ACDS V10.0 - Detailed Description of B/cb

ACDS V10.0 - Wed Jan 29 13:48:49 CET 2025

| # Detailed Description of B/cb : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2004) |

Note : this is the description file of the original catalog. This HTML page corresponds well to the original description, but some minor changes in the format may have been introduced in the FITS output files in order to allow for arithmetic operations on quantities such as coordinates and times. h:m:s and d:m:s units are normally converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the units; the value given in the HTML files supersedes the value indicated in the ReadMe file for this catalogue.

    B/cb        Cataclysmic Binaries, LMXBs, and related objects   (Ritter+, 2004)
    ================================================================================
    Catalogue of cataclysmic binaries, low-mass X-ray binaries
    and related objects (7th Edition, Release 7.24, February 2017)
         Ritter H., Kolb U.
        <Astron. Astrophys. 404, 301 (2003)>
        =2003A&A...404..301R
    ================================================================================
    ADC_Keywords: Binaries, cataclysmic ; Binaries, X-ray ; Novae

    Keywords: catalogues - stars: novae, cataclysmic variables -
              stars: binaries: close

    Description (Release 7.24; final edition):
        Cataclysmic Binaries are semi-detached binaries consisting of a white
        dwarf or a white dwarf precursor primary and a low-mass secondary
        which is filling its critical Roche lobe. The secondary is not
        necessarily unevolved, it may even be a highly evolved star as for
        example in the case of the AM CVn-type stars.

        Low-Mass X-Ray Binaries are semi-detached binaries consisting of
        either a neutron star or a black hole primary, and a low-mass
        secondary which is filling its critical Roche lobe.

        Related Objects are detached binaries consisting of either a white
        dwarf or a white dwarf precursor primary and of a low-mass secondary.
        The secondary may also be a highly evolved star.

        The catalogue lists coordinates, apparent magnitudes, orbital
        parameters, and stellar parameters of the components and other
        characteristic properties of 1429 cataclysmic binaries, 108 low-mass
        X-ray binaries and 619 related objects with known or suspected
        orbital periods together with a comprehensive selection of the
        relevant recent literature. In addition the catalogue contains a list
        of references to published finding charts for 2035 of the 2156
        objects, and a cross-reference list of alias object designations.
        Literature published before 1 July 2016 has, as far as possible, been
        taken into account.

        Old editions include catalogue V/59 (5th edition),
        V/99 (6th edition) and V/113 (7th edition);
        the successive versions of the 7th edition are available
        in dedicated subdirectories (v7.00 to v7.20)

    File Summary:

           FileName      Lrecl  Records   Explanations

    ×                   80        .   This file
    × ReadMe            80        .   This file
    × cbdata.dat       229     1429   Catalogue of Cataclysmic Binaries
    × lmxbdata.dat     227      108   Catalogue of Low-Mass X-Ray Binaries
    × pcbdata.dat      218      619   Catalogue of Related Objects
    × findrefs.dat     459     4858   References for finding charts
    × cbrefs.dat       459     2953   References for cbdata.dat
    × lmxbrefs.dat     459      310   References for lmxbdata.dat
    × pcbrefs.dat      459     1201   References for pcbdata.dat
    × whoswho.txt       72    13746  *Names of objects, and references of designations
    × whoswho1.dat     276    12814  *Alternative names in lexigraphical order
    × whoswho2.dat     285     7307  *Provisional and Common designations
    × whoswho5.dat      72     1543  *References to the catalogue acronyms

    Note on whoswho.txt:
        contains the 3 parts whoswho1.dat to whoswho5.dat (without the bibcodes)
    Note on whoswho1.dat, whoswho2.dat, whoswho5.dat:
        formatted files corresponding to whoswho.txt

    See also:
      http://www.MPA-Garching.MPG.DE/RKcat/ : Catalog Home page  or
      http://physics.open.ac.uk/RKcat/      : Catalog Home page

