| datetime | T - Trig [h] | T - Not [h] | Area [sq. deg] |
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| 2021-09-09 07:01:45 | 336.0 | 335.3 | 49.2 |
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MASTER Net MASTER Database: LIGO GRB210826.29 alert (last error box)Please use the reference to MASTER DataBase as Lipunov et al., 2010, MASTER Robotic Net, Advances in Astronomy, vol. 2010, p.30L |
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MASTER WFC:
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MASTER II: |
General: |
| This work was supported by RFBR BRICS 17-52-80133 grant. |
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ALL PLOTS
datetime
T - Trig [h]
T - Not [h]
Area [sq. deg]
Box 50% 90% FULL [%] 27.1 33.1 44.1
2021-09-09 07:01:45
336.0
335.3
49.2
Discoveries in this field
No discoveries yet!
Errorbox center visibility at MASTER facilities
SELECT set_sphere_output('HMS'); select set_sphere_output_precision(1); select distinct on (gn) get_grb_name2 (grbtime, satel ) as gn, coord2000, satel, errorbox, 'now'::timestamp,'now'::timestamp+'1 hour'::interval,grbtime+'1 hour'::interval from grb where tabs(grbtime-'2021-08-26 07:01:45')<'10 minutes'::interval order by gn,seq desc,errorbox asc;
| trigger | notice | notice+1hr | now |
| 2021-08-26 07:01:45 (JD 2459452.792882) Siderial time 7.854119 h Ra 04:24:36.00 Dec -78:16:12.00 Rise n/a Transit n/a Set n/a AmurObject: Altitude: -58.78 Azimuth: 14.12 Sun: Altitude: 31.28 Azimuth: 66.36 Moon: Altitude: -35.22 Azimuth: 191.01 TunkaObject: Altitude: -55.77 Azimuth: 18.77 Sun: Altitude: 42.63 Azimuth: 39.39 Moon: Altitude: -32.76 Azimuth: 161.61 KislovodskObject: Altitude: -36.59 Azimuth: 12.20 Sun: Altitude: 46.57 Azimuth: 310.32 Moon: Altitude: -7.34 Azimuth: 102.61 TavridaObject: Altitude: -36.34 Azimuth: 10.82 Sun: Altitude: 41.06 Azimuth: 301.70 Moon: Altitude: -1.17 Azimuth: 96.67 SAAOObject: Altitude: 41.70 Azimuth: 8.95 Sun: Altitude: 23.10 Azimuth: 239.78 Moon: Altitude: 4.36 Azimuth: 97.43 IACObject: Altitude: -16.58 Azimuth: 359.48 Sun: Altitude: 3.84 Azimuth: 260.23 Moon: Altitude: 40.80 Azimuth: 68.75 ArgentinaObject: Altitude: 37.91 Azimuth: 347.77 Sun: Altitude: -50.53 Azimuth: 294.73 Moon: Altitude: 53.52 Azimuth: 193.19 MexicoObject: Altitude: -31.62 Azimuth: 346.27 Sun: Altitude: -48.24 Azimuth: 172.44 Moon: Altitude: 36.68 Azimuth: 290.44 UralObject: Altitude: -52.21 Azimuth: 18.56 Sun: Altitude: 41.92 Azimuth: 339.74 Moon: Altitude: -12.88 Azimuth: 118.75 VostryakovoObject: Altitude: -47.26 Azimuth: 13.63 Sun: Altitude: 36.55 Azimuth: 312.66 Moon: Altitude: -2.05 Azimuth: 99.90 Gal. latitude: -33.844092 Gal. longitude: 291.593046 Dist. to Sun: 99.946081 Dist. to Moon: 85.965986 Moon coord.: (18.679249 d, 3.909422 d) Sun coord.: (154.920847 d, 10.415542 d) Lunar disk: 0.848871 Lunar phase: 45.753941 Lunar bright limb: 71.408958 No SN in this field |
