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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: 1344131;
Presumed name: GRB 250821A
| BAT | 23h 53m 38.88s, -28° 37′ 04.8″ |
|---|---|
| position: | (358.412, -28.618 ± 180″) |
| XRT | 23h 53m 45.71s, -28° 39′ 13.3″ |
| position: | (358.44046, -28.65369 ± 2.9″) |
| UVOT | No position available. |
| Galactic NHI: | 1.57×1020 cm-2 |
| Galactic E(B-V): | 0.017 mag |
| Best RA: | 23h 53m 45.71s | = 358.44046 d |
|---|---|---|
| Best Dec: | -28° 39′ 13.3″ | = -28.65369 d |
| Gal Lat: | -77.17 | |
| Gal Long: | 22.76 | |
| Sun angle: | 149.13°, 10.1 hr West | |
Galaxies within 200 of XRT position
| RA* | Dec* | Redshift | Catalogue | Query | ||
|---|---|---|---|---|---|---|
| 10.3 | 358.4437 | -28.6531 | NED |  | ||
| 10.5 | 358.4437 | -28.6529 | B=21.2, R2=19.3 | SSS | | |
| 15.1 | 358.4422 | -28.6498 | B1=20.7, B2=20.9, R2=20.0 | USNO-B1 | | |
| 19.9 | 358.4350 | -28.6564 | NED | | ||
| 23.2 | 358.4371 | -28.6481 | NED | | ||
| 25.2 | 358.4467 | -28.6492 | NED | | ||
| 30.4 | 358.4333 | -28.6478 | NED | | ||
| 32.5 | 358.4433 | -28.6450 | NED | | ||
| 33.1 | 358.4321 | -28.6594 | NED | | ||
| 35.3 | 358.4467 | -28.6619 | NED | | ||
| 37.2 | 358.4292 | -28.6506 | NED | | ||
| 42.1 | 358.4404 | -28.6419 | NED | | ||
| 44.5 | 358.4325 | -28.6433 | NED | | ||
| 44.5 | 358.4382 | -28.6659 | I=18.4, R1=18.8 | USNO-B1 | | |
| 44.8 | 358.4323 | -28.6435 | B=22.5, R2=20.1, i=17.5 | SSS | | |
| 45.1 | 358.4325 | -28.6433 | I=18.0, R1=19.9, R2=19.8 | USNO-B1 | | |
| 46.4 | 358.4258 | -28.6531 | NED | | ||
| 47.3 | 358.4371 | -28.6667 | NED | | ||
| 47.7 | 358.4374 | -28.6667 | B=21.1, R2=19.1, i=18.6 | SSS | | |
| 51.1 | 358.4479 | -28.6664 | NED | | ||
| 52.3 | 358.4338 | -28.6669 | NED | | ||
| 53.0 | 358.4525 | -28.6434 | B=21.2, R2=19.6, i=18.3 | SSS | | |
| 60.1 | 358.4583 | -28.6597 | NED | | ||
| 60.5 | 358.4283 | -28.6406 | NED | | ||
| 63.8 | 358.4279 | -28.6675 | NED | | ||
| 64.3 | 358.4437 | -28.6361 | NED | | ||
| 64.9 | 358.4588 | -28.6456 | NED | | ||
| 68.3 | 358.4350 | -28.6353 | NED | | ||
| 69.1 | 358.4515 | -28.6371 | B2=19.4, R1=20.0, R2=18.6 | USNO-B1 | | |
| 71.0 | 358.4513 | -28.6364 | 0.060800 | Mag=18.16 | NED | |
| 71.1 | 358.4513 | -28.6364 | B=18.6, R2=17.6, i=17.0 | SSS | | |
| 71.3 | 358.4225 | -28.6658 | NED | | ||