    Byte-by-byte Description of file:  cbdata.dat

       Bytes Format Units   Label     Explanations

       1- 12  A12   ---     Name      Object name (G1)
          14  A1    ---     whoswho   [*] * indicating that further alternative
                                       designations are in the whoswho1.dat file
      16- 27  A12   ---     AltName   A frequently used alternative name
      30- 31  I2    h       RAh       Right Ascension J2000 (hours) (14)
      33- 34  I2    min     RAm       Right Ascension J2000 (minutes)
      36- 39  F4.1  s       RAs       ? Right Ascension J2000 (seconds)
          41  A1    ---     DE-       Declination J2000 (sign) (14)
      42- 43  I2    deg     DEd       Declination J2000 (degrees) (14)
      45- 46  I2    arcmin  DEm       ? Declination J2000 (minutes of arc)
      48- 49  I2    arcsec  DEs       ? Declination J2000 (seconds of arc)
          51  A1    arcsec  epos      [0-9] Accuracy of position (G3)
      53- 54  A2    ---     Type1     Object type (3)
          55  A1    ---     u_Type1   [?:] Uncertainty flag for object type
      57- 58  A2    ---     Type2     Object type (3)
          59  A1    ---     u_Type2   [?:] Uncertainty flag for object type
      61- 62  A2    ---     Type3     Object type (3)
          63  A1    ---     u_Type3   [?:] Uncertainty flag for Object type
      65- 66  A2    ---     Type4     Object type (3)
          67  A1    ---     u_Type4   [?] Uncertainty flag for Object type
          69  A1    ---     l_mag1    [><] Limit flag for magnitude mag1
      70- 73  F4.1  mag     mag1      ? Apparent V (or B, b, F, g, I, J, j, K, p, R,
                                         r, v, w = "white light") magnitude at
                                         maximum brightness (4)
          74  A1    ---     f_mag1    [:?BbFgIJjKpRrvw] Uncertainty flag or band
                                        for magnitude mag1
          76  A1    ---     l_mag2    [><] Limit flag for magnitude mag2
      77- 80  F4.1  mag     mag2      ? Apparent V (or B, b, g, I, K, p, R, r,
                                         w = "white light" magnitude) magnitude at
                                         minimum brightness, (5)
          81  A1    ---     f_mag2    [:?BbgIKpRrw] Uncertainty flag/band for mag2
          84  A1    ---     l_mag3    [><] Limit flag for magnitude mag3
      85- 88  F4.1  mag     mag3      ? Apparent V (or B, b, g, I, p, R, r,
                                         w = "white light" magnitude) magnitude at
                                         maximum brightness (6)
          89  A1    ---     f_mag3    [:?BbgIpRrw] Uncertainty flag/band for mag3
          91  A1    ---     l_mag4    [><] Limit flag for magnitude mag4
      92- 95  F4.1  mag     mag4      ? Apparent V (or B, g, I, p, R, r, U,
                                         w = "white light "magnitude) magnitude at
                                         maximum brightness (7)
          96  A1    ---     f_mag4    [:?BgIpRrUw] Uncertainty flag/band for mag4
      98-102  A5    d       T1        Time interval between two subsequent
                                       outbursts (8)
     104-108  A5    d       T2        Time interval between two subsequent
                                       outbursts (8)
     110-117  F8.6  d       Orb.Per   ? Orbital period (in days)
         118  A1    ---    u_Orb.Per  [:*] Uncertainty flag for Orb.Per (9)
     120-129  F10.6 d       2.Per   ? Second period (10)
         130  A1    ---    u2._Per  [:*] Uncertainty flag for 2.Per
     131-140  F10.3 s       3.Per   ? Additional period in the system (11)
         141  A1    ---    f3._Per  [:T] Flag for 3.Per. (12)
     144-151  F8.3  s       4.Per   ? Additional period in the system (13)
         152  A1    ---    u4._Per  [:] Uncertainty flag for 4.Per
         154  A1    ---     EB        [D21?] Flag indicating the occurrence of
                                       eclipses (G4)
         155  A1    ---     u_EB      [?:] Uncertainty flag for EB
         157  I1    ---     SB        [1,2]? Flag specifying the type of
                                       spectroscopic binary (G5)
         158  A1    ---     u_SB      [?] Uncertainty flag for SB
     160-166  A7    ---     SpType2   Spectral type of the secondary (G6)
     168-174  A7    ---     SpType1   Spectral type of the primary (G6)
         177  A1    ---     f_M1/M2   [><] Limit flag for M1/M2
     178-182  F5.2  ---     M1/M2     ? Mass ratio M1/M2
         183  A1    ---     u_M1/M2   [:] Uncertainty flag for M1/M2
     186-189  F4.2  ---     e_M1/M2   ? Error of M1/M2
         191  A1    ---     l_Incl    [><~] Limit flag for the orbital inclination
     192-195  F4.1  deg     Incl      ? Orbital inclination
         196  A1    ---     u_Incl    [:] Uncertainty flag for the inclination
     198-201  F4.1  deg     e_Incl    ? Error of orbital inclination
         203  A1    ---     l_M1      [><] Limit flag for primary mass M1
     204-208  F5.3  Msun    M1        ? Primary mass M1 (in solar masses)
         209  A1    ---     u_M1      [:] Uncertainty flag for primary mass M1
     211-215  F5.3  Msun    e_M1      ? Error of primary mass M1 (in solar masses)
         217  A1    ---     l_M2      [><] Limit flag for secondary mass M2
     218-222  F5.3  Msun    M2        ? Secondary mass M2 (in solar masses)
         223  A1    ---     u_M2      [:] Uncertainty flag for secondary mass M2
     225-229  F5.3  Msun    e_M2      ? Error of secondary mass M2 (in solar masses)

