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Swift Trigger: 537266

Presumed name: GRB 121102A

Back to trigger list.

BAT 18h 03m 36.72s, -16° 57′ 57.6″
position:(270.903, -16.966 ± 180″)
XRT 18h 03m 36.22s, -16° 57′ 28.1″
position:(270.9009, -16.9578 ± 2.1″)
UVOT No position available.
Galactic NHI:5.33×1021 cm-2
Galactic E(B-V):NED unavailable
Best RA:18h 03m 36.22s= 270.9009 d
Best Dec:-16° 57′ 28.1″= -16.9578 d
Gal Lat:2.49
Gal Long:12.43
Sun angle:51.27°, -3.6 hr East of Sun

1Sper #3 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 8 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
0.0′′270.90090-16.95780GCN #13938GRB 121102A: Swift detection of a burstVizier logo
0.5′′270.90100-16.95789GCN #13945GRB 121102A: Enhanced Swift-XRT positionVizier logo
0.6′′270.90092-16.95764GCN #13943GRB 121102A: Swift-XRT refined AnalysisVizier logo
29.4′′270.89625-16.95094GCN #13942GRB 121102A: Swift-BAT refined analysisVizier logo

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
94.7270.8935-16.9325TYC 6255-20-1B=12.50, V=11.88Query 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
9.9270.8981-16.9583I=18.1, R1=18.2, R2=19.8USNO-B1Query vizier around this object
13.9270.9011-16.9617B=20.4SSSQuery vizier around this object
16.6270.9056-16.9590I=18.7, R1=25.9USNO-B1Query vizier around this object
20.9270.9048-16.9623I=17.4, R2=20.5USNO-B1Query vizier around this object
26.2270.9016-16.9651B2=18.6, I=15.8, R1=18.5, R2=16.4USNO-B1Query vizier around this object
28.5270.9061-16.9516I=17.7, R2=20.1USNO-B1Query vizier around this object
31.3270.9099-16.9568I=17.7, R2=17.9USNO-B1Query vizier around this object
31.4270.9011-16.9665B2=19.4, I=16.6, R2=17.2USNO-B1Query vizier around this object
33.4270.8917-16.9606R1=17.8, R2=18.0USNO-B1Query vizier around this object
33.4270.8976-16.9491I=18.7, R2=21.0USNO-B1Query vizier around this object


There are 588 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
4.3270.9012-16.9566B2=21.8, I=18.1, R2=19.5USNO-B1Query vizier around this object
4.5270.8996-16.9575B2=22.4, I=17.2, R1=17.5, R2=17.5USNO-B1Query vizier around this object
7.2270.8988-16.9578I=18.5, R2=17.6USNO-B1Query vizier around this object
7.8270.9007-16.9599R1=18.9, R2=19.3USNO-B1Query vizier around this object
10.4270.9001-16.9550I=18.8, R2=19.1USNO-B1Query vizier around this object
10.4270.8992-16.9602I=17.8, R2=18.7USNO-B1Query vizier around this object
10.5270.8979-16.9585h=14.9, j=16.1, k=15.12MASSQuery vizier around this object
10.8270.9038-16.9590I=18.1, R1=20.4, R2=20.1USNO-B1Query vizier around this object
11.2270.9032-16.9556I=17.5, R2=17.1USNO-B1Query vizier around this object
12.1270.9036-16.9557B2=19.6, I=15.6, R1=15.8, R2=15.9USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 2385 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.