| 72.4 | 358.4421 | -28.6736 | NED | | ||
| 74.0 | 358.4179 | -28.6597 | NED | | ||
| 74.9 | 358.4538 | -28.6365 | B2=21.2, R2=19.7 | USNO-B1 | | |
| 77.9 | 358.4525 | -28.6348 | B=22.2 | SSS | | |
| 80.7 | 358.4458 | -28.6756 | Mag=19.1 | NED | | |
| 81.1 | 358.4413 | -28.6311 | NED | | ||
| 81.1 | 358.4458 | -28.6757 | B=21.6, R2=19.6 | SSS | | |
| 81.9 | 358.4662 | -28.6512 | B2=21.6, R1=20.0 | USNO-B1 | | |
| 82.3 | 358.4400 | -28.6767 | NED | | ||
| 82.4 | 358.4504 | -28.6325 | NED | | ||
| 82.9 | 358.4367 | -28.6764 | NED | | ||
| 83.0 | 358.4175 | -28.6647 | Mag=16.4 | NED | | |
| 83.2 | 358.4174 | -28.6649 | B=18.0, R2=16.8, i=16.0 | SSS | | |
| 84.8 | 358.4254 | -28.6733 | NED | | ||
| 85.7 | 358.4175 | -28.6664 | B1=17.0, I=18.1, R1=16.2 | USNO-B1 | | |
| 87.5 | 358.4164 | -28.6417 | B1=21.0, B2=20.3, R2=24.5 | USNO-B1 | | |
| 87.8 | 358.4158 | -28.6425 | NED | | ||
| 88.4 | 358.4288 | -28.6314 | NED | | ||
| 89.2 | 358.4620 | -28.6376 | B1=20.7, B2=21.7, I=18.8 | USNO-B1 | | |
| 89.5 | 358.4542 | -28.6319 | B=21.3, R2=19.8 | SSS | | |
| 89.9 | 358.4325 | -28.6778 | NED | | ||
| 90.0 | 358.4542 | -28.6319 | NED | | ||
| 91.6 | 358.4179 | -28.6700 | NED | | ||
| 91.9 | 358.4647 | -28.6396 | B=22.5, R2=21.2 | SSS | | |
| 94.7 | 358.4133 | -28.6647 | Mag=16 | NED | | |
| 94.7 | 358.4654 | -28.6392 | NED | | ||
| 94.8 | 358.4687 | -28.6625 | B=21.5, R2=19.2 | SSS | | |
| 95.0 | 358.4688 | -28.6625 | NED | | ||
| 95.1 | 358.4109 | -28.6588 | B=22.1 | SSS | | |
| 98.0 | 358.4096 | -28.6517 | NED | | ||
| 100.9 | 358.4175 | -28.6733 | NED | | ||
| 104.5 | 358.4077 | -28.6500 | B1=18.5, B2=20.7, R2=19.4 | USNO-B1 | | |
| 104.8 | 358.4571 | -28.6286 | NED | | ||
| 105.2 | 358.4087 | -28.6628 | NED | | ||
| 106.7 | 358.4387 | -28.6242 | NED | | ||
| 109.1 | 358.4596 | -28.6789 | B1=20.2, B2=18.8, I=18.2, R1=19.0, R2=18.1 | USNO-B1 | | |
| 109.5 | 358.4744 | -28.6599 | B=21.2, R2=20.1 | SSS | | |
| 109.9 | 358.4598 | -28.6791 | B1=20.5, R1=18.9 | USNO-B1 | | |
| 110.0 | 358.4746 | -28.6597 | NED | | ||
| 110.2 | 358.4596 | -28.6793 | B=19.4, R2=18.4 | SSS | | |
| 110.2 | 358.4596 | -28.6792 | 0.060200 | Mag=19.13 | NED | |
| 110.4 | 358.4746 | -28.6600 | B2=20.7, R2=19.9 | USNO-B1 | | |
| 110.6 | 358.4608 | -28.6289 | NED | | ||
| 112.3 | 358.4611 | -28.6283 | B=22.4, R2=20.8 | SSS | | |