    Note (3): Object type coarsely characterised using the following abbreviations:
        AC = AM CVn star, spectrum devoid of hydrogen lines, subtype of NL
        AM = polar = AM Her system, subtype of NL, contains a synchronously
              or nearly synchronously rotating, magnetized white dwarf
        AS = subtype of AM, with a slowly asynchronously rotating, magnetized
              white dwarf
        BD = secondary star is a brown dwarf
        CP = coherent pulsator, contains a coherently pulsating white dwarf
        CV = cataclysmic variable of unspecified subtype
        DA = non-magnetic direct accretor
        DN = dwarf nova
        DQ = DQ Her star, contains a non-synchronously rotating, magnetized
              white dwarf; usually not seen in X-rays
        EG = extragalactic source
        ER = ER UMa star = SU UMa star with an extremely short supercycle
        GC = source in a globular cluster
        IP = intermediate polar, shows coherent X-ray period from a non-
              synchronously spinning, magnetized white dwarf; usually a strong
              X-ray source
        LA = low accretion rate polar (LARP), i.e. a somewhat detached
              magnetic CV/pre-CV
        LI = low-accretion rate intermediate polar (LARIP), i.e. a somewhat
              detached magnetic CV/pre-CV
        N  = classical nova
        Na = fast nova (decline from max. by 3 mag. in less than about 100 days)
        Nb = slow nova (decline from max. by 3 mag. in more than about 100 days)
        Nc = extremely slow nova (typical time scale of the decline from
              maximum: decades)
        NL = nova-like variable
        Nr = recurrent nova
        NS = system showing negative (nodal) superhumps
        PW = precessing white dwarf
        SH = non-SU UMa star showing either permanent or transient positive
              (apsidal) superhumps
        SS = supersoft X-ray source; CV with stationary hydrogen burning on
              the white dwarf
        SU = SU UMa star, subtype of DN
        SW = SW Sex star, subtype of NL
        UG = dwarf nova of either U Gem or SS Cyg subtype
        UL = ultra-luminous X-ray source
        UX = UX UMa star, subtype of NL
        VY = VY Scl star (anti dwarf nova), subtype of NL
        WZ = WZ Sge star = SU UMa star with an extremely long supercycle
        ZC = Z Cam star, subtype of DN
        ZZ = white dwarf shows ZZ Ceti-type pulsations
    Note (4): Apparent magnitude at maximum brightness of:
        novae (N, Na, Nb, Nc, Nr) in minimum
        DN    (UG, ZC, SU)        in minimum
        NL    (UX, AC)            in normal state
        NL    (DQ, IP, AM, VY)    in high state
        SS                        in high state
    Note (5): in case of eclipses magnitude at mideclipse, of:
        novae (N, Na, Nb, Nc, Nr) in minimum
        DN    (UG, ZC, SU)        in minimum
        NL    (UX, AC)            in normal state
        NL    (DQ, IP, AM, VY)    in high state
        SS                        in high state
    Note (6): Apparent magnitude at maximum brightness of:
        novae (N, Na, Nb, Nc, Nr) in outburst
        DN    (UG, ZC)            in outburst
        DN    (SU)                in normal outburst
        DN    (WZ)                in echo outburst
        NL    (AM, VY)            in low state
        NL    (DQ, IP)            in flaring state
        SS                        in low state
      * brightness of
        NL    (DQ, IP)            in low state
    Note (7): Apparent magnitude at maximum brightness of:
        novae (N, Na, Nb, Nc, Nr) in DN outbursts
        ZC                        in standstill
        SU                        in superoutburst
        WZ                        in superoutburst
        NL    (DQ, IP)            in flaring state or outburst
     *  at minimum brightness of
        NL    (AM, VY)            in low state
        SS                        in low state
    Note (8): time interval between outbursts is defined:
        * for dwarf novae of subtype UG or ZC: the typical time interval
            between two subsequent outbursts
        * for dwarf novae of subtype SU and WZ:
            T1 is the typical time interval between two subsequent normal outbursts
            T2 is the typical time interval between two subsequent superoutbursts
    Note (9): the * indicates, in case of object type SU or SH that the orbital
      period has been estimated from the known superhump period using the empirical
      relation given by Stolz & Schoembs (1984A&A...132..187S).
    Note (10): The second period, in case of object type:
      DQ or IP: photometric period if it is different from the spectroscopic one
      AM: polarization period = spin period of the white dwarf, if it is different
           from the presumed orbital period (subtype AS)
      SU: superhump period, wherever possible, at the beginning of a super-outburst
      SH: photometric period, superhump period of either permanent or transient
           superhumps if 2.Per > Orb.Per
      NS: photometric period, period of either permanent or transient negative
           superhumps if 2.Per. < Orb.Per
    Note (11): Additional period in the system, in case of object type:
      CP: period of coherent pulsation, (transient if f3.Per = T)
      DQ: spin period of the white dwarf
      IP: spin period of the white dwarf, usually detected in X-Rays
      SW: probably the spin period of the white dwarf
    Note (12): Flag T indicating transient pulsations

