ACDS V10.0 -EPIC field of view cross-correlation summary

creation date : Thu Apr 25 16:31:59 CEST 2019

XMM logo

Principal Investigator : Dr Robert Warwick
XMM Target name : XGPS_008
Observation number : 0135740801
Center coordinates : 18 29 50.810 -11 05 41.60
Observation start : 2001-03-24T21:35:57
Observation end : 2001-03-24T22:59:15
Exposure PN (s) : 4999.5
Exposure MOS1 (s) : 7272.3
Exposure MOS2 (s) : 7220.3

Catalogue configuration : CAT_15/31/2019_223_1
Cross-correlation made using corrected EPIC source coordinates
Astrometric PSF displacement applied
A systematic error taken from the SYSERRCC column has been added to EPIC X-ray positions


This page lists all archival catalogue entries present in the EPIC field of view independently of their correlation with EPIC sources. Only a subset of catalogues are used. Entries are sorted by increasing right ascension. Links in SRC_NUM and chart columns give access to EPIC source summary and finding charts when the catalogue entry also correlates with an EPIC source. Links in CAT_NAME column point to catalogue descriptions. Links in CAT_ENTRY column point to the full catalogue extraction. For Simbad and Ned entries the "?" in query column allows to query in real time these databases for this source.

For each catalogue a representative measurement (CAT_MEAS) has been selected. Its value is printed in CAT_VAL column. CAT_NUM is an absolute archival entry number which can be used to locate archival entries on the catalogue plot product for instance.
SIMBAD query of EPIC FOV
NED query of EPIC FOV

SRC_NUM   Chart CAT_NAME CAT_ENTRY                     QUERY      RA           DEC      ERR  CAT_MEAS CAT_VAL CAT_NUM
                                                                H:M:S (J2000) D:M:S     (")  selected 
                                                                                       1 sig  measure 
                SIMBAD   2MASS J18285207-1057576         ?   18 28 52.078 -10 57 57.62  0.07 nref           2       1
                SIMBAD   SSTGLMC G020.4385-00.1426       ?   18 28 52.600 -11 10 00.00  1.00 nref           1       2
                SIMBAD   2MASS J18285264-1101229         ?   18 28 52.653 -11 01 22.91  0.00 nref           2       3
                SIMBAD   SSTGLMC G020.5371-00.0918       ?   18 28 52.680 -11 03 19.80  0.30 nref           1       4
                SIMBAD   AGAL G020.437-00.144            ?   18 28 53.000 -11 10 06.00  3.00 nref           2       5
                SIMBAD   BGPS G020.437-00.145            ?   18 28 53.030 -11 10 06.02  0.01 nref           8       6
                SIMBAD   AGAL G020.436-00.151            ?   18 28 54.000 -11 10 24.00  3.00 nref           2       7
                SIMBAD   XGPS-I J182855-111148           ?   18 28 55.740 -11 11 48.70  0.10 nref           1       8
                SIMBAD   2MASS J18285844-1056069         ?   18 28 58.454 -10 56 06.81  0.00 nref           2       9
                SIMBAD   XGPS-I J182900-111001           ?   18 29 00.380 -11 10 01.90  0.10 nref           1      10
                SIMBAD   SDC G20.587-0.100               ?   18 29 00.430 -11 00 55.30  0.10 nref           2      11
                SIMBAD   GPSR5 20.378-0.214              ?   18 29 01.190 -11 15 12.80  0.10 nref           1      12
                SIMBAD   XGPS-I J182903-110230           ?   18 29 03.020 -11 02 30.40  0.10 nref           1      13
                SIMBAD   [SPK2012] MWP1G020555-001335    ?   18 29 03.900 -11 03 34.00  1.00 nref           1      14
                SIMBAD   2MASS J18290488-1114281         ?   18 29 04.893 -11 14 28.11  0.00 nref           3      15
                SIMBAD   BGPS G020.558-00.137            ?   18 29 04.920 -11 03 30.04  0.01 nref           4      16
                SIMBAD   BGPS G020.494-00.173            ?   18 29 05.455 -11 07 54.26  0.01 nref           3      17