2021-08-26 07:41:48 (JD 2459452.820694) Siderial time 8.523447 h Ra 04:24:36.00 Dec -78:16:12.00 Rise n/a Transit n/a Set n/a AmurObject: Altitude: -60.19 Azimuth: 11.23 Sun: Altitude: 25.24 Azimuth: 75.20 Moon: Altitude: -33.28 Azimuth: 202.52 TunkaObject: Altitude: -57.72 Azimuth: 17.66 Sun: Altitude: 38.23 Azimuth: 50.98 Moon: Altitude: -33.92 Azimuth: 173.15 KislovodskObject: Altitude: -38.22 Azimuth: 13.74 Sun: Altitude: 51.52 Azimuth: 323.35 Moon: Altitude: -13.97 Azimuth: 109.82 TavridaObject: Altitude: -37.79 Azimuth: 12.62 Sun: Altitude: 46.72 Azimuth: 312.92 Moon: Altitude: -7.86 Azimuth: 103.72 SAAOObject: Altitude: 40.24 Azimuth: 10.83 Sun: Altitude: 30.12 Azimuth: 232.04 Moon: Altitude: -3.90 Azimuth: 92.33 IACObject: Altitude: -16.66 Azimuth: 1.60 Sun: Altitude: 12.58 Azimuth: 264.83 Moon: Altitude: 32.73 Azimuth: 75.49 ArgentinaObject: Altitude: 39.62 Azimuth: 349.20 Sun: Altitude: -42.55 Azimuth: 286.30 Moon: Altitude: 54.09 Azimuth: 176.74 MexicoObject: Altitude: -29.59 Azimuth: 346.51 Sun: Altitude: -48.28 Azimuth: 187.26 Moon: Altitude: 44.37 Azimuth: 298.26 UralObject: Altitude: -54.02 Azimuth: 20.11 Sun: Altitude: 43.20 Azimuth: 353.02 Moon: Altitude: -17.17 Azimuth: 127.77 VostryakovoObject: Altitude: -48.71 Azimuth: 15.77 Sun: Altitude: 40.31 Azimuth: 324.29 Moon: Altitude: -7.28 Azimuth: 108.10 Gal. latitude: -33.844092 Gal. longitude: 291.593046 Dist. to Sun: 99.941784 Dist. to Moon: 86.066733 Moon coord.: (18.991405 d, 4.058501 d) Sun coord.: (154.946296 d, 10.405871 d) Lunar disk: 0.846895 Lunar phase: 46.069195 Lunar bright limb: 71.393452 No SN in this field |
2021-08-26 08:41:48 (JD 2459452.862361) Siderial time 9.526185 h Ra 04:24:36.00 Dec -78:16:12.00 Rise n/a Transit n/a Set n/a AmurObject: Altitude: -61.62 Azimuth: 5.69 Sun: Altitude: 15.77 Azimuth: 87.31 Moon: Altitude: -28.34 Azimuth: 218.47 TunkaObject: Altitude: -60.33 Azimuth: 14.58 Sun: Altitude: 30.31 Azimuth: 66.09 Moon: Altitude: -33.40 Azimuth: 190.63 KislovodskObject: Altitude: -40.97 Azimuth: 15.45 Sun: Altitude: 56.07 Azimuth: 347.27 Moon: Altitude: -23.28 Azimuth: 121.62 TavridaObject: Altitude: -40.33 Azimuth: 14.79 Sun: Altitude: 53.10 Azimuth: 333.70 Moon: Altitude: -17.45 Azimuth: 114.93 SAAOObject: Altitude: 37.62 Azimuth: 12.83 Sun: Altitude: 39.10 Azimuth: 217.77 Moon: Altitude: -16.32 Azimuth: 84.63 IACObject: Altitude: -17.39 Azimuth: 4.70 Sun: Altitude: 25.77 Azimuth: 271.86 Moon: Altitude: 20.22 Azimuth: 83.80 ArgentinaObject: Altitude: 41.71 Azimuth: 352.13 Sun: Altitude: -30.05 Azimuth: 276.52 Moon: Altitude: 50.65 Azimuth: 153.49 MexicoObject: Altitude: -26.69 Azimuth: 347.56 Sun: Altitude: -44.37 Azimuth: 207.93 Moon: Altitude: 54.63 Azimuth: 314.25 UralObject: Altitude: -56.95 Azimuth: 21.62 Sun: Altitude: 42.74 Azimuth: 13.22 Moon: Altitude: -22.57 Azimuth: 142.13 VostryakovoObject: Altitude: -51.23 Azimuth: 18.44 Sun: Altitude: 44.04 Azimuth: 343.61 Moon: Altitude: -14.61 Azimuth: 120.89 Gal. latitude: -33.844092 Gal. longitude: 291.593046 Dist. to Sun: 99.935341 Dist. to Moon: 86.217797 Moon coord.: (19.458912 d, 4.281447 d) Sun coord.: (154.984419 d, 10.391379 d) Lunar disk: 0.843917 Lunar phase: 46.541145 Lunar bright limb: 71.372888 No SN in this field |