    Note (13): Additional period in the system, in case of object type:
      CP: second period of coherent pulsation
      DQ: additional period, presumably due to reprocessed X-Rays
      IP: additional period, usually seen in the optical and presumably due to
           reprocessed X-Rays
    Note (14): The position for CAL 87 has been corrected by CDS
        (old position (J2000): 05 46 48.3 -71 09 24), according to SIMBAD
        (from reference 2011AcA....61..103G) and the XMM image corresponding
        to XMM Obsno 0153250101 in the B/xmm catalog:
        http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/xmm&Obsno=0153250101

    Byte-by-byte Description of file:  lmxbdata.dat

       Bytes Format Units   Label     Explanations

       1- 12  A12   ---     Name      Object name (G1)
          14  A1    ---     whoswho   [*] * indicating that further alternative
                                       designations are in the whoswho1.dat file
      16- 27  A12   ---     AltName   A frequently used alternative name
      30- 31  I2    h       RAh       Right Ascension J2000 (hours)
      33- 34  I2    min     RAm       Right Ascension J2000 (minutes)
      36- 39  F4.1  s       RAs       Right Ascension J2000 (seconds)
          41  A1    ---     DE-       Declination J2000 (sign)
      42- 43  I2    deg     DEd       Declination J2000 (degrees)
      45- 46  I2    arcmin  DEm       Declination J2000 (minutes of arc)
      48- 49  I2    arcsec  DEs       Declination J2000 (seconds of arc)
          51  A1    arcsec  epos      [1-9] Accuracy of position (seconds of arc)
      53- 54  A2    ---     Type1     Object type (3)
          55  A1    ---     u_Type1   [?] Uncertainty flag for object type
      57- 58  A2    ---     Type2     Object type (3)
          59  A1    ---     u_Type2   [?] Uncertainty flag for object type
      61- 62  A2    ---     Type3     Object type (3)
          63  A1    ---     u_Type3   [?] Uncertainty flag for Object type
      65- 66  A2    ---     Type4     Object type (3)
          67  A1    ---     u_Type4   [?] Uncertainty flag for Object type
          69  A1    ---     l_mag1    [><] Limit flag for magnitude mag1
      70- 73  F4.1  mag     mag1      ? Apparent V (or B, g, I, i, J, K, R, r, U)
                                         magnitude at maximum brightness, in case of
                                         XT in quiescence
          74  A1    ---     f_mag1    [:?BgIiJKRrU] Uncertainty flag/band for mag1
          76  A1    ---     l_mag2    [><] Limit flag for magnitude mag2
      77- 80  F4.1  mag     mag2      ? Apparent V (or B, J, K, R, r, U) magnitude
                                       at minimum brightness, in case of eclipses
                                       magnitude at mideclipse, of XT in quiescence
          81  A1    ---     f_mag2    [:?BJKRrUg] Uncertainty flag [:, ?],
          83  A1    ---     l_mag3    [><] Limit flag for magnitude mag3
      84- 87  F4.1  mag     mag3      ? Apparent V (or B, g, I, R) magnitude
                                         at maximum brightness, in case of
                                         XT in outburst
          88  A1    ---     f_mag3    [:?BgIR] Uncertainty flag/band for mag3
          90  A1    ---     l_mag4    [><] Limit flag for magnitude mag4
      91- 94  F4.1  mag     mag4      ? Apparent V (or R) magnitude at minimum
                                         brightness, in case of XT in outburst
          95  A1    ---     f_mag4    [:?R] Uncertainty flag/band for mag4
          96  A1    ---    l_LX/Lopt  Limit flag on LX/Lopt
      97-103  F7.1  ---     LX/Lopt   ? Ratio of X-ray to optical luminosity
     106-108  I3    d       T1        ? Typical time interval between two subsequent
                                         X-ray active states in case of subtype XT,
