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Databases NED Simbad GCN circulars archive GRB data table Software & Tools Swift Software (HEASoft) Xanadu WebPIMMS Institutional Swift Sites GSFC PSU OAB SSDC MSSL University of Leicester
Swift Trigger: 1069551;
Presumed name: GRB 210820A
| BAT | 01h 22m 30.96s, +04° 37′ 55.2″ |
|---|---|
| position: | (20.629, +4.632 ± 180″) |
| XRT | 01h 22m 33.48s, +04° 36′ 28.8″ |
| position: | (20.6395, 4.6080 ± 1.9″) |
| UVOT | 01h 22m 33.48s, +04° 36′ 28.1″ |
| position: | (20.6395, +4.6078 ± 0.8″) |
| Galactic NHI: | 3.27×1020 cm-2 |
| Galactic E(B-V): | 0.029 mag |
| Best RA: | 01h 22m 33.48s | = 20.6395 d |
|---|---|---|
| Best Dec: | +04° 36′ 28.1″ | = +4.6078 d |
| Gal Lat: | -57.39 | |
| Gal Long: | 137.43 | |
| Sun angle: | 126.73°, 8.6 hr West | |
Galaxies within 200 of XRT position
| RA* | Dec* | Redshift | Catalogue | Query | ||
|---|---|---|---|---|---|---|
| 2.6 | 20.6400 | 4.6075 | NED |  | ||
| 15.5 | 20.6412 | 4.6039 | NED | | ||
| 18.5 | 20.6388 | 4.6028 | NED | | ||
| 34.4 | 20.6475 | 4.6128 | NED | | ||
| 39.0 | 20.6412 | 4.5972 | NED | | ||
| 43.6 | 20.6383 | 4.5958 | NED | | ||
| 44.3 | 20.6325 | 4.5975 | NED | | ||
| 44.5 | 20.6317 | 4.6175 | NED | | ||
| 44.7 | 20.6321 | 4.5975 | NED | | ||
| 46.4 | 20.6296 | 4.5994 | NED | | ||
| 47.3 | 20.6510 | 4.6145 | B2=21.3, I=18.9, R2=19.8 | USNO-B1 | | |
| 48.4 | 20.6508 | 4.6147 | NED | | ||
| 48.6 | 20.6425 | 4.6208 | NED | | ||
| 56.7 | 20.6388 | 4.5919 | 0.491453 | NED | | |
| 57.2 | 20.6400 | 4.6236 | NED | | ||
| 57.2 | 20.6538 | 4.6011 | NED | | ||
| 57.9 | 20.6438 | 4.5922 | NED | | ||
| 57.9 | 20.6486 | 4.6213 | B=21.3, R=19.0 | APM-N | | |
| 58.5 | 20.6486 | 4.6215 | B1=20.5, B2=20.7, I=17.6, R1=18.4, R2=18.1 | USNO-B1 | | |
| 59.2 | 20.6483 | 4.6217 | NED | | ||
| 61.5 | 20.6283 | 4.6206 | NED | | ||
| 62.2 | 20.6479 | 4.5928 | NED | | ||
| 62.8 | 20.6467 | 4.5919 | NED | | ||
| 63.4 | 20.6517 | 4.5950 | NED | | ||
| 66.1 | 20.6325 | 4.6247 | NED | | ||
| 66.4 | 20.6225 | 4.6156 | NED | | ||
| 68.6 | 20.6583 | 4.6047 | NED | | ||
| 69.1 | 20.6588 | 4.6064 | NED | | ||
| 72.0 | 20.6383 | 4.6278 | NED | | ||
| 72.8 | 20.6571 | 4.5975 | NED | | ||
| 72.8 | 20.6229 | 4.5961 | NED | | ||
| 73.0 | 20.6554 | 4.6203 | NED | | ||
| 73.0 | 20.6196 | 4.6117 | NED | | ||