2024-04-20 11:11:43 (JD 2460420.966470) Siderial time 3.638747 h Ra 04:24:36.00 Dec -78:16:12.00 Rise n/a Transit n/a Set n/a AmurObject: Altitude: -46.65 Azimuth: 16.86 Sun: Altitude: -6.83 Azimuth: 117.59 Moon: Altitude: 38.79 Azimuth: 321.92 TunkaObject: Altitude: -44.06 Azimuth: 13.21 Sun: Altitude: 8.15 Azimuth: 98.52 Moon: Altitude: 26.06 Azimuth: 297.30 KislovodskObject: Altitude: -32.08 Azimuth: 358.40 Sun: Altitude: 48.22 Azimuth: 49.35 Moon: Altitude: -13.18 Azimuth: 249.34 TavridaObject: Altitude: -33.34 Azimuth: 356.35 Sun: Altitude: 51.70 Azimuth: 37.33 Moon: Altitude: -18.34 Azimuth: 242.45 SAAOObject: Altitude: 42.49 Azimuth: 352.47 Sun: Altitude: 45.06 Azimuth: 166.97 Moon: Altitude: -40.44 Azimuth: 293.56 IACObject: Altitude: -22.99 Azimuth: 348.39 Sun: Altitude: 59.03 Azimuth: 296.82 Moon: Altitude: -55.81 Azimuth: 192.73 ArgentinaObject: Altitude: 25.69 Azimuth: 348.57 Sun: Altitude: 1.54 Azimuth: 255.25 Moon: Altitude: -39.72 Azimuth: 67.86 MexicoObject: Altitude: -41.93 Azimuth: 354.53 Sun: Altitude: -19.77 Azimuth: 242.15 Moon: Altitude: -0.12 Azimuth: 96.13 UralObject: Altitude: -45.45 Azimuth: 2.99 Sun: Altitude: 31.70 Azimuth: 58.95 Moon: Altitude: 0.67 Azimuth: 261.48 VostryakovoObject: Altitude: -43.83 Azimuth: 356.81 Sun: Altitude: 41.67 Azimuth: 35.60 Moon: Altitude: -11.29 Azimuth: 243.15 Gal. latitude: -33.844092 Gal. longitude: 291.593046 Dist. to Sun: 92.317625 Dist. to Moon: 98.527500 Moon coord.: (173.308055 d, 5.189117 d) Sun coord.: (28.413443 d, 11.660855 d) Lunar disk: 0.890373 Lunar phase: 38.671135 Lunar bright limb: 295.923369 No SN in this field |
####################################################################################### ####################################################################################### ID = 4876 TYPE = 35 DAYS = 1 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the GFERMI Alert 210826.29 (trigger No 651654110,05h 37m 12.00s , -75d 36m 00.0s, R=5.75847) errorbox 34322 sec after notice time and 36720 sec after trigger time at 2021-08-26 17:13:45 UT, with upper limit up to 18.8 mag. Observations started at twilight. The observations began at zenith distance = 73 deg. The sun altitude is -12.4 deg. The galactic latitude b = -31 deg., longitude l = 287 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1700574 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 36750 | 2021-08-26 17:13:45 | MASTER-SAAO | (05h 31m 19.53s , -74d 44m 19.3s) | C | 60 | 17.6 | 36830 | 2021-08-26 17:15:04 | MASTER-SAAO | (06h 01m 37.46s , -74d 43m 51.3s) | C | 60 | 17.5 | 36910 | 2021-08-26 17:16:24 | MASTER-SAAO | (05h 11m 37.00s , -76d 