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Swift Trigger: 1205744

Presumed name: GRB 240101B

Back to trigger list.

BAT 23h 28m 12.48s, +51° 38′ 42.0″
position:(352.052, +51.645 ± 180″)
XRT 23h 28m 23.18s, +51° 38′ 16.4″
position:(352.0966, 51.6379 ± 5.1″)
UVOT No position available.
Galactic NHI:1.80×1021 cm-2
Galactic E(B-V):0.246 mag
Best RA:23h 28m 23.18s= 352.0966 d
Best Dec:+51° 38′ 16.4″= 51.6379 d
Gal Lat:-9.15
Gal Long:110.06
Sun angle:96.68°, -4.7 hr East of Sun

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 3 SPER messges, but no object has been found.

See the SPER page for details of how the SPER image is searched for objects.

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
32.0352.110751.63642MASX J23282660+5138115G=19.732115, H=12.052, J=12.768, K=11.612Query vizier around this object
111.5352.052151.6519LEDA 2397669Query vizier around this object
153.1352.058051.6730TYC 3649-826-1B=13.35, G=11.450421, H=8.6, J=9.342, K=8.459, V=12.02Query vizier around this object
189.5352.181151.6337TYC 3649-618-1B=13.48, G=12.065500, V=12.35Query vizier around this object

There are 4 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
19.3352.094651.6328NEDQuery vizier around this object
25.4352.107951.6389NEDQuery vizier around this object
30.9352.106751.6320B2=19.8, R2=17.7USNO-B1Query vizier around this object
31.1352.106751.6436NEDQuery vizier around this object
31.5352.106751.6317NEDQuery vizier around this object
31.7352.093351.6294NEDQuery vizier around this object
32.1352.110851.63640.045445Mag=11.5NEDQuery vizier around this object
32.2352.110851.6365h=12.2, j=13.0, k=11.82MASSQuery vizier around this object
37.8352.081951.6431B2=20.4, R1=19.2, R2=19.3USNO-B1Query vizier around this object
38.0352.088651.6472B2=20.0, I=18.6, R1=18.3, R2=18.8USNO-B1Query vizier around this object


There are 332 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
11.2352.100251.6401B1=20.9, B2=19.1, I=18.6, R1=19.1, R2=18.9USNO-B1Query vizier around this object
19.2352.094851.6327h=15.7, j=16.1, k=15.72MASSQuery vizier around this object
19.5352.094651.6326B1=18.6, B2=17.6, I=16.9, R1=17.1, R2=16.9USNO-B1Query vizier around this object
21.3352.103551.6420B1=20.1, B2=19.9, I=18.5, R1=18.9, R2=18.4USNO-B1Query vizier around this object
25.4352.107951.6388h=13.5, j=13.9, k=13.42MASSQuery vizier around this object
26.7352.108551.6384B1=15.8, B2=14.2, I=12.5, R1=13.6, R2=13.0USNO-B1Query vizier around this object
29.0352.083751.6389B1=19.7, B2=18.6, I=18.1, R1=18.1, R2=17.9USNO-B1Query vizier around this object
31.1352.106951.6437h=14.2, j=14.6, k=14.12MASSQuery vizier around this object
31.3352.106851.6438B1=17.2, B2=16.3, I=15.3, R1=15.6, R2=15.6USNO-B1Query vizier around this object
31.3352.093551.6294B1=18.6, B2=17.5, I=17.0, R1=17.0, R2=16.9USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 385 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.