| 73.7 | 20.6571 | 4.5975 | B=22.4, R=19.8 | APM-N | | |
| 73.9 | 20.6187 | 4.6078 | NED | | ||
| 75.7 | 20.6496 | 4.5894 | NED | | ||
| 77.5 | 20.6196 | 4.5994 | NED | | ||
| 77.6 | 20.6462 | 4.5875 | NED | | ||
| 78.5 | 20.6275 | 4.5894 | NED | | ||
| 79.3 | 20.6604 | 4.6139 | NED | | ||
| 79.7 | 20.6200 | 4.6183 | NED | | ||
| 80.8 | 20.6367 | 4.5856 | NED | | ||
| 84.5 | 20.6178 | 4.6171 | B1=21.1, I=18.7 | USNO-B1 | | |
| 85.3 | 20.6187 | 4.6197 | NED | | ||
| 85.8 | 20.6604 | 4.6192 | NED | | ||
| 86.2 | 20.6542 | 4.5889 | NED | | ||
| 87.9 | 20.6200 | 4.5931 | NED | | ||
| 90.7 | 20.6150 | 4.6022 | NED | | ||
| 90.8 | 20.6592 | 4.6236 | NED | | ||
| 90.8 | 20.6638 | 4.6144 | NED | | ||
| 91.8 | 20.6254 | 4.6292 | NED | | ||
| 93.5 | 20.6133 | 4.6061 | NED | | ||
| 95.9 | 20.6404 | 4.5811 | NED | | ||
| 96.7 | 20.6196 | 4.6261 | NED | | ||
| 98.3 | 20.6271 | 4.5836 | NED | | ||
| 100.3 | 20.6175 | 4.5906 | NED | | ||
| 100.7 | 20.6658 | 4.6178 | NED | | ||
| 100.7 | 20.6504 | 4.6336 | NED | | ||
| 100.7 | 20.6125 | 4.5997 | NED | | ||
| 101.9 | 20.6658 | 4.5978 | NED | | ||
| 102.3 | 20.6288 | 4.6342 | NED | | ||
| 102.3 | 20.6562 | 4.6306 | NED | | ||
| 103.2 | 20.6621 | 4.5903 | NED | | ||
| 105.6 | 20.6575 | 4.6311 | NED | | ||
| 105.7 | 20.6554 | 4.6322 | NED | | ||
| 105.8 | 20.6554 | 4.5831 | NED | | ||
| 105.8 | 20.6658 | 4.6206 | NED | | ||
| 106.7 | 20.6121 | 4.5964 | NED | | ||
| 107.3 | 20.6429 | 4.5783 | NED | | ||
| 107.5 | 20.6117 | 4.5964 | NED | | ||
| 107.7 | 20.6117 | 4.6194 | NED | | ||
| 108.4 | 20.6325 | 4.6372 | NED | | ||
| 109.3 | 20.6654 | 4.5922 | NED | | ||
| 109.7 | 20.6625 | 4.6281 | NED | | ||
| 109.7 | 20.6549 | 4.6343 | B=21.0, R=18.4 | APM-N | | |
| 110.4 | 20.6550 | 4.6342 | NED | | ||
| 113.9 | 20.6704 | 4.6150 | NED | | ||
| 115.3 | 20.6450 | 4.6394 | NED | | ||
| 116.7 | 20.6213 | 4.6347 | NED | | ||
| 118.6 | 20.6621 | 4.5839 | NED | | ||
| 120.1 | 20.6658 | 4.5875 | NED | | ||
| 121.8 | 20.6283 | 4.5758 | NED | | ||
| 122.2 | 20.6708 | 4.5947 | NED | | ||
| 122.7 | 20.6062 | 4.6156 | NED | | ||
| 125.4 | 20.6350 | 4.5733 | NED | | ||
| 126.4 | 20.6075 | 4.5933 | NED | | ||
| 127.9 | 20.6154 | 4.5814 | NED | | ||
| 128.3 | 20.6742 | 4.6000 | NED | | ||
| 132.1 | 20.6762 | 4.6067 | NED | | ||
| 132.6 | 20.6658 | 4.6338 | B1=14.1, B2=14.8, I=12.6, R1=12.8, R2=13.2 | USNO-B1 | | |