                SIMBAD   GPSR5 20.593-0.130              ?   18 29 07.300 -11 01 25.00  0.80 nref           3      18
                SIMBAD   [GPD88] 020.594-0.130           ?   18 29 07.300 -11 01 24.00  1.00 nref           1      19
                SIMBAD   IRAS 18263-1109                 ?   18 29 08.700 -11 07 01.00 47.00 nref           0      20
                SIMBAD   BGPS G020.538-00.167            ?   18 29 09.149 -11 05 23.94  0.01 nref           7      21
                SIMBAD   SDC G20.699-0.084               ?   18 29 09.520 -10 54 30.10  0.10 nref           2      22
                SIMBAD   XGPS-I J182909-105644           ?   18 29 09.950 -10 56 44.30  0.10 nref           1      23
                SIMBAD   AGAL G020.701-00.084            ?   18 29 10.000 -10 54 24.00  3.00 nref           2      24
                SIMBAD   GPSR5 20.722-0.075              ?   18 29 10.060 -10 53 03.70  0.10 nref           2      25
                SIMBAD   [ERG2015] 3491                  ?   18 29 10.400 -10 53 27.70  0.10 nref           1      26
                SIMBAD   GAL 020.554-00.169              ?   18 29 10.680 -11 04 12.00  0.10 nref           1      27
                SIMBAD   BGPS G020.712-00.083            ?   18 29 10.698 -10 53 48.78  0.01 nref           3      28
                SIMBAD   SDC G20.712-0.083               ?   18 29 10.880 -10 53 46.10  0.10 nref           2      29
                SIMBAD   [SCR92]  20.55-0.17             ?   18 29 11.500 -11 04 37.00  1.00 nref           1      30
                SIMBAD   XGPS-I J182911-105544           ?   18 29 11.610 -10 55 44.90  0.10 nref           2      31
                SIMBAD   [SPK2012] MWP1G020529-001853    ?   18 29 12.000 -11 06 22.00  1.00 nref           2      32
                SIMBAD   [R2003]  40                     ?   18 29 12.000 -10 55 00.00 30.00 nref           1      33
                SIMBAD   GPSR5 20.626-0.134              ?   18 29 12.050 -10 59 47.40  0.10 nref           1      34
                SIMBAD   HRDS G020.533-00.187            ?   18 29 12.900 -11 06 13.00  1.00 nref           4      35
                SIMBAD   SSTGLMC G020.4173-00.2478       ?   18 29 12.934 -11 14 03.20  0.11 nref           1      36
                SIMBAD   GRS G020.70 -00.10              ?   18 29 13.000 -10 52 54.00  3.00 nref           3      37
                SIMBAD   BGPS G020.646-00.129            ?   18 29 13.172 -10 58 36.08  0.01 nref           4      38
                SIMBAD   GAL 020.73-00.09                ?   18 29 13.900 -10 52 48.00  1.00 nref          11      39
                SIMBAD   [ABJ2009] C20.73-0.09           ?   18 29 14.000 -10 53 00.00  3.00 nref           3      40
                SIMBAD   SDC G20.692-0.108               ?   18 29 14.010 -10 55 34.70  0.10 nref           2      41
                SIMBAD   SDC G20.721-0.094               ?   18 29 14.180 -10 53 36.80  0.10 nref           2      42
                SIMBAD   XGPS-I J182914-105744           ?   18 29 14.940 -10 57 44.50  0.10 nref           1      43
                SIMBAD   Kes 68                          ?   18 29 15.000 -10 52 48.00  3.00 nref           3      44
                SIMBAD   2MASS J18291514-1059046         ?   18 29 15.145 -10 59 04.61  0.13 nref           1      45
                SIMBAD   [ERG2015] 3484                  ?   18 29 16.000 -10 58 30.00  3.00 nref           3      46
                SIMBAD   AGAL G020.746-00.092            ?   18 29 16.000 -10 52 12.00  3.00 nref           3      47
                SIMBAD   XGPS-I J182916-105444           ?   18 29 16.200 -10 54 44.20  0.10 nref           1      48
                SIMBAD   MSX6C G020.7491-00.0898         ?   18 29 16.400 -10 52 01.00  1.00 nref           4      49
                SIMBAD   GPSR5 20.750-0.089              ?   18 29 16.420 -10 51 57.60  0.10 nref           1      50