| 113.0 | 358.4204 | -28.6278 | NED | | ||
| 113.8 | 358.4598 | -28.6804 | B1=19.8, R2=20.2 | USNO-B1 | | |
| 116.1 | 358.4117 | -28.6333 | NED | | ||
| 118.6 | 358.4603 | -28.6257 | B=22.1 | SSS | | |
| 120.8 | 358.4075 | -28.6708 | NED | | ||
| 122.9 | 358.4033 | -28.6644 | NED | | ||
| 123.6 | 358.4225 | -28.6233 | NED | | ||
| 123.8 | 358.4496 | -28.6203 | NED | | ||
| 124.0 | 358.4496 | -28.6202 | B2=21.7, R2=20.2 | USNO-B1 | | |
| 124.9 | 358.4541 | -28.6863 | B=22.2 | SSS | | |
| 125.3 | 358.4013 | -28.6480 | B=22.5, R2=21.0 | SSS | | |
| 125.6 | 358.4758 | -28.6375 | NED | | ||
| 127.6 | 358.4362 | -28.6889 | NED | | ||
| 127.8 | 358.4054 | -28.6358 | 0.000000 | Mag=20.0 | NED | |
| 130.0 | 358.4262 | -28.6875 | Mag=19.5 | NED | | |
| 130.0 | 358.4004 | -28.6456 | NED | | ||
| 130.1 | 358.4204 | -28.6853 | NED | | ||
| 130.4 | 358.4450 | -28.6897 | NED | | ||
| 132.1 | 358.4725 | -28.6303 | NED | | ||
| 132.6 | 358.4729 | -28.6303 | NED | | ||
| 133.1 | 358.4008 | -28.6408 | NED | | ||
| 133.7 | 358.4563 | -28.6881 | NED | | ||
| 135.6 | 358.4833 | -28.6517 | B=22.3 | SSS | | |
| 135.9 | 358.4470 | -28.6910 | B=20.4, R2=19.8 | SSS | | |
| 136.0 | 358.4768 | -28.6740 | B=22.1, R2=20.4 | SSS | | |
| 136.1 | 358.4467 | -28.6911 | Mag=20.09 | NED | | |
| 137.8 | 358.4825 | -28.6636 | NED | | ||
| 138.1 | 358.4837 | -28.6575 | NED | | ||
| 139.6 | 358.4425 | -28.6150 | NED | | ||
| 140.6 | 358.3963 | -28.6500 | NED | | ||
| 141.7 | 358.4346 | -28.6147 | NED | | ||
| 142.7 | 358.4250 | -28.6164 | NED | | ||
| 144.1 | 358.4463 | -28.6139 | NED | | ||
| 145.5 | 358.4862 | -28.6517 | NED | | ||
| 145.5 | 358.4865 | -28.6516 | B1=15.4, B2=15.5, I=13.6, R1=14.0, R2=14.1 | USNO-B1 | | |
| 146.6 | 358.3963 | -28.6661 | NED | | ||
| 146.9 | 358.4842 | -28.6394 | Mag=18.9 | NED | | |
| 148.5 | 358.4858 | -28.6436 | NED | | ||
| 148.7 | 358.3933 | -28.6533 | NED | | ||
| 149.5 | 358.4083 | -28.6231 | Mag=18.8 | NED | | |
| 149.6 | 358.4087 | -28.6229 | B1=20.7, B2=20.7, I=18.4, R1=19.0, R2=18.9 | USNO-B1 | | |
| 149.7 | 358.4085 | -28.6230 | B=20.8, R2=19.1, i=17.9 | SSS | | |
| 149.8 | 358.3942 | -28.6625 | NED | | ||
| 150.1 | 358.4392 | -28.6119 | NED | | ||
| 150.2 | 358.4329 | -28.6950 | 0.187400 | Mag=19.23 | NED | |
| 150.3 | 358.3933 | -28.6472 | NED | | ||