     110-118  F9.6  d       Orb.Per   ? Orbital period
         119  A1    ---    u_Orb.Per  [:*] Uncertainty flag for Orb.Per (6)
     120-128  F9.6  d       2.Per   ? Second period (7)
         129  A1    ---    u2._Per  [:] Uncertainty flag for 2.Per
     132-139  F8.6  s       3.Per   ? Additional period in the system (8)
         140  A1    ---    u3._Per  [:] Uncertainty flag for 3.Per
     141-148  F8.1  s       4.Per   ? Aditional period in the system,
                                       in case of object type XP: optical period
         149  A1    ---    u4._Per  [:] Uncertainty flag or 4.Per
         152  A1    ---     EB        [12D] Flag indicating the occurrence of
                                        eclipses (G4)
         153  A1    ---     u_EB      [?] uncertainty flag for EB
         155  I1    ---     SB        [1,2]? Flag specifying the type of
                                       spectroscopic binary (G5)
         156  A1    ---     u_SB      Uncertainty flag [?] for SB
     158-164  A7    ---     SpType2   Spectral type of the secondary (G6)
     165-171  A7    ---     SpType1   Spectral type of the primary (G6)
         175  A1    ---     f_M1/M2   [><] Limit flag for M1/M2
     176-180  F5.2  ---     M1/M2     ? Mass ratio M1/M2
         181  A1    ---     u_M1/M2   [:] Uncertainty flag for M1/M2
     182-186  F5.2  ---     e_M1/M2   ? Error of M1/M2
         189  A1    ---     l_Incl    [><] Limit flag for the orbital inclination
     190-193  F4.1  deg     Incl      ? Orbital inclination (in degrees)
         194  A1    ---     u_Incl    [:] Uncertainty flag for the inclination
     196-199  F4.1  deg     e_Incl    ? Error of orbital inclination (in degrees)
         201  A1    ---     l_M1      [><] Limit flag for primary mass M1
     202-206  F5.2  Msun    M1        ? Primary mass M1 (in solar masses)
         207  A1    ---     u_M1      [:] Uncertainty flag for primary mass M1
     210-214  F5.3  Msun    e_M1      ? Error of primary mass M1 (in solar masses)
         215  A1    ---     l_M2      [><] Limit flag for secondary mass M2
     216-221  F6.3  Msun    M2        ? Secondary mass M2 (in solar masses)
         222  A1    ---     u_M2      [:] Uncertainty flag for secondary mass M2
     224-227  F4.2  Msun    e_M2      ? Error of secondary mass M2 (in solar masses)

    Note (3): Object type coarsely characterised using the following abbreviations:
        AS = atoll source, subtype of the LMXBs
        BH = black hole candidate, subtype of the LMXBs
        BO = X-ray burster with coherent burst oscillations at the neutron
                   star spin period
        DC = source with an accretion disc corona, subtype of the LMXBs
        EG = extragalactic source
        GC = source in a globular cluster
        MQ = microquasar, source of relativistic jets
        NS = system showing negative (nodal) superhumps
        QN = quiescent neutron star LMXB
        RP = primary is also seen as a radio pulsar
        SH = system showing either permanent or transient superhumps
        SS = supersoft X-ray source
        UL = ultra-luminous X-ray source
        XB = X-ray burst source
        XP = X-ray pulsar
        XT = transient X-ray source
        ZS = Z-source, subtype of the LMXBs
    Note (6): the * indicates, in case of object type SH, that the orbital period
       has been estimated from the known superhump period using the empirical
       relation given by Stolz & Schoembs (1984A&A...132..187S)
    Note (7): Second period in case of object type:
       SH: photometric period, presumably superhump period of either permanent or
            transient superhumps
    Note (8): Additional period in the system, in case of object type
      BO: period of burst oscillations = rotation period of the neutron star
      XP: rotation period of the pulsar