                SIMBAD   XGPS-I J182916-105348           ?   18 29 16.470 -10 53 48.30  0.10 nref           1      51
                SIMBAD   RFS  312                        ?   18 29 16.500 -10 53 20.00 10.00 nref           1      52
                SIMBAD   RAFGL 2169                      ?   18 29 16.560 -10 53 10.30  0.10 nref           1      53
                SIMBAD   BGPS G020.750-00.091            ?   18 29 16.739 -10 52 00.98  0.01 nref          11      54
                SIMBAD   RRF  134                        ?   18 29 16.800 -10 54 02.00  1.00 nref           1      55
                SIMBAD   MSX6C G020.7438-00.0952         ?   18 29 17.000 -10 52 27.00  1.00 nref           4      56
                SIMBAD   BGPS G020.661-00.139            ?   18 29 17.152 -10 58 01.76  0.01 nref          11      57
                SIMBAD   [SPK2012] MWP1G020733-001049    ?   18 29 17.800 -10 53 18.00  1.00 nref           2      58
                SIMBAD   AGAL G020.654-00.147            ?   18 29 18.000 -10 58 42.00  3.00 nref           2      59
                SIMBAD   SSTGLMC G020.5377-00.2089       ?   18 29 18.176 -11 06 33.86  0.00 nref           1      60
                SIMBAD   [L89b]  20.681-00.136           ?   18 29 18.600 -10 56 55.00  1.00 nref           3      61
                SIMBAD   SDC G20.707-0.123               ?   18 29 18.990 -10 55 12.20  0.10 nref           2      62
                SIMBAD   [ABJ2009] C20.68-0.14           ?   18 29 19.000 -10 57 12.00  3.00 nref           3      63
                SIMBAD   XGPS-I J182919-110708           ?   18 29 19.120 -11 07 08.10  0.10 nref           1      64
                SIMBAD   AGAL G020.756-00.107            ?   18 29 21.000 -10 52 06.00  3.00 nref           2      74
                SIMBAD   SSTGLMC G020.6827-00.1469       ?   18 29 21.200 -10 57 08.00  1.00 nref           1      75
                SIMBAD   SDC G20.721-0.128               ?   18 29 21.560 -10 54 35.60  0.10 nref           2      76
                SIMBAD   [WTB2016] F20                   ?   18 29 22.000 -10 51 06.00  3.00 nref           1      77
                SIMBAD   AGAL G020.669-00.162            ?   18 29 23.000 -10 58 18.00  3.00 nref           2      78
                SIMBAD   BGPS G020.672-00.161            ?   18 29 23.051 -10 58 06.62  0.01 nref           7      79
                SIMBAD   XGPS-I J182924-111634           ?   18 29 24.510 -11 16 34.30  0.10 nref           1      80
                SIMBAD   SSTGLMC G020.3928-00.3157       ?   18 29 24.870 -11 17 14.41  0.12 nref           1      81
                SIMBAD   Gaia DR2 4154931021188266752    ?   18 29 24.940 -10 51 13.66  0.00 nref           1      82
                SIMBAD   AGAL G020.757-00.127            ?   18 29 25.000 -10 52 36.00  3.00 nref           2      83
                SIMBAD   IRAS 18266-1113                 ?   18 29 25.250 -11 11 05.30  0.10 nref           0      84
                SIMBAD   BGPS G020.760-00.127            ?   18 29 25.667 -10 52 29.22  0.01 nref           8      85
                SIMBAD   IRAS 18266-1059                 ?   18 29 25.900 -10 57 43.00 41.00 nref           1      86
                SIMBAD   2MASS J18292772-1055461         ?   18 29 27.729 -10 55 45.89  0.00 nref           3      87
                SIMBAD   XGPS-I J182928-105257           ?   18 29 28.430 -10 52 57.90  0.10 nref           1      88
                SIMBAD   AGAL G020.729-00.159            ?   18 29 29.000 -10 55 00.00  3.00 nref           2      89
                SIMBAD   UWISH2 G020.70907-0.17267       ?   18 29 29.760 -10 56 27.60  0.10 nref           2      90
                SIMBAD   BGPS G020.731-00.161            ?   18 29 29.854 -10 54 55.29  0.01 nref           6      91