| 150.4 | 358.4329 | -28.6949 | B=19.5, R2=17.8, i=17.0 | SSS | | |
| 151.0 | 358.4083 | -28.6226 | I=18.1, R1=19.4 | USNO-B1 | | |
| 151.4 | 358.4262 | -28.6939 | NED | | ||
| 153.2 | 358.4797 | -28.6287 | B=21.6, R2=20.6 | SSS | | |
| 153.5 | 358.4890 | -28.6555 | B=22.1 | SSS | | |
| 153.7 | 358.4800 | -28.6289 | NED | | ||
| 154.0 | 358.4439 | -28.6964 | B2=20.4, R1=18.9 | USNO-B1 | | |
| 154.1 | 358.4446 | -28.6964 | Mag=18.4 | NED | | |
| 154.2 | 358.4445 | -28.6964 | B=19.9, R2=18.3, i=18.2 | SSS | | |
| 155.3 | 358.3913 | -28.6575 | 0.058000 | Mag=18.37 | NED | |
| 155.3 | 358.3915 | -28.6575 | B=18.5, R2=17.1, i=16.3 | SSS | | |
| 155.6 | 358.4671 | -28.6900 | Mag=19.3 | NED | | |
| 156.4 | 358.4821 | -28.6303 | NED | | ||
| 157.7 | 358.4050 | -28.6228 | NED | | ||
| 157.9 | 358.4033 | -28.6831 | NED | | ||
| 158.4 | 358.4521 | -28.6964 | NED | | ||
| 159.1 | 358.4108 | -28.6181 | NED | | ||
| 160.0 | 358.4712 | -28.6186 | NED | | ||
| 162.0 | 358.4917 | -28.6542 | NED | | ||
| 162.8 | 358.4246 | -28.6106 | NED | | ||
| 163.5 | 358.3888 | -28.6533 | NED | | ||
| 164.4 | 358.3896 | -28.6633 | NED | | ||
| 164.5 | 358.4916 | -28.6625 | B1=18.7, B2=20.4, R2=18.9 | USNO-B1 | | |
| 164.6 | 358.4702 | -28.6912 | B2=20.7, R1=19.8, R2=19.7 | USNO-B1 | | |
| 164.9 | 358.4700 | -28.6914 | NED | | ||
| 165.1 | 358.4701 | -28.6915 | B=22.1, R2=19.8 | SSS | | |
| 165.1 | 358.4887 | -28.6711 | NED | | ||
| 165.3 | 358.4726 | -28.6899 | B=22.0, R2=20.4 | SSS | | |
| 165.3 | 358.3904 | -28.6403 | NED | | ||
| 165.3 | 358.4725 | -28.6900 | NED | | ||
| 166.2 | 358.4925 | -28.6467 | NED | | ||
| 167.8 | 358.3954 | -28.6783 | NED | | ||
| 168.1 | 358.4033 | -28.6203 | NED | | ||
| 168.4 | 358.4032 | -28.6202 | B=22.4 | SSS | | |
| 169.0 | 358.4200 | -28.6103 | NED | | ||
| 169.1 | 358.4856 | -28.6285 | B=22.0, R2=21.2 | SSS | | |
| 169.3 | 358.4216 | -28.6097 | B2=20.3, R1=20.1, R2=20.0 | USNO-B1 | | |
| 170.2 | 358.4931 | -28.6637 | B=20.5, R2=19.8 | SSS | | |
| 170.4 | 358.4942 | -28.6553 | NED | | ||
| 170.8 | 358.4338 | -28.6067 | NED | | ||
| 171.1 | 358.4933 | -28.6639 | Mag=20.29 | NED | | |
| 171.5 | 358.3983 | -28.6236 | NED | | ||
| 172.3 | 358.3941 | -28.6285 | B=19.9, R2=19.2 | SSS | | |
| 172.4 | 358.3946 | -28.6278 | Mag=19.61 | NED | | |
| 173.6 | 358.4712 | -28.6136 | NED | | ||