    Byte-by-byte Description of file:  pcbdata.dat

       Bytes Format Units   Label     Explanations

       1- 12  A12   ---     Name      Object name (G1)
          14  A1    ---     whoswho   [*] indicating that further alternative
                                       designations are in the whoswho.dat file
      16- 27  A12   ---     AltName   A frequently used alternative name
      30- 31  I2    h       RAh       Right Ascension J2000 (hours)
      33- 34  I2    min     RAm       Right Ascension J2000 (minutes)
      36- 39  F4.1  s       RAs       Right Ascension J2000 (seconds)
          41  A1    ---     DE-       Declination J2000 (sign)
      42- 43  I2    deg     DEd       Declination J2000 (degrees)
      45- 46  I2    arcmin  DEm       Declination J2000 (minutes of arc)
      48- 49  I2    arcsec  DEs       Declination J2000 (seconds of arc)
          51  A1    arcsec  epos      [1-9P] Accuracy of position (G3)
      53- 54  A2    ---     Type1     Object type (3)
          55  A1    ---     u_Type1   [?] Uncertainty flag for object type
      57- 58  A2    ---     Type2     Object type (3)
          59  A1    ---     u_Type2   [?] Uncertainty flag for object type
      61- 62  A2    ---     Type3     Object type (3)
          63  A1    ---     u_Type3   [?] Uncertainty flag for Object type
      65- 66  A2    ---     Type4     Object type (3)
          67  A1    ---     u_Type4   [?] Uncertainty flag for Object type
          69  A1    ---     l_mag1    [><] Limit flag for magnitude mag1
      70- 73  F4.1  mag     mag1      ? Apparent V (or B, g, I, i, R, r) magnitude
                                         at maximum brightness outside eclipse
          74  A1    ---     f_mag1    [:?BgIiRr] Uncertainty flag/band for mag1
          76  A1    ---     l_mag2    [><] Limit flag for magnitude mag2
      77- 80  F4.1  mag     mag2      ? Apparent V (or B, g, I, i, R, r) magnitude
                                         at minimum brightness, in case of eclipses
                                         magnitude at mideclipse
          81  A1    ---     f_mag2    [:?BgIiRr] Uncertainty flag/band for mag2
      82- 90  F9.6  d       Orb.Per   Orbital period
          91  A1    ---    u_Orb.Per  [:] Uncertainty flag for Orb.Per
      92-102  F11.5 s       2.Per   ? Spin period of the white dwarf
                                         (or neutron star)
         103  A1    ---    u2._Per  [:] Uncertainty flag for 2.Per
         104  A1    ---     EB        [12D] Flag indicating the occurrence of
                                       eclipses (G4)
         105  A1    ---     u_EB      [?] Uncertainty flag for EB
         107  I1    ---     SB        [1,2]? Flag specifying the type of
                                       spectroscopic binary (G5)
         108  A1    ---     u_SB      [?] Uncertainty flag for SB
     110-116  A7    ---     SpType2   Spectral type of the secondary (G6)
     118-124  A7    ---     SpType1   Spectral type of the primary (G6)
         126  A1    ---     l_E       [><] Limit flag for the orbital eccentricity
     127-130  F4.2  ---     E         ? Orbital eccentricity
         131  A1    ---     u_E       [:] Uncertainty flag for E
     133-136  F4.2  ---     e_E       ? Error of orbital eccentricity
         137  A1    ---     f_M1/M2   [><] Limit flag for M1/M2
     138-143  F6.3  ---     M1/M2     ? Mass ratio M1/M2
         144  A1    ---     u_M1/M2   [:] Uncertainty flag for M1/M2
     145-149  F5.2  ---     e_M1/M2   ? Error of M1/M2
         151  A1    ---     l_Incl    [><~] Limit flag for the orbital inclination
     152-155  F4.1  deg     Incl      ? Orbital inclination (in degrees)
         156  A1    ---     u_Incl    [:] Uncertainty flag for the inclination
     158-161  F4.1  deg     e_Incl    ? Error of orbital inclination (in degrees)
         163  A1    ---     l_M1      [><] Limit flag for primary mass M1
     164-168  F5.3  Msun    M1        ? Primary mass M1 (in solar masses)
         169  A1    ---     u_M1      [:] Uncertainty flag for primary mass M1
     171-175  F5.3  Msun    e_M1      ? Error of primary mass M1 (in solar masses)
         177  A1    ---     l_R1      [><] Limit flag for primary radius R1
     178-182  F5.3  Rsun    R1        ? Primary radius (in solar radii)
         183  A1    ---     u_R1      [:] Uncertainty flag for primary radius R1
     185-189  F5.3  Rsun    e_R1      ? Error of primary radius R1 (in solar radii)
         191  A1    ---     l_M2      [><] Limit flag for secondary mass M2
     192-196  F5.3  Msun    M2        ? Secondary mass M2 (in solar masses)
         197  A1    ---     u_M2      [:] Uncertainty flag for secondary mass M2
     199-203  F5.3  Msun    e_M2      ? Error of secondary mass M2 (in solar masses)
         205  A1    ---     l_R2      [><] Limit flag for secondary radius R2
     206-210  F5.3  Rsun    R2        ? Secondary radius R2 (in solar radii)
         212  A1    ---     u_R2      [:] Uncertainty flag for secondary radius R2
     214-218  F5.3  Rsun    e_R2      ? Error of secondary radius (in solar radii