38m 26.5s) | C | 60 | 17.8 | 37189 | 2021-08-26 17:21:04 | MASTER-SAAO | (05h 49m 50.32s , -76d 36m 34.8s) | C | 60 | 17.6 | 37668 | 2021-08-26 17:29:02 | MASTER-SAAO | (05h 35m 20.93s , -74d 44m 16.3s) | C | 60 | 17.6 | 37748 | 2021-08-26 17:30:23 | MASTER-SAAO | (06h 04m 15.18s , -74d 43m 52.6s) | C | 60 | 17.5 | 37828 | 2021-08-26 17:31:42 | MASTER-SAAO | (05h 14m 40.05s , -76d 40m 18.1s) | C | 60 | 17.8 | 37907 | 2021-08-26 17:33:02 | MASTER-SAAO | (04h 36m 03.79s , -74d 48m 17.3s) | C | 60 | 17.7 | 37987 | 2021-08-26 17:34:21 | MASTER-SAAO | (05h 06m 34.96s , -74d 45m 09.8s) | C | 60 | 17.6 | 38067 | 2021-08-26 17:35:41 | MASTER-SAAO | (05h 49m 19.46s , -72d 48m 34.2s) | C | 60 | 17.1 | 38147 | 2021-08-26 17:37:01 | MASTER-SAAO | (06h 16m 30.46s , -72d 48m 15.7s) | C | 60 | 17.4 | 38226 | 2021-08-26 17:38:21 | MASTER-SAAO | (05h 49m 12.15s , -76d 38m 43.7s) | C | 60 | 17.5 | 38306 | 2021-08-26 17:39:41 | MASTER-SAAO | (04h 57m 48.30s , -72d 51m 19.5s) | C | 60 | 17.3 | 39505 | 2021-08-26 17:59:39 | MASTER-SAAO | (05h 26m 34.81s , -72d 50m 38.4s) | C | 60 | 17.4 | 39790 | 2021-08-26 18:04:24 | MASTER-SAAO | (05h 35m 39.27s , -74d 43m 57.9s) | C | 60 | 18.2 | 39870 | 2021-08-26 18:05:44 | MASTER-SAAO | (06h 05m 57.59s , -74d 43m 22.8s) | C | 60 | 18.2 | 39949 | 2021-08-26 18:07:04 | MASTER-SAAO | (05h 16m 20.51s , -76d 41m 01.4s) | C | 60 | 18.5 | 40029 | 2021-08-26 18:08:23 | MASTER-SAAO | (04h 37m 39.36s , -74d 48m 45.0s) | C | 60 | 18.4 | 40109 | 2021-08-26 18:09:43 | MASTER-SAAO | (05h 08m 07.13s , -74d 45m 39.6s) | C | 60 | 18.2 | 40188 | 2021-08-26 18:11:03 | MASTER-SAAO | (05h 50m 48.43s , -72d 50m 57.9s) | C | 60 | 17.8 | 40268 | 2021-08-26 18:12:23 | MASTER-SAAO | (06h 17m 57.48s , -72d 48m 07.2s) | C | 60 | 18.1 | 40348 | 2021-08-26 18:13:42 | MASTER-SAAO | (05h 51m 01.26s , -76d 38m 18.2s) | C | 60 | 18.4 | 40427 | 2021-08-26 18:15:02 | MASTER-SAAO | (04h 59m 10.17s , -72d 52m 02.3s) | C | 60 | 18.0 | 40707 | 2021-08-26 18:19:42 | MASTER-SAAO | (05h 26m 36.90s , -72d 52m 44.5s) | C | 60 | 17.6 | 40787 | 2021-08-26 18:21:01 | MASTER-SAAO | (04h 51m 51.29s , -78d 34m 46.7s) | C | 60 | 18.8 | 41067 | 2021-08-26 18:25:41 | MASTER-SAAO | (05h 32m 24.24s , -78d 32m 51.5s) | C | 60 | 18.8 | 41146 | 2021-08-26 18:27:01 | MASTER-SAAO | (04h 37m 56.20s , -74d 48m 33.1s) | C | 60 | 18.6 | 41226 | 2021-08-26 18:28:20 | MASTER-SAAO | (05h 08m 28.02s , -74d 45m 53.6s) | C | 60 | 18.3 | 41305 | 2021-08-26 18:29:40 | MASTER-SAAO | (05h 51m 10.98s , -72d 50m 32.9s) | C | 60 | 17.8 | 41385 | 2021-08-26 18:31:00 | MASTER-SAAO | (06h 18m 04.11s , -72d 50m 08.3s) | C | 60 | 18.1 | 41465 | 2021-08-26 18:32:19 | MASTER-SAAO | (04h 59m 26.16s , -72d 54m 10.9s) | C | 60 | 18.0 | 41544 | 2021-08-26 18:33:39 | MASTER-SAAO | (06h 22m 29.94s , -76d 37m 56.6s) | C | 60 | 18.6 | 41624 | 2021-08-26 18:34:58 | MASTER-SAAO | (06h 56m 46.31s , -76d 34m 48.7s) | C | 60 | 18.0 | 47043 | 2021-08-26 