                SIMBAD   BGPS G020.565-00.249            ?   18 29 30.091 -11 06 11.61  0.01 nref           3      92
                SIMBAD   SSTGLMC G020.6196-00.2223       ?   18 29 30.349 -11 02 34.60  0.00 nref           1      93
                SIMBAD   XGPS-I J182930-105926           ?   18 29 30.870 -10 59 26.30  0.10 nref           2      94
                SIMBAD   XGPS-I J182931-110418           ?   18 29 31.220 -11 04 18.60  0.10 nref           1      95
                SIMBAD   SSTGLMC G020.7060-00.1852       ?   18 29 32.118 -10 56 57.93  0.11 nref           1      96
                SIMBAD   BGPS G020.588-00.249            ?   18 29 32.587 -11 05 01.45  0.01 nref           4      97
                SIMBAD   XGPS-I J182934-105142           ?   18 29 34.140 -10 51 41.20  0.06 nref           1      98
                SIMBAD   XGPS-I J182935-111552           ?   18 29 35.230 -11 15 52.50  0.10 nref           1      99
                SIMBAD   [JHC82] 020.4-0.3               ?   18 29 35.500 -11 15 53.00  1.00 nref           1     100
                SIMBAD   GLMP  788                       ?   18 29 35.500 -11 15 53.00  1.00 nref          25     101
                SIMBAD   [TVH89] 309                     ?   18 29 35.500 -11 15 53.00  1.00 nref           1     102
                SIMBAD   OH  20.43  -0.34                ?   18 29 35.500 -11 15 53.00  1.00 nref           4     103
                SIMBAD   USNO-A2.0 0750-13311799         ?   18 29 39.616 -10 58 34.56  0.00 nref           2     104
                SIMBAD   CSS 1047                        ?   18 29 41.218 -11 09 56.50  0.00 nref          11     105
                SIMBAD   XGPS-I J182942-110050           ?   18 29 42.503 -11 00 49.50  0.06 nref           2     107
        1 chart SIMBAD   XGPS-I J182943-105801           ?   18 29 43.980 -10 58 01.40  0.10 nref           1     109
                SIMBAD   AGAL G020.767-00.207            ?   18 29 44.000 -10 54 18.00  3.00 nref           2     110
                SIMBAD   BGPS G020.768-00.209            ?   18 29 44.328 -10 54 20.62  0.01 nref           8     114
                SIMBAD   XGPS-I J182947-110945           ?   18 29 47.690 -11 09 45.10  0.10 nref           1     116
        2 chart SIMBAD   [HSS84] 34                      ?   18 29 48.000 -11 05 00.00 30.00 nref           1     117
        2 chart SIMBAD   XGPS-I J182948-110604           ?   18 29 48.800 -11 06 04.30  0.10 nref           1     124
                SIMBAD   [ERG2015] 3471                  ?   18 29 49.000 -11 17 54.00  3.00 nref           3     126
                SIMBAD   XGPS-I J182949-110319           ?   18 29 49.210 -11 03 19.40  0.10 nref           1     127
                SIMBAD   SSTGLMC G020.7455-00.2441       ?   18 29 49.360 -10 56 30.08  0.08 nref           1     128
                SIMBAD   SSTGLMC G020.4811-00.3832       ?   18 29 49.529 -11 14 25.76  0.06 nref           1     129
                SIMBAD   XGPS-I J182950-110159           ?   18 29 50.270 -11 01 59.80  0.10 nref           1     131
                SIMBAD   IRAS 18270-1056                 ?   18 29 50.400 -10 54 26.00 47.00 nref           1     132
                SIMBAD   [SSS2011] BGPS G20.434-0.413    ?   18 29 50.700 -11 17 47.00  0.10 nref           1     133
                SIMBAD   XGPS-I J182950-110942           ?   18 29 50.770 -11 09 42.10  0.10 nref           1     134
                SIMBAD   XGPS-I J182950-111634           ?   18 29 50.870 -11 16 34.20  0.10 nref           1     135
                SIMBAD   AGAL G020.431-00.414            ?   18 29 51.000 -11 18 00.00  3.00 nref           2     136
                SIMBAD   [ERG2015] 3472                  ?   18 29 51.000 -11 17 42.00  3.00 nref           3     137
                SIMBAD   [SPK2012] MWP1G020767-002435    ?   18 29 51.800 -10 55 22.00  1.00 nref           1     138