    Note (3): Object type coarsely characterised using the following abbreviations:
         BD = secondary star is a brown dwarf
         CP = coherent pulsator, contains a coherently pulsating white dwarf or
               subdwarf
         DD = system consists of two degenerate components
         DS = detached system
         EC = contains a pulsating sdB star of the V361 Hya type (EC 14026-2647
               type) with short-period pulsations
         EG = extragalactic source
         EL = EL CVn star = detached, eclipsing, possibly post-common envelope/
               pre-CV binary consisting of a low-mass pre-He-WD and an A-type
               companion
         GC = source in a globular cluster
         GP = contains a sdB-star of V1093 Her type with long-period g-mode
               pulsations
         GW = contains a pulsating white dwarf of the GW Vir = PG 1159-035 type
         PN = central star of a planetary nebula
         RS = system shows RS CVn-like chromospheric activity
         SC = sub-stellar companion
         ZZ = white dwarf shows ZZ Ceti-type pulsations

    Byte-by-byte Description of file:  *refs.dat

       Bytes Format Units   Label     Explanations

       1- 12  A12   ---     Name      Object name
      14- 32  A19   ---     BibCode   BibCode
      34-459  A426  ---     Text      Text of reference

    Byte-by-byte Description of file:  whoswho1.dat

       Bytes Format Units   Label    Explanations

           1  A1    ---     B        [BJ] B when the name is based on B1950 position
                                      or J when the name is based on J2000 position
       2- 26  A25   ---     Name     Object name
          28  A1    ---     ---      [=]
      30-276  A247  ---     AltName  Other name, or comment (1)

    Note (1): Catalogue designations involving the equatorial coordinates
              are given in the following format:
       HHMM+DDMM (catalogue acronyms) if the position is given in B1950
                  coordinates -- a 'B' is then present in byte 1.
      JHHMM+DDMM (catalogue acronyms) if the position is given in J2000
                  coordinates.
             Here HHMM is the truncated right ascension in hours (HH) and
                  minutes (MM), DDMM the truncated declination in  degrees (DD)
                  and arcminutes (MM), and + the sign of the declination.

    Byte-by-byte Description of file:  whoswho2.dat

       Bytes Format Units   Label    Explanations

           1  A1    ---     B        [BJ] B when the name is based on B1950 position
                                      or J when the name is based on J2000 position
       2- 64  A63   ---     cName    Common or Provisional designation (G2)
      66- 67  A2    ---     ---      [->]
      69-285  A217  ---     Name     Usual name, eventually with comments

    Byte-by-byte Description of file:  whoswho5.dat

       Bytes Format Units   Label     Explanations

       1- 10  A10   ---     Abbr      Catalogue abbreviation
      14- 72  A59   ---     Text      Text of References

    Global Notes:

