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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: 1069169;
Presumed name: GRB 210818A
| BAT | 09h 56m 31.44s, -87° 01′ 51.6″ |
|---|---|
| position: | (149.131, -87.031 ± 180″) |
| XRT | 09h 55m 26.52s, -87° 01′ 29.6″ |
| position: | (148.8605, -87.0249 ± 1.9″) |
| UVOT | 09h 55m 28.13s, -87° 01′ 28.6″ |
| position: | (148.8672, -87.0246 ± 0.6″) |
| Galactic NHI: | 1.04×1021 cm-2 |
| Galactic E(B-V): | 0.212 mag |
| Best RA: | 09h 55m 28.13s | = 148.8672 d |
|---|---|---|
| Best Dec: | -87° 01′ 28.6″ | = -87.0246 d |
| Gal Lat: | -24.97 | |
| Gal Long: | 300.65 | |
| Sun angle: | not found | |
Galaxies within 200 of XRT position
| RA* | Dec* | Redshift | Catalogue | Query | ||
|---|---|---|---|---|---|---|
| 4.3 | 148.8558 | -87.0236 | NED |  | ||
| 19.3 | 148.8629 | -87.0300 | NED | | ||
| 31.4 | 148.7021 | -87.0231 | NED | | ||
| 33.3 | 148.8350 | -87.0336 | NED | | ||
| 33.8 | 149.0346 | -87.0211 | NED | | ||
| 34.2 | 149.0500 | -87.0242 | NED | | ||
| 34.7 | 149.0333 | -87.0214 | I=17.9, R2=19.9 | USNO-B1 | | |
| 40.0 | 148.8346 | -87.0136 | NED | | ||
| 40.1 | 148.6529 | -87.0236 | NED | | ||
| 43.4 | 148.6413 | -87.0275 | NED | | ||
| 46.9 | 148.9696 | -87.0364 | NED | | ||
| 47.6 | 148.6954 | -87.0147 | NED | | ||
| 51.7 | 148.9567 | -87.0383 | NED | | ||
| 54.1 | 149.0321 | -87.0122 | NED | | ||
| 54.5 | 149.1404 | -87.0194 | NED | | ||
| 56.8 | 148.6396 | -87.0350 | NED | | ||
| 57.5 | 148.6517 | -87.0133 | NED | | ||
| 58.8 | 149.1817 | -87.0244 | NED | | ||
| 59.6 | 148.8908 | -87.0411 | NED | | ||
| 60.7 | 148.7463 | -87.0089 | NED | | ||
| 63.2 | 148.5292 | -87.0253 | NED | | ||
| 63.2 | 149.0946 | -87.0117 | NED | | ||
| 65.6 | 149.1979 | -87.0308 | NED | | ||
| 67.0 | 149.1265 | -87.0374 | B2=19.2, I=17.8, R1=18.3, R2=18.3 | USNO-B1 | | |
| 67.2 | 148.8225 | -87.0061 | NED | | ||
| 67.3 | 149.1304 | -87.0375 | NED | | ||
| 68.5 | 149.1904 | -87.0156 | NED | | ||
| 68.5 | 149.2192 | -87.0194 | NED | | ||
| 68.9 | 148.5517 | -87.0147 | NED | | ||
| 69.2 | 149.0142 | -87.0069 | NED | | ||
| 69.7 | 149.0099 | -87.0072 | B2=16.4, I=14.9, R1=15.6, R2=15.5 | USNO-B1 | | |
| 69.9 | 149.2226 | -87.0298 | B2=21.7, R2=20.4 | USNO-B1 | | |
| 70.6 | 148.6129 | -87.0100 | NED | | ||
| 71.6 | 148.6704 | -87.0075 | NED | | ||
| 72.5 | 148.7704 | -87.0050 | NED | | ||
| 73.0 | 149.2533 | -87.0278 | NED | | ||
| 75.5 | 148.7071 | -87.0439 | NED | | ||
