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Swift Trigger: 337889

Presumed name: GRB 081221

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BAT 01h 03m 13.20s, -24° 31′ 33.6″
position:(15.805, -24.526 ± 180″)
XRT 01h 03m 10.42s, -24° 32′ 54.2″
position:(15.7934, -24.5484 ± 5.0″)
UVOT No position available.
Galactic NHI:0.00×100 cm-2
Galactic E(B-V):0.021 mag
Best RA:01h 03m 10.42s= 15.7934 d
Best Dec:-24° 32′ 54.2″= -24.5484 d
Gal Lat:
Gal Long:
Sun angle:not found

GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

Sun angle for this burst.

UVOT data

UVOT unknown image

unknown image

UVOT unknown image

unknown image

Blink images with DSS (link via GSFC)


SPER results page for this trigger.

No SPER data received yet. Refresh this page to check again.

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)RA DecDate reportedSource MiscQuery
0.0′′15.79340-24.54840GCN #8687GRB 081221: Swift detection of a burstVizier logo
3.1′′15.79250-24.54810GCN #8690GRB 081221: Enhanced Swift-XRT positionVizier logo
3.7′′15.79246-24.54783GCN #8698GRB 081221: Gemini-N nIR imagingVizier logo
6.1′′15.79208-24.54961GCN #8688GRB 081221: NOT observationsVizier logo
14.6′′15.78996-24.54583GCN #8689GRB 081221: further NOT observationsVizier logo
32.4′′15.80083-24.54244GCN #8708GRB 081221� 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

* 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
0.115.7933-24.5483NEDQuery vizier around this object
22.215.7911-24.5542I=18.7, R2=21.6USNO-B1Query vizier around this object
31.915.7844-24.5449B2=21.9, I=18.8USNO-B1Query vizier around this object
36.515.8044-24.5499B=21.7SSSQuery vizier around this object
38.315.7824-24.5448B=22.1SSSQuery vizier around this object
41.415.7828-24.5422B=21.1, R2=19.5, i=18.8SSSQuery vizier around this object
49.315.8052-24.5569B=21.3, R2=20.0SSSQuery vizier around this object
50.415.8043-24.5385B2=21.9, R2=24.0USNO-B1Query vizier around this object
52.715.7838-24.5601B=20.0, R2=18.9, i=18.7SSSQuery vizier around this object
52.715.7838-24.5603Mag=19.97NEDQuery vizier around this object


There are 48 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
14.015.7900-24.5460h=15.2, j=15.7, k=15.02MASSQuery vizier around this object
14.615.7899-24.5458B1=18.0, B2=18.5, I=17.6, R1=16.7, R2=17.2USNO-B1Query vizier around this object
19.915.7876-24.5499B1=20.5, B2=21.1USNO-B1Query vizier around this object
33.015.8002-24.5416I=18.7, R2=21.8USNO-B1Query vizier around this object
37.915.7981-24.5580B1=19.0, B2=19.1, I=18.0, R1=17.1, R2=17.7USNO-B1Query vizier around this object
38.715.7982-24.5582h=15.1, j=16.1, k=15.12MASSQuery vizier around this object
42.115.7826-24.5420B2=21.1, I=18.7, R2=20.1USNO-B1Query vizier around this object
44.115.7831-24.5563B2=21.6, I=18.7, R2=21.6USNO-B1Query vizier around this object
47.415.7989-24.5606B1=20.2, B2=21.0, R1=20.5, R2=21.2USNO-B1Query vizier around this object
49.715.7858-24.5364h=15.9, j=16.2, k=16.62MASSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 66 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.