    Note (G1): Wherever possible, the designation of the object given in the
        General Catalogue of Variable Stars (Cat. II/214) is used here.
    Note (G2): The acronyms used in lists are detailed in the last part of
        the file "whoswho.txt"
    Note (G3): The number indicates the accuracy of position in seconds of arc.
         If the positional error is larger than 9arcsec, or unknown, this field
         is left blank. The letter [P] indicates an object with a large proper
         motion.
    Note (G4): The EB flag means:
        (blank) = no eclipses observed.
        1 = 1 eclipse per orbital revolution observed.
        2 = 2 eclipses per orbital revolution observed.
        D = periodic eclipse-like dips observed.
    Note (G5): The SB flag means:
        1 = single-line spectroscopic binary
        2 = double-line spectroscopic binary
    Note (G6): Spectral types are given in the following format:
        [Spectral class/Luminosity class], where the usual roman numerals for
        the latter are replaced by the corresponding arabic numerals, i.e.
        I = 1, II = 2, III = 3, IV = 4, V = 5, VI = 6.

    History (and statistics):
      * 16-Apr-2003: 7th Edition  (472 CB +  71 LMXB + 113 PCB)
      * 28-Aug-2003: 7.1 Edition  (499 CB +  74 LMXB + 114 PCB)
      * 12-Mar-2004: 7.2 Edition  (522 CB +  75 LMXB + 117 PCB)
      * 01-Sep-2004: 7.3 Edition  (535 CB +  78 LMXB + 131 PCB)
      * 24-Mar-2005: 7.4 Edition  (572 CB +  80 LMXB + 142 PCB)
      * 25-Jul-2005: 7.5 Edition  (599 CB +  81 LMXB + 147 PCB)
      * 01-Feb-2006: 7.6 Edition  (623 CB +  83 LMXB + 162 PCB)
      * 29-May-2006: 7.6rev1 Edition (no new object)
      * 07-Dec-2006: 7.7 Edition  (647 CB +  85 LMXB + 169 PCB)
      * 17-Aug-2007: 7.8 Edition  (675 CB +  86 LMXB + 174 PCB)
      * 18-Mar-2008: 7.9 Edition  (700 CB +  90 LMXB + 186 PCB)
      * 26-Jul-2008: 7.10 Edition (731 CB +  90 LMXB + 190 PCB)
      * 06-Apr-2009: 7.11 Edition (769 CB +  90 LMXB + 208 PCB)
      * 18-Sep-2009: 7.12 Edition (815 CB +  91 LMXB + 227 PCB)
      * 20-Mar-2010: 7.13 Edition (835 CB +  92 LMXB + 235 PCB)
      * 05-Nov-2010: 7.14 Edition (849 CB +  95 LMXB + 266 PCB)
      * 23-Mar-2011: 7.15 Edition (880 CB +  98 LMXB + 319 PCB)
      * 29-Sep-2011: 7.16 Edition (926 CB +  98 LMXB + 359 PCB)
      * 24-May-2012: 7.17 Edition (957 CB + 100 LMXB + 401 PCB)
      * 19-Jun-2012: 7.17rev1 (typos fixed in cbdata for J0038+7921 and NY Her)
      * 01-Aug-2012: 7.18 Edition (1005 CB + 101 LMXB + 427 PCB)
      * 31-Mar-2013: 7.19 Edition (1055 CB + 102 LMXB + 463 PCB)
      * 14-Jul-2013: 7.20 Edition (1094 CB + 104 LMXB + 483 PCB)
      * 20-Apr-2014: 7.21 Edition (1166 CB + 105 LMXB + 500 PCB)
      * 10-Jan-2016: 7.23 Edition (1361 CB + 107 LMXB + 604 PCB)
      * 09-Feb-2017: 7.24 Edition (1429 CB + 108 LMXB + 619 PCB)
      * 14-Apr-2020: Coordinates of CAL 87 updated in cbdata.dat

    References:
      Ritter H., 1984A&AS...57..385R (3rd edition)
      Ritter H., 1987A&AS...70..335R (4th edition)
      Ritter H., 1990A&AS...85.1179R (5th edition) (Catalogue: V/59)
      Ritter H., Kolb U., 1995, in "X-ray Binaries", Lewin W.H.G,
        van Paradijs J., van den Heuvel E.P. (eds),
        Cambridge Univ. Press, p. 578 (Cat. V/82)
    ================================================================================
    (End) H. Ritter, U. Kolb [MPA Garching], Francois Ochsenbein [CDS]   29-Sep-2011