| 76.3 | 148.5588 | -87.0386 | NED | | ||
| 80.8 | 148.4379 | -87.0272 | NED | | ||
| 82.0 | 148.4621 | -87.0333 | NED | | ||
| 82.8 | 149.1067 | -87.0439 | NED | | ||
| 84.4 | 148.8912 | -87.0481 | NED | | ||
| 85.5 | 148.4619 | -87.0366 | I=17.9, R2=19.2 | USNO-B1 | | |
| 85.6 | 148.4696 | -87.0364 | NED | | ||
| 87.6 | 148.5839 | -87.0446 | B2=19.3, I=17.9, R1=18.5, R2=18.9 | USNO-B1 | | |
| 89.1 | 148.5846 | -87.0444 | NED | | ||
| 89.4 | 148.8025 | -87.0000 | NED | | ||
| 90.8 | 148.5487 | -87.0056 | NED | | ||
| 92.1 | 148.3917 | -87.0181 | NED | | ||
| 93.0 | 149.1129 | -87.0022 | NED | | ||
| 93.1 | 149.2417 | -87.0075 | NED | | ||
| 93.5 | 149.0513 | -87.0006 | NED | | ||
| 94.1 | 148.6867 | -87.0003 | NED | | ||
| 94.6 | 149.3671 | -87.0289 | NED | | ||
| 94.7 | 148.6865 | -87.0002 | B2=19.0, I=17.9, R1=18.1, R2=18.6 | USNO-B1 | | |
| 95.7 | 149.3676 | -87.0288 | B2=16.5, I=15.0, R1=15.6, R2=15.6 | USNO-B1 | | |
| 97.6 | 148.3492 | -87.0281 | NED | | ||
| 98.2 | 148.3751 | -87.0355 | B2=20.8, I=17.1, R1=18.7, R2=19.1 | USNO-B1 | | |
| 99.3 | 149.3500 | -87.0361 | NED | | ||
| 99.5 | 148.3429 | -87.0316 | I=17.9, R1=19.7, R2=19.4 | USNO-B1 | | |
| 100.0 | 149.2562 | -87.0436 | NED | | ||
| 100.0 | 148.9642 | -87.0519 | NED | | ||
| 100.1 | 148.3725 | -87.0353 | NED | | ||
| 100.9 | 148.6820 | -86.9985 | B2=21.3, I=17.7, R2=19.8 | USNO-B1 | | |
| 100.9 | 148.3425 | -87.0314 | NED | | ||
| 101.4 | 148.6738 | -86.9985 | I=17.9, R2=20.7 | USNO-B1 | | |
| 101.4 | 148.8175 | -86.9967 | NED | | ||
| 102.7 | 149.3021 | -87.0422 | NED | | ||
| 102.9 | 148.3731 | -87.0117 | B2=20.5, R2=19.8 | USNO-B1 | | |
| 103.3 | 148.3726 | -87.0115 | B2=21.0, R1=20.5, R2=20.8 | USNO-B1 | | |
| 104.1 | 148.6831 | -86.9975 | I=17.4, R2=20.4 | USNO-B1 | | |
| 105.1 | 148.6767 | -86.9972 | NED | | ||
| 105.2 | 149.4017 | -87.0339 | NED | | ||
| 105.5 | 148.7596 | -87.0533 | NED | | ||
| 106.6 | 149.1054 | -87.0517 | NED | | ||
| 108.5 | 148.3687 | -87.0403 | NED | | ||
| 108.7 | 149.1088 | -86.9972 | NED | | ||
| 109.6 | 149.3783 | -87.0097 | NED | | ||
| 110.6 | 149.2575 | -87.0478 | NED | | ||
| 111.2 | 148.3083 | -87.0353 | NED | | ||
| 111.6 | 148.2983 | -87.0153 | NED | | ||
| 112.5 | 148.4829 | -87.0006 | NED | | ||
| 113.4 | 148.4952 | -86.9998 | B2=19.8, R2=20.1 | USNO-B1 | | |
| 114.8 | 148.5021 | -87.0503 | NED | | ||
| 115.9 | 148.2600 | -87.0314 | NED | | ||