| 132.8 | 20.6757 | 4.6159 | B1=20.8, B2=21.0 | USNO-B1 | | |
| 133.0 | 20.6604 | 4.6383 | NED | | ||
| 133.3 | 20.6729 | 4.5919 | NED | | ||
| 133.5 | 20.6658 | 4.6339 | NED | | ||
| 134.3 | 20.6071 | 4.5894 | NED | | ||
| 136.5 | 20.6333 | 4.5703 | NED | | ||
| 137.5 | 20.6752 | 4.6217 | B=21.2, R=19.5 | APM-N | | |
| 138.2 | 20.6750 | 4.6222 | NED | | ||
| 139.4 | 20.6658 | 4.5794 | NED | | ||
| 140.1 | 20.6021 | 4.5958 | NED | | ||
| 141.3 | 20.6242 | 4.5717 | NED | | ||
| 141.5 | 20.6000 | 4.6089 | NED | | ||
| 142.2 | 20.6104 | 4.6347 | 0.492057 | NED | | |
| 142.5 | 20.6737 | 4.5881 | NED | | ||
| 142.6 | 20.6050 | 4.6272 | NED | | ||
| 143.2 | 20.6713 | 4.5836 | NED | | ||
| 143.6 | 20.6475 | 4.6469 | NED | | ||
| 145.6 | 20.6767 | 4.6239 | NED | | ||
| 146.0 | 20.6792 | 4.5989 | NED | | ||
| 149.6 | 20.6487 | 4.5672 | NED | | ||
| 150.3 | 20.6379 | 4.5661 | NED | | ||
| 151.2 | 20.6042 | 4.6306 | NED | | ||
| 151.8 | 20.5983 | 4.6172 | NED | | ||
| 152.9 | 20.6750 | 4.6311 | -0.000279 | NED | | |
| 153.5 | 20.6067 | 4.6350 | NED | | ||
| 153.7 | 20.6150 | 4.5725 | NED | | ||
| 154.0 | 20.6187 | 4.5703 | NED | | ||
| 154.8 | 20.6013 | 4.6275 | NED | | ||
| 155.2 | 20.6196 | 4.6461 | NED | | ||
| 155.2 | 20.6696 | 4.6389 | NED | | ||
| 155.2 | 20.6088 | 4.5775 | NED | | ||
| 155.6 | 20.5983 | 4.6214 | NED | | ||
| 156.0 | 20.6313 | 4.5653 | NED | | ||
| 156.3 | 20.6821 | 4.6169 | NED | | ||
| 157.3 | 20.6733 | 4.5803 | NED | | ||
| 157.7 | 20.6737 | 4.5803 | NED | | ||
| 158.4 | 20.6075 | 4.6383 | B=20.6, R=19.1 | APM-N | | |
| 158.7 | 20.6075 | 4.6383 | NED | | ||
| 160.2 | 20.6717 | 4.5772 | NED | | ||
| 161.1 | 20.6392 | 4.6525 | NED | | ||
| 161.3 | 20.6829 | 4.5961 | NED | | ||
| 161.8 | 20.6679 | 4.6428 | NED | | ||
| 162.1 | 20.6846 | 4.6089 | NED | | ||
| 165.4 | 20.6388 | 4.5619 | NED | | ||
| 165.9 | 20.6446 | 4.6538 | B1=19.9, B2=20.5, R2=19.9 | USNO-B1 | | |
| 166.5 | 20.6167 | 4.5675 | NED | | ||
| 166.6 | 20.6013 | 4.6342 | NED | | ||
| 166.8 | 20.5933 | 4.6011 | NED | | ||
| 167.4 | 20.6003 | 4.5828 | B=22.3, R=20.0 | APM-N | | |
| 167.5 | 20.6446 | 4.6539 | NED | | ||
| 168.0 | 20.6346 | 4.6542 | NED | | ||
| 169.3 | 20.6867 | 4.6111 | NED | | ||
| 169.4 | 20.6021 | 4.5792 | NED | | ||
| 170.8 | 20.6104 | 4.6453 | NED | | ||
| 171.8 | 20.5967 | 4.6292 | NED | | ||
