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Swift Trigger: 1205319

Presumed name: GRB 231230A

Back to trigger list.

BAT 16h 20m 47.28s, +58° 07′ 12.0″
position:(245.197, +58.120 ± 180″)
XRT 16h 20m 51.24s, +58° 07′ 35.7″
position:(245.21352, 58.12658 ± 1.9″)
UVOT No position available.
Galactic NHI:1.27×1020 cm-2
Galactic E(B-V):0.012 mag
Best RA:16h 20m 51.24s= 245.21352 d
Best Dec:+58° 07′ 35.7″= 58.12658 d
Gal Lat:42.4
Gal Long:88.45
Sun angle:85.90°, 2.2 hr West

GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

Sun angle for this burst.

UVOT data

No UVOT images are currently available.


SPER results page for this trigger.

Image of the SPER data

There are 11 SPER messages, and 1 objects have been found

See the SPER page for details of how this position was produced.

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)RA DecDate reportedSource MiscQuery

Catalogue Searches. Searched 200′ around XRT position

Click on the distance to view the full details (not available for sources from the SSS catalogue). Click on the column headers to sort the table on that column (click again to invert sort order).


RA*Dec*SIMBAD name Query
50.0245.238558.1310SDSS J162057.22+580751.5G=19.083839, g=19.5878, i=19.4610, r=19.5011, u=20.1438, z=19.4958Query vizier around this object
86.9245.240058.1069LEDA 2574626Query vizier around this object
90.1245.244258.1075LEDA 2574633Query vizier around this object

There are 3 SIMBAD objects within the position error. The full list is here.

* RA/Dec in equinox J2000

X-ray sources

RA*Dec* Source table2Observatory Query

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

1Energy band for count-rate is mission specific.


RA*Dec*Redshift CatalogueQuery
5.9245.212958.1283Mag=22.3NEDQuery vizier around this object
5.9245.213058.1282R=22.2, g=22.7, i=21.9, u=23.9, z=21.5SDSSQuery vizier around this object
11.0245.210858.1239Mag=23.9NEDQuery vizier around this object
15.3245.216858.1227R=25.7, g=22.1, i=25.0, u=26.6, z=24.2SDSSQuery vizier around this object
17.3245.220058.1300Mag=23.4NEDQuery vizier around this object
24.3245.206058.1321R=23.5, g=24.2, i=21.9, u=23.7, z=22.5SDSSQuery vizier around this object
24.9245.224658.1303R=22.5, g=23.6, i=22.7, u=23.7, z=21.6SDSSQuery vizier around this object
25.0245.224658.1303Mag=23.0NEDQuery vizier around this object
25.8245.201358.1297Mag=24.5NEDQuery vizier around this object
28.6245.199158.1243R=22.1, g=23.4, i=20.9, u=27.5, z=22.4SDSSQuery vizier around this object


There are 556 galaxies within the position error. The full list is here.

* 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


RA*Dec* CatalogueQuery
11.1245.210758.1239I=21.3, R=22.6, g=23.9, u=24.8, z=20.4SDSSQuery vizier around this object
17.3245.220158.1299I=21.9, R=22.3, g=23.4, u=25.3, z=21.2SDSSQuery vizier around this object
25.8245.201258.1296I=22.2, R=22.7, g=24.3, u=23.8, z=21.7SDSSQuery vizier around this object
31.2245.200258.1316I=23.8, R=22.8, g=24.9, u=23.9, z=22.0SDSSQuery vizier around this object
35.1245.232058.1263B1=21.0, B2=20.0, I=18.7, R1=19.6, R2=19.2USNO-B1Query vizier around this object
37.8245.207858.1366I=21.8, R=25.1, g=25.1, u=24.8, z=22.7SDSSQuery vizier around this object
39.5245.233858.1289I=18.9, R=20.1, g=21.3, u=23.6, z=18.3SDSSQuery vizier around this object
42.1245.235458.1249I=19.5, R=19.9, g=21.1, u=22.7, z=19.2SDSSQuery vizier around this object
44.7245.234458.1209B2=20.6, I=18.5, R1=20.0, R2=19.7USNO-B1Query vizier around this object
44.7245.194058.1197I=20.7, R=20.9, g=21.2, u=22.1, z=20.5SDSSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 213 stars within the position error. The full list is here.

* 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.