| 116.5 | 148.4936 | -86.9988 | B2=20.7, I=18.8, R1=19.1, R2=19.2 | USNO-B1 | | |
| 117.8 | 148.3875 | -87.0458 | NED | | ||
| 119.4 | 148.7887 | -87.0579 | R1=17.9, R2=18.8 | USNO-B1 | | |
| 120.2 | 148.9640 | -86.9920 | R1=19.1, R2=20.5 | USNO-B1 | | |
| 120.5 | 148.8017 | -87.0578 | NED | | ||
| 120.7 | 149.4571 | -87.0111 | NED | | ||
| 120.8 | 149.3308 | -87.0481 | NED | | ||
| 123.0 | 149.0908 | -86.9925 | NED | | ||
| 123.6 | 148.7200 | -86.9911 | NED | | ||
| 124.9 | 149.1413 | -86.9931 | NED | | ||
| 124.9 | 149.5325 | -87.0281 | NED | | ||
| 126.2 | 148.4281 | -86.9980 | B2=19.5, I=17.9, R1=19.1, R2=19.0 | USNO-B1 | | |
| 126.7 | 149.2404 | -87.0541 | B2=21.5, I=17.8, R1=19.2, R2=19.5 | USNO-B1 | | |
| 127.0 | 148.4238 | -86.9981 | NED | | ||
| 127.3 | 149.5087 | -87.0367 | NED | | ||
| 128.8 | 148.2883 | -87.0053 | NED | | ||
| 131.5 | 149.2275 | -87.0561 | NED | | ||
| 132.1 | 148.4433 | -86.9953 | NED | | ||
| 132.8 | 148.2033 | -87.0381 | NED | | ||
| 133.3 | 148.4875 | -87.0561 | NED | | ||
| 134.4 | 149.2083 | -86.9917 | NED | | ||
| 137.2 | 149.6004 | -87.0267 | NED | | ||
| 137.5 | 148.1429 | -87.0181 | NED | | ||
| 137.9 | 148.1575 | -87.0353 | NED | | ||
| 138.0 | 149.4187 | -87.0503 | NED | | ||
| 138.6 | 149.4209 | -87.0503 | B2=20.1, I=16.4, R1=17.8, R2=18.3 | USNO-B1 | | |
| 138.6 | 149.6019 | -87.0266 | B2=17.4, I=16.7, R1=16.6, R2=16.6 | USNO-B1 | | |
| 138.9 | 148.2302 | -87.0046 | B2=21.0, R2=18.2 | USNO-B1 | | |
| 139.0 | 148.3054 | -87.0500 | NED | | ||
| 139.9 | 148.2557 | -87.0022 | B2=21.0, I=17.1 | USNO-B1 | | |
| 141.4 | 148.2121 | -87.0050 | NED | | ||
| 142.0 | 149.5888 | -87.0372 | NED | | ||
| 142.8 | 149.5888 | -87.0371 | R1=20.0, R2=19.8 | USNO-B1 | | |
| 143.3 | 148.1200 | -87.0339 | NED | | ||
| 143.3 | 149.5709 | -87.0101 | B2=21.0, I=17.9, R1=19.4, R2=18.9 | USNO-B1 | | |
| 143.6 | 149.5971 | -87.0122 | NED | | ||
| 144.7 | 148.2007 | -87.0040 | B2=19.6, R1=17.5, R2=17.1 | USNO-B1 | | |
| 146.6 | 149.0258 | -86.9847 | NED | | ||
| 147.2 | 148.4417 | -86.9903 | NED | | ||
| 148.0 | 148.8525 | -86.9836 | NED | | ||
| 150.1 | 149.5504 | -87.0031 | NED | | ||
| 150.2 | 148.0638 | -87.0264 | NED | | ||
| 150.3 | 148.2170 | -87.0000 | B2=19.6, I=17.1, R2=18.3 | USNO-B1 | | |
| 150.7 | 148.1825 | -87.0028 | NED | | ||
| 150.9 | 148.1512 | -87.0051 | B2=19.6, I=17.9, R1=18.0, R2=18.3 | USNO-B1 | | |
| 151.2 | 148.0767 | -87.0158 | NED | | ||
| 151.3 | 149.5662 | -87.0461 | NED | | ||
