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Swift Trigger: 540964

Presumed name: GRB 121209A

Back to trigger list.

BAT 21h 47m 12.24s, -08° 14′ 38.4″
position:(326.801, -8.244 ± 180″)
XRT 21h 47m 08.95s, -08° 14′ 06.4″
position:(326.7873, -8.2351 ± 2.2″)
UVOT No position available.
Galactic NHI:3.81×1020 cm-2
Galactic E(B-V):NED unavailable
Best RA:21h 47m 08.95s= 326.7873 d
Best Dec:-08° 14′ 06.4″= -8.2351 d
Gal Lat:-42.56
Gal Long:47.53
Sun angle:68.23°, -4.7 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 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
0.1′′326.78733-8.23508GCN #14049GRB 121209A: GROND optical afterglow candidateVizier logo
1.3′′326.78725-8.23544GCN #14051GRB 121209A: Enhanced Swift-XRT positionVizier logo
11.1′′326.78917-8.23262GCN #14045GRB 121209A: Swift detection of a burstVizier logo
46.5′′326.80000-8.23217GCN #14052GRB 121209A: 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
177.0326.8009-8.18782MASX J21471221-0811161B=17.01, H=12.658, J=13.517, K=12.462, R=15.55, g=16.560, i=15.134, r=15.585, u=18.461, z=14.772Query 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
13.4326.7850-8.2381Mag=20.2NEDQuery vizier around this object
15.7326.7829-8.2347Mag=21.2NEDQuery vizier around this object
16.7326.7850-8.2311Mag=22.5NEDQuery vizier around this object
21.1326.7814-8.2354R=21.9, g=22.6, i=21.1, u=23.6, z=20.0SDSSQuery vizier around this object
28.0326.7946-8.2328Mag=22.5NEDQuery vizier around this object
28.0326.7948-8.2328R=21.4, g=21.9, i=21.3, u=23.2, z=20.3SDSSQuery vizier around this object
28.9326.7954-8.2344Mag=21.3NEDQuery vizier around this object
33.7326.7867-8.2258Mag=21.3NEDQuery vizier around this object
34.7326.7958-8.2397Mag=23.6NEDQuery vizier around this object
34.8326.7846-8.2444Mag=18.6NEDQuery vizier around this object


There are 414 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
13.4326.7851-8.2381I=19.7, R=19.8, g=20.2, u=21.3, z=19.5SDSSQuery vizier around this object
13.4326.7850-8.2381B1=20.0, B2=20.4, R1=19.7, R2=19.5USNO-B1Query vizier around this object
15.7326.7829-8.2346I=21.0, R=20.9, g=21.2, u=21.8, z=20.7SDSSQuery vizier around this object
16.7326.7850-8.2310I=21.8, R=21.8, g=22.5, u=22.9, z=21.7SDSSQuery vizier around this object
20.2326.7928-8.2362I=25.0, R=23.8, g=25.4, u=26.4, z=20.6SDSSQuery vizier around this object
28.9326.7954-8.2344I=19.5, R=20.0, g=21.3, u=22.9, z=19.1SDSSQuery vizier around this object
29.1326.7954-8.2345B2=20.6, I=18.5, R1=19.6, R2=19.8USNO-B1Query vizier around this object
31.6326.7960-8.2367I=24.4, R=25.3, g=25.4, u=23.4, z=20.4SDSSQuery vizier around this object
33.3326.7864-8.2259B2=20.9, R1=18.9USNO-B1Query vizier around this object
33.7326.7866-8.2258I=20.6, R=20.8, g=21.3, u=22.5, z=21.0SDSSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 302 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.