| 174.2 | 358.3937 | -28.6281 | B2=19.6, R2=23.7 | USNO-B1 | | |
| 174.3 | 358.4883 | -28.6300 | NED | | ||
| 174.4 | 358.4925 | -28.6381 | NED | | ||
| 174.9 | 358.4458 | -28.6053 | NED | | ||
| 175.4 | 358.4459 | -28.6052 | B=18.3, R2=15.5, i=15.3 | SSS | | |
| 175.4 | 358.3850 | -28.6553 | NED | | ||
| 176.9 | 358.4917 | -28.6339 | NED | | ||
| 176.9 | 358.4464 | -28.6048 | B1=20.0, I=15.3 | USNO-B1 | | |
| 177.4 | 358.4783 | -28.6172 | NED | | ||
| 177.8 | 358.3910 | -28.6301 | B=20.1, R2=18.1, i=17.2 | SSS | | |
| 178.1 | 358.3908 | -28.6300 | Mag=18.0 | NED | | |
| 178.7 | 358.4470 | -28.6044 | B=20.8, R2=19.7 | SSS | | |
| 178.7 | 358.3838 | -28.6522 | NED | | ||
| 179.0 | 358.3839 | -28.6514 | R1=19.2, R2=19.7 | USNO-B1 | | |
| 179.6 | 358.4956 | -28.6416 | B1=20.9, B2=21.4, I=18.5 | USNO-B1 | | |
| 180.0 | 358.4850 | -28.6225 | NED | | ||
| 180.3 | 358.4854 | -28.6228 | NED | | ||
| 181.0 | 358.4925 | -28.6744 | NED | | ||
| 181.3 | 358.3833 | -28.6589 | NED | | ||
| 181.3 | 358.3975 | -28.6203 | NED | | ||
| 181.9 | 358.4108 | -28.6103 | 0.000000 | Mag=20.7 | NED | |
| 182.4 | 358.4982 | -28.6552 | B=21.6, R2=19.9 | SSS | | |
| 182.4 | 358.4192 | -28.6067 | Mag=19.5 | NED | | |
| 182.4 | 358.4442 | -28.7042 | NED | | ||
| 183.0 | 358.4887 | -28.6258 | NED | | ||
| 183.1 | 358.3825 | -28.6538 | B=21.0, R2=19.9 | SSS | | |
| 183.8 | 358.4258 | -28.6042 | NED | | ||
| 185.3 | 358.4858 | -28.6864 | NED | | ||
| 185.6 | 358.4325 | -28.7047 | NED | | ||
| 185.7 | 358.4443 | -28.7052 | B=21.2, R2=20.1 | SSS | | |
| 186.4 | 358.4600 | -28.6047 | NED | | ||
| 187.3 | 358.4021 | -28.6142 | NED | | ||
| 188.9 | 358.5000 | -28.6564 | NED | | ||
| 191.1 | 358.4821 | -28.6922 | B1=16.4, B2=16.6, I=15.2, R1=15.5, R2=15.4 | USNO-B1 | | |
| 191.2 | 358.4821 | -28.6922 | NED | | ||
| 191.9 | 358.4337 | -28.6007 | B1=21.0, R2=23.5 | USNO-B1 | | |
| 192.7 | 358.3800 | -28.6458 | NED | | ||
| 193.2 | 358.3817 | -28.6689 | NED | | ||
| 196.7 | 358.4542 | -28.7069 | NED | | ||
| 197.7 | 358.4954 | -28.6800 | B=22.4 | SSS | | |
| 197.7 | 358.3892 | -28.6219 | NED | | ||
| 198.0 | 358.3808 | -28.6364 | NED | | ||
| 198.2 | 358.4958 | -28.6281 | NED | | ||
| 198.8 | 358.3781 | -28.6613 | B=21.0, R2=19.7 | SSS | | |
| 198.8 | 358.3779 | -28.6614 | 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