| 152.0 | 148.1444 | -87.0051 | B2=20.4, I=17.1, R2=18.8 | USNO-B1 | | |
| 154.3 | 148.3117 | -86.9931 | NED | | ||
| 155.6 | 148.9392 | -86.9817 | NED | | ||
| 155.7 | 149.5458 | -86.9997 | NED | | ||
| 157.4 | 148.5437 | -86.9842 | NED | | ||
| 157.4 | 149.3579 | -87.0603 | NED | | ||
| 157.7 | 148.0354 | -87.0322 | NED | | ||
| 158.0 | 148.1038 | -87.0436 | NED | | ||
| 158.2 | 149.6817 | -87.0131 | NED | | ||
| 158.5 | 149.5498 | -86.9994 | I=18.1, R1=19.2 | USNO-B1 | | |
| 159.5 | 148.2271 | -87.0542 | NED | | ||
| 160.0 | 149.1517 | -87.0667 | I=17.8, R1=19.1, R2=19.9 | USNO-B1 | | |
| 160.0 | 149.1508 | -87.0667 | NED | | ||
| 161.5 | 149.4262 | -87.0589 | NED | | ||
| 161.7 | 149.6700 | -87.0081 | NED | | ||
| 162.8 | 149.7125 | -87.0358 | NED | | ||
| 163.0 | 148.0479 | -87.0406 | NED | | ||
| 163.4 | 148.0000 | -87.0192 | NED | | ||
| 164.6 | 149.7404 | -87.0311 | NED | | ||
| 166.1 | 148.5437 | -86.9817 | NED | | ||
| 166.6 | 149.1985 | -87.0678 | R1=20.1, R2=19.7 | USNO-B1 | | |
| 166.6 | 148.5464 | -86.9816 | B2=21.6, R1=19.2, R2=20.5 | USNO-B1 | | |
| 167.7 | 148.0183 | -87.0097 | NED | | ||
| 167.8 | 148.6683 | -87.0700 | NED | | ||
| 168.1 | 148.2183 | -86.9925 | NED | | ||
| 169.0 | 148.5496 | -87.0686 | NED | | ||
| 169.4 | 148.2300 | -86.9913 | B2=21.3, R1=19.0, R2=19.8 | USNO-B1 | | |
| 171.0 | 149.2827 | -87.0671 | B2=20.6, R1=19.9, R2=20.2 | USNO-B1 | | |
| 171.5 | 148.6217 | -86.9786 | NED | | ||
| 171.6 | 148.6235 | -86.9789 | B2=19.2, I=18.5, R1=18.3, R2=18.7 | USNO-B1 | | |
| 171.8 | 148.1821 | -87.0567 | NED | | ||
| 172.4 | 149.2458 | -87.0683 | NED | | ||
| 172.9 | 148.3292 | -86.9856 | NED | | ||
| 173.0 | 147.9617 | -87.0350 | NED | | ||
| 173.2 | 148.6896 | -86.9775 | NED | | ||
| 173.3 | 149.0133 | -87.0722 | NED | | ||
| 173.3 | 149.6817 | -87.0019 | NED | | ||
| 174.3 | 149.7842 | -87.0161 | NED | | ||
| 175.1 | 148.0696 | -87.0506 | NED | | ||
| 175.4 | 148.0838 | -86.9981 | NED | | ||
| 176.0 | 148.9308 | -87.0733 | NED | | ||
| 176.2 | 147.9529 | -87.0131 | NED | | ||
| 176.4 | 148.7667 | -86.9758 | NED | | ||
| 176.5 | 148.9492 | -86.9758 | NED | | ||
| 177.6 | 148.7611 | -87.0740 | B2=21.6, I=18.4, R2=19.8 | USNO-B1 | | |
| 177.9 | 149.0021 | -86.9758 | NED | | ||
| 178.3 | 149.1258 | -87.0722 | NED | | ||
| 178.7 | 149.5842 | -86.9919 | NED | | ||
| 179.8 | 148.2488 | -86.9864 | NED | | ||
| 179.9 | 149.1317 | -87.0728 | NED | | ||
| 179.9 | 149.6633 | -86.9967 | NED | | ||