                SIMBAD   [SPK2012] MWP1G020700-002800S   ?   18 29 52.000 -10 59 55.00  1.00 nref           1     139
                SIMBAD   USNO-A2.0 0750-13321102         ?   18 29 52.914 -11 06 59.80  0.00 nref           1     140
                SIMBAD   BGPS G020.706-00.283            ?   18 29 53.330 -10 59 41.87  0.01 nref           6     142
                SIMBAD   AGAL G020.702-00.286            ?   18 29 54.000 -11 00 00.00  3.00 nref           2     144
                SIMBAD   SSTGLMC G020.5541-00.3702       ?   18 29 54.970 -11 10 11.21  0.00 nref           1     145
                SIMBAD   IRAS 18271-1101                 ?   18 29 55.400 -10 59 37.00 16.00 nref           1     146
                SIMBAD   SSTGLMC G020.5658-00.3662       ?   18 29 55.452 -11 09 27.25  0.08 nref           1     147
                SIMBAD   SDC G20.830-0.227               ?   18 29 55.460 -10 51 30.50  0.10 nref           2     148
                SIMBAD   [SPK2012] MWP1G020715-002896    ?   18 29 55.800 -10 59 24.00  1.00 nref           1     149
                SIMBAD   USNO-A2.0 0750-13323591         ?   18 29 55.970 -11 05 33.80  0.10 nref           1     150
                SIMBAD   [SUH2012] G020.711-00.291       ?   18 29 56.000 -10 59 38.00  1.00 nref           1     151
                SIMBAD   2MASS J18295608-1102437         ?   18 29 56.090 -11 02 43.80  0.11 nref           3     152
        4 chart SIMBAD   XGPS-I J182956-111313           ?   18 29 56.520 -11 13 13.50  0.10 nref           1     163
                SIMBAD   XGPS-I J182956-110458           ?   18 29 56.850 -11 04 58.80  0.10 nref           1     165
                SIMBAD   XGPS-I J182957-110235           ?   18 29 57.140 -11 02 35.80  0.10 nref           1     166
                SIMBAD   BGPS G020.708-00.311            ?   18 29 59.623 -11 00 22.21  0.01 nref           9     167
                SIMBAD   IRAS 18272-1117                 ?   18 29 59.898 -11 15 49.06  0.00 nref           1     168
                SIMBAD   SRBY  78                        ?   18 30 00.000 -11 02 00.00 30.00 nref           2     169
                SIMBAD   AGAL G020.707-00.314            ?   18 30 00.000 -11 00 30.00  3.00 nref           3     170
                SIMBAD   SSTGLMC G020.7360-00.2983       ?   18 30 00.000 -10 58 31.00  1.00 nref           1     171
                SIMBAD   SSTGLMC G020.7077-00.3136       ?   18 30 00.100 -11 00 27.00  1.00 nref           1     172
        6 chart SIMBAD   XGPS-I J183000-110720           ?   18 30 00.380 -11 07 20.30  0.10 nref           1     174
                SIMBAD   XGPS-I J183002-110735           ?   18 30 02.310 -11 07 35.60  0.10 nref           1     179
        4 chart SIMBAD   PMN J1830-1113                  ?   18 30 04.000 -11 13 12.00 36.00 nref           1     180
                SIMBAD   RFS  309                        ?   18 30 04.600 -11 13 32.00 20.00 nref           1     182
                SIMBAD   IRAS 18273-1113                 ?   18 30 05.028 -11 11 35.56  0.00 nref           1     183
                SIMBAD   SRBY  77                        ?   18 30 06.000 -11 10 00.00 30.00 nref           2     184
                SIMBAD   2MASS J18300650-1109581         ?   18 30 06.511 -11 09 58.20  0.00 nref           3     185
                SIMBAD   IRAS 18273-1120                 ?   18 30 06.980 -11 18 30.80  0.10 nref           0     193
                SIMBAD   SDC G20.712-0.345               ?   18 30 07.610 -11 01 04.40  0.10 nref           2     196
                SIMBAD   AGAL G020.711-00.346            ?   18 30 08.000 -11 01 12.00  3.00 nref           2     197
                SIMBAD   [ERG2015] 3490                  ?   18 30 08.000 -11 00 54.00  3.00 nref           3     198
                SIMBAD   SSTGLMC G020.7249-00.3445       ?   18 30 08.800 -11 00 23.00  1.00 nref           1     199
