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Swift Trigger: 539563

Presumed name: GRB 121125A

Back to trigger list.

BAT 15h 14m 04.80s, +55° 19′ 19.2″
position:(228.520, +55.322 ± 180″)
XRT 15h 14m 06.77s, +55° 18′ 49.3″
position:(228.5282, 55.3137 ± 2.4″)
UVOT 15h 14m 06.53s, +55° 18′ 47.9″
position:(228.5272, +55.3133 ± 0.7″)
Galactic NHI:1.27×1020 cm-2
Galactic E(B-V):NED unavailable
Best RA:15h 14m 06.53s= 228.5272 d
Best Dec:+55° 18′ 47.9″= +55.3133 d
Gal Lat:51.85
Gal Long:90.44
Sun angle:76.91°, 0.9 hr West

1Sper #2 auto processing.

GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

Sun angle for this burst.

UVOT data

UVOT u image

u image

UVOT white image

white image

Blink images with DSS (link via GSFC)


SPER results page for this trigger.

Image of the SPER data

There are 3 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
0.2′′228.5272555.31333GCN #13993GRB 121125A: Swift detection of a burst with optical counterpartVizier logo
0.5′′228.5274255.31333GCN #14002GRB 121125A: Swift/UVOT DetectionVizier logo
0.5′′228.5274455.31332GCN #13995GRB 121125A: LOAO ObservationVizier logo
1.7′′228.5280455.31336GCN #13998GRB 121125A: Enhanced Swift-XRT positionVizier logo
22.7′′228.5191755.31764GCN #13996GRB 121125A: Swift-BAT refined analysisVizier logo

There are 12 matches in total. See the full table for details.

Catalogue Searches. Searched 3.33′ 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
172.4228.595855.3422NVSS J151423+552033Query vizier around this object

* 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
9.1228.529655.3111Mag=17.6NEDQuery vizier around this object
24.2228.515855.3114Mag=22.0NEDQuery vizier around this object
26.7228.515855.3114R=21.7, g=22.3, i=21.3, u=22.8, z=22.5SDSSQuery vizier around this object
27.1228.518355.3078Mag=22.9NEDQuery vizier around this object
29.5228.518455.3077R=22.0, g=23.6, i=21.4, u=24.1, z=21.0SDSSQuery vizier around this object
33.9228.514255.3075Mag=23.5NEDQuery vizier around this object
34.6228.544855.3119R=19.5, g=20.4, i=19.1, u=21.3, z=18.7SDSSQuery vizier around this object
34.7228.544855.3117B=21.5, R=19.9APM-NQuery vizier around this object
36.4228.544655.3119Mag=20.3NEDQuery vizier around this object
36.4228.514155.3075R=21.9, g=23.4, i=20.8, u=23.9, z=20.5SDSSQuery vizier around this object


There are 319 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
9.5228.529655.3112I=16.4, R=16.7, g=17.6, u=19.6, z=16.3SDSSQuery vizier around this object
9.6228.529855.3112B1=18.5, B2=17.6, I=16.0, R1=16.3, R2=16.1USNO-B1Query vizier around this object
9.6228.529655.3112h=14.7, j=15.2, k=14.52MASSQuery vizier around this object
33.0228.544055.3118B2=20.9, R2=19.2USNO-B1Query vizier around this object
34.1228.544655.3121B2=20.2, I=18.7, R2=19.6USNO-B1Query vizier around this object
34.3228.544655.3118B1=20.9, B2=20.7, I=18.3, R1=19.5, R2=19.3USNO-B1Query vizier around this object
37.5228.536155.3043I=22.9, R=22.7, g=25.0, u=24.9, z=22.1SDSSQuery vizier around this object
43.4228.519455.3246B1=20.9, I=19.1, R1=19.8, R2=20.1USNO-B1Query vizier around this object
43.4228.519255.3246I=19.2, R=19.9, g=21.3, u=25.4, z=18.8SDSSQuery vizier around this object
44.5228.518555.3248B1=21.0, B2=21.2, R2=20.4USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 203 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.