| 180.4 | 148.7467 | -87.0744 | NED | | ||
| 181.5 | 149.5898 | -86.9918 | B2=21.3, R1=20.1, R2=20.6 | USNO-B1 | | |
| 181.6 | 148.5263 | -87.0719 | NED | | ||
| 181.8 | 149.7733 | -87.0428 | I=17.9, R2=19.4 | USNO-B1 | | |
| 181.9 | 148.0983 | -86.9939 | NED | | ||
| 181.9 | 148.0125 | -87.0492 | NED | | ||
| 182.9 | 149.7433 | -87.0022 | NED | | ||
| 183.0 | 149.4830 | -86.9858 | B2=21.4, R1=19.4, R2=19.4 | USNO-B1 | | |
| 184.3 | 149.7896 | -87.0431 | NED | | ||
| 184.7 | 147.9529 | -87.0056 | NED | | ||
| 184.9 | 148.5664 | -86.9759 | B2=21.3, R2=20.1 | USNO-B1 | | |
| 185.2 | 147.9129 | -87.0111 | NED | | ||
| 185.6 | 149.2962 | -86.9781 | NED | | ||
| 185.7 | 149.7753 | -87.0455 | B2=20.4, I=17.7, R1=18.6, R2=17.7 | USNO-B1 | | |
| 185.9 | 147.8728 | -87.0316 | B2=17.8, I=17.4, R1=17.1, R2=17.2 | USNO-B1 | | |
| 186.4 | 149.2537 | -87.0725 | NED | | ||
| 186.8 | 149.0618 | -86.9741 | B2=21.7, R1=19.5, R2=19.5 | USNO-B1 | | |
| 186.8 | 148.6917 | -86.9736 | NED | | ||
| 187.4 | 147.8721 | -87.0317 | NED | | ||
| 187.4 | 147.8622 | -87.0202 | B2=20.3, I=18.9, R1=20.3 | USNO-B1 | | |
| 188.2 | 148.6725 | -87.0758 | NED | | ||
| 189.2 | 148.4379 | -87.0722 | NED | | ||
| 189.4 | 147.9108 | -87.0425 | NED | | ||
| 189.5 | 149.8417 | -87.0106 | NED | | ||
| 189.7 | 147.9721 | -87.0000 | NED | | ||
| 190.1 | 149.8600 | -87.0367 | NED | | ||
| 190.7 | 149.2729 | -87.0734 | B2=20.0, I=17.6, R1=19.3, R2=19.0 | USNO-B1 | | |
| 191.0 | 149.2717 | -87.0733 | NED | | ||
| 191.0 | 149.1475 | -87.0756 | NED | | ||
| 192.0 | 149.5325 | -86.9842 | NED | | ||
| 192.4 | 149.8804 | -87.0156 | NED | | ||
| 192.5 | 147.8421 | -87.0197 | NED | | ||
| 193.1 | 149.7571 | -86.9978 | NED | | ||
| 193.3 | 148.1813 | -86.9847 | NED | | ||
| 193.7 | 149.8058 | -87.0022 | NED | | ||
| 194.7 | 149.1012 | -87.0772 | NED | | ||
| 194.8 | 149.3583 | -86.9769 | NED | | ||
| 194.9 | 148.9425 | -86.9706 | NED | | ||
| 196.0 | 148.5592 | -86.9725 | NED | | ||
| 196.3 | 149.0154 | -86.9706 | NED | | ||
| 196.6 | 148.8504 | -87.0792 | NED | | ||
| 197.2 | 149.8017 | -87.0506 | NED | | ||
| 198.2 | 147.8042 | -87.0306 | I=16.4, R2=16.5 | USNO-B1 | | |
| 198.4 | 147.9383 | -87.0517 | NED | | ||
| 199.0 | 149.9271 | -87.0306 | NED | | ||
| 199.2 | 147.8071 | -87.0308 | NED | | ||
| 199.7 | 147.8983 | -87.0483 | NED | | ||
| 199.9 | 149.5000 | -87.0696 | R1=19.2, R2=19.8 | USNO-B1 | |
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