                SIMBAD   SSTGLMC G020.5455-00.4390       ?   18 30 08.900 -11 12 33.00  1.00 nref           1     200
                SIMBAD   BGPS G020.545-00.443            ?   18 30 09.873 -11 12 39.15  0.01 nref          11     201
                SIMBAD   BGPS G020.718-00.359            ?   18 30 11.156 -11 01 10.40  0.01 nref          14     204
                SIMBAD   SSTGLMC G020.7212-00.3580       ?   18 30 11.300 -11 00 58.00  1.00 nref           1     207
                SIMBAD   IRAS 18274-1052                 ?   18 30 11.300 -10 50 25.00 52.00 nref           0     208
                SIMBAD   SDC G20.713-0.364               ?   18 30 11.960 -11 01 32.90  0.10 nref           2     210
                SIMBAD   2MASS J18301244-1106369         ?   18 30 12.442 -11 06 36.92  0.08 nref           1     211
                SIMBAD   IRAS 18274-1107                 ?   18 30 12.600 -11 05 03.00 43.00 nref           0     212
                SIMBAD   XGPS-I J183012-110759           ?   18 30 12.700 -11 07 59.40  0.10 nref           1     213
                SIMBAD   2MASS J18301278-1115463         ?   18 30 12.769 -11 15 46.43  0.00 nref           1     214
                SIMBAD   [ERG2015] 3482                  ?   18 30 13.000 -11 12 00.00  3.00 nref           3     215
                SIMBAD   DOBASHI 0862                    ?   18 30 13.700 -11 11 44.00  1.00 nref           1     216
                SIMBAD   XGPS-I J183013-110450           ?   18 30 13.720 -11 04 50.20  0.10 nref           1     217
                SIMBAD   [ERG2015] 3486                  ?   18 30 15.000 -11 05 06.00  3.00 nref           3     218
                SIMBAD   2MASS J18301610-1115376         ?   18 30 16.095 -11 15 37.61  0.00 nref           1     219
                SIMBAD   XGPS-I J183017-110215           ?   18 30 17.340 -11 02 15.60  0.10 nref           1     220
                SIMBAD   TYC 5694-721-1                  ?   18 30 21.503 -11 07 15.51  0.00 nref           0     221
                SIMBAD   2MASS J18302312-1058105         ?   18 30 23.125 -10 58 10.56  0.00 nref           2     222
                SIMBAD   BGPS G020.609-00.471            ?   18 30 23.196 -11 10 01.69  0.01 nref           3     223
                SIMBAD   2MASS J18302663-1052335         ?   18 30 26.636 -10 52 33.47  0.00 nref           2     239
                SIMBAD   IRAS 18276-1111                 ?   18 30 28.190 -11 08 59.90  0.10 nref           1     240
                SIMBAD   SSTGLMC G020.5613-00.5222       ?   18 30 28.755 -11 14 01.73  0.06 nref           1     241
                SIMBAD   XGPS-I J183029-111110           ?   18 30 29.380 -11 11 10.90  0.10 nref           1     242
                SIMBAD   IRAS 18277-1119                 ?   18 30 30.300 -11 17 05.00 62.00 nref           0     243
                SIMBAD   GLMP  791                       ?   18 30 32.800 -10 57 32.00 19.00 nref           8     244
                SIMBAD   IRAS 18278-1110                 ?   18 30 35.200 -11 08 15.00 18.00 nref           0     245
                SIMBAD   USNO-A2.0 0750-13360556         ?   18 30 37.740 -11 08 31.20  0.10 nref           1     246
                SIMBAD   SSTGLMC G020.7749-00.4577       ?   18 30 38.964 -11 00 52.60  0.06 nref           1     247
                SIMBAD   IRAS 18279-1114                 ?   18 30 44.570 -11 11 48.70  0.10 nref           0     248
                SIMBAD   GAL 020.8-00.6                  ?   18 30 46.100 -11 02 57.00 11.00 nref           3     249
                SIMBAD   SSTGLMC G020.7161-00.5234       ?   18 30 46.558 -11 05 49.77  0.06 nref           1     250
                SIMBAD   PSR B1828-10                    ?   18 30 47.566 -10 59 27.90  0.01 nref         131     251
                SIMBAD   AGAL G020.656-00.561            ?   18 30 48.000 -11 10 06.00  3.00 nref           2     252