20:05:18 | MASTER-SAAO | (05h 26m 52.65s , -72d 53m 35.7s) | C | 60 | 16.3 | 47123 | 2021-08-26 20:06:37 | MASTER-SAAO | (04h 52m 12.88s , -78d 38m 29.0s) | C | 60 | 16.5 | 49364 | 2021-08-26 20:43:59 | MASTER-SAAO | (06h 23m 06.67s , -76d 39m 19.6s) | C | 60 | 17.9 | 49444 | 2021-08-26 20:45:18 | MASTER-SAAO | (06h 57m 53.87s , -76d 38m 21.2s) | C | 60 | 17.6 | 49523 | 2021-08-26 20:46:38 | MASTER-SAAO | (04h 52m 03.27s , -78d 40m 24.0s) | C | 60 | 18.0 | 49603 | 2021-08-26 20:47:57 | MASTER-SAAO | (05h 32m 47.42s , -78d 37m 51.2s) | C | 60 | 17.7 | 49682 | 2021-08-26 20:49:17 | MASTER-SAAO | (06h 09m 12.76s , -78d 35m 56.7s) | C | 60 | 17.5 | 49762 | 2021-08-26 20:50:37 | MASTER-SAAO | (06h 49m 38.17s , -78d 32m 03.7s) | C | 60 | 17.8 | 49842 | 2021-08-26 20:51:56 | MASTER-SAAO | (06h 34m 09.10s , -74d 44m 46.1s) | C | 60 | 17.5 | 49922 | 2021-08-26 20:53:16 | MASTER-SAAO | (07h 04m 39.05s , -74d 44m 03.5s) | C | 60 | 17.3 | 50001 | 2021-08-26 20:54:36 | MASTER-SAAO | (04h 10m 45.75s , -76d 48m 28.5s) | C | 60 | 17.9 | 50081 | 2021-08-26 20:55:56 | MASTER-SAAO | (04h 45m 43.22s , -76d 45m 25.0s) | C | 60 | 17.8 | 50161 | 2021-08-26 20:57:15 | MASTER-SAAO | (05h 17m 26.09s , -71d 01m 21.1s) | C | 60 | 16.5 | 50240 | 2021-08-26 20:58:35 | MASTER-SAAO | (05h 41m 58.02s , -71d 00m 57.8s) | C | 60 | 16.1 | 50406 | 2021-08-26 21:01:20 | MASTER-SAAO | (06h 58m 01.43s , -76d 38m 38.8s) | C | 60 | 17.3 | 50485 | 2021-08-26 21:02:40 | MASTER-SAAO | (05h 50m 09.23s , -80d 31m 06.1s) | C | 60 | 17.8 | 50565 | 2021-08-26 21:04:00 | MASTER-SAAO | (06h 38m 33.11s , -80d 27m 08.9s) | C | 60 | 17.8 | 50645 | 2021-08-26 21:05:19 | MASTER-SAAO | (06h 09m 14.24s , -78d 36m 16.7s) | C | 60 | 17.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 4873 TYPE = 34 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 210826A ( Fermi GBM team, GCN 30716) errorbox 36801 sec after notice time and 36879 sec after trigger time at 2021-08-26 17:16:24 UT, with upper limit up to 17.8 mag. Observations started at twilight. The observations began at zenith distance = 71 deg. The sun altitude is -13.0 deg. The galactic latitude b = -35 deg., longitude l = 291 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1700544 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 36909 | 2021-08-26 17:16:24 | MASTER-SAAO | (05h 11m 37.00s , -76d 38m 26.5s) | C | 60 | 17.8 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 4874 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 210826A ( Fermi GBM team, GCN 30716) errorbox 36801 sec after notice time and 36879 sec after trigger time at 2021-08-26 17:16:24 UT, with upper limit up to 17.8 mag. Observations started at twilight. The observations began at zenith distance = 71 deg. The sun altitude is -13.0 deg. The galactic latitude b = -35 deg., longitude l = 291 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1700544 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 