| 172.1 | 20.6137 | 4.6481 | NED | | ||
| 172.6 | 20.5958 | 4.6275 | NED | | ||
| 174.0 | 20.6504 | 4.6550 | NED | | ||
| 175.6 | 20.6525 | 4.5608 | NED | | ||
| 176.2 | 20.6771 | 4.6394 | B=22.3, R=20.0 | APM-N | | |
| 176.2 | 20.6633 | 4.6508 | B=20.3, R=19.5 | APM-N | | |
| 176.2 | 20.6629 | 4.6508 | NED | | ||
| 177.0 | 20.6652 | 4.5660 | B2=21.2, R1=19.4 | USNO-B1 | | |
| 177.1 | 20.6408 | 4.6569 | NED | | ||
| 177.1 | 20.6671 | 4.5672 | NED | | ||
| 177.4 | 20.6008 | 4.5769 | NED | | ||
| 177.9 | 20.6817 | 4.5817 | NED | | ||
| 177.9 | 20.5942 | 4.5875 | NED | | ||
| 178.1 | 20.6633 | 4.5644 | NED | | ||
| 178.2 | 20.6829 | 4.5842 | NED | | ||
| 179.3 | 20.6863 | 4.6247 | NED | | ||
| 179.9 | 20.5909 | 4.6202 | B1=21.2, R1=20.1 | USNO-B1 | | |
| 181.8 | 20.6883 | 4.5953 | NED | | ||
| 182.9 | 20.5887 | 4.6133 | NED | | ||
| 184.4 | 20.6437 | 4.6590 | B=17.9, R=16.3 | APM-N | | |
| 185.5 | 20.6146 | 4.6531 | NED | | ||
| 185.8 | 20.6433 | 4.6592 | NED | | ||
| 186.5 | 20.6238 | 4.6572 | NED | | ||
| 187.4 | 20.5878 | 4.6008 | B=22.3, R=20.0 | APM-N | | |
| 187.8 | 20.5875 | 4.6011 | NED | | ||
| 187.9 | 20.5979 | 4.5761 | NED | | ||
| 188.6 | 20.6304 | 4.5561 | NED | | ||
| 189.1 | 20.6358 | 4.5556 | NED | | ||
| 189.2 | 20.5977 | 4.5760 | B=22.4, R=19.8 | APM-N | | |
| 189.8 | 20.6917 | 4.6158 | NED | | ||
| 190.1 | 20.6263 | 4.6589 | NED | | ||
| 190.8 | 20.6583 | 4.6572 | NED | | ||
| 191.0 | 20.6140 | 4.5614 | B2=21.2, R1=20.2 | USNO-B1 | | |
| 191.2 | 20.6142 | 4.5611 | NED | | ||
| 191.3 | 20.6842 | 4.6369 | NED | | ||
| 192.2 | 20.6546 | 4.6589 | NED | | ||
| 193.0 | 20.5904 | 4.5858 | NED | | ||
| 193.4 | 20.6392 | 4.6617 | NED | | ||
| 193.5 | 20.6004 | 4.6450 | NED | | ||
| 194.0 | 20.5946 | 4.6375 | NED | | ||
| 195.3 | 20.6521 | 4.6606 | NED | | ||
| 195.4 | 20.6487 | 4.5544 | NED | | ||
| 195.5 | 20.6825 | 4.6414 | NED | | ||
| 195.7 | 20.6404 | 4.6622 | NED | | ||
| 197.9 | 20.6122 | 4.6558 | B=21.1, R=19.4 | APM-N | | |
| 198.1 | 20.6404 | 4.6628 | NED | | ||
| 198.1 | 20.6123 | 4.6559 | B1=20.1, B2=20.3, I=18.8, R1=19.2, R2=19.2 | USNO-B1 | | |
| 198.5 | 20.6946 | 4.6119 | NED | | ||
| 198.8 | 20.6121 | 4.6558 | NED | |
Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.
* RA/Dec in equinox J2000
Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example