36909 | 2021-08-26 17:16:24 | MASTER-SAAO | (05h 11m 37.00s , -76d 38m 26.5s) | C | 60 | 17.8 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 4875 TYPE = 35 DAYS = 0 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 210826A ( Fermi GBM team, GCN 30716) errorbox 36801 sec after notice time and 36879 sec after trigger time at 2021-08-26 17:16:24 UT, with upper limit up to 17.8 mag. Observations started at twilight. The observations began at zenith distance = 71 deg. The sun altitude is -13.0 deg. The galactic latitude b = -35 deg., longitude l = 291 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1700544 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 36909 | 2021-08-26 17:16:24 | MASTER-SAAO | (05h 11m 37.00s , -76d 38m 26.5s) | C | 60 | 17.8 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. ####################################################################################### ####################################################################################### ID = 4877 TYPE = 35 DAYS = 2 MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the FERMI GRB 210826A ( Fermi GBM team, GCN 30716) errorbox 36801 sec after notice time and 36879 sec after trigger time at 2021-08-26 17:16:24 UT, with upper limit up to 18.8 mag. Observations started at twilight. The observations began at zenith distance = 71 deg. The sun altitude is -13.0 deg. The galactic latitude b = -34 deg., longitude l = 292 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1700535 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 36909 | 2021-08-26 17:16:24 | MASTER-SAAO | (05h 11m 37.00s , -76d 38m 26.5s) | C | 60 | 17.8 | 37828 | 2021-08-26 17:31:42 | MASTER-SAAO | (05h 14m 40.05s , -76d 40m 18.1s) | C | 60 | 17.8 | 37907 | 2021-08-26 17:33:02 | MASTER-SAAO | (04h 36m 03.79s , -74d 48m 17.3s) | C | 60 | 17.7 | 39949 | 2021-08-26 18:07:04 | MASTER-SAAO | (05h 16m 20.51s , -76d 41m 01.4s) | C | 60 | 18.5 | 40029 | 2021-08-26 18:08:23 | MASTER-SAAO | (04h 37m 39.36s , -74d 48m 45.0s) | C | 60 | 18.4 | 40787 | 2021-08-26 18:21:01 | MASTER-SAAO | (04h 51m 51.29s , -78d 34m 46.7s) | C | 60 | 18.8 | 41066 | 2021-08-26 18:25:41 | MASTER-SAAO | (05h 32m 24.24s , -78d 32m 51.5s) | C | 60 | 18.8 | 41146 | 2021-08-26 18:27:01 | MASTER-SAAO | (04h 37m 56.20s , -74d 48m 33.1s) | C | 60 | 18.6 | 47122 | 2021-08-26 20:06:37 | MASTER-SAAO | (04h 52m 12.88s , -78d 38m 29.0s) | C | 60 | 16.5 | 49523 | 2021-08-26 20:46:38 | MASTER-SAAO | (04h 52m 03.27s , -78d 40m 24.0s) | C | 60 | 18.0 | 49603 | 2021-08-26 20:47:57 | MASTER-SAAO | (05h 32m 47.42s , -78d 37m 51.2s) | C | 60 | 17.7 | 50001 | 2021-08-26 20:54:36 | MASTER-SAAO | (04h 10m 45.75s , -76d 48m 28.5s) | C | 60 | 17.9 | 50081 | 2021-08-26 20:55:56 | MASTER-SAAO | (04h 45m 43.22s , -76d 45m 25.0s) | C | 60 | 17.8 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
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