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Swift Trigger: 531267

Presumed name: GRB 120817A

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BAT 16h 42m 49.44s, -38° 20′ 24.0″
position:(250.706, -38.340 ± 180″)
XRT 16h 42m 45.84s, -38° 21′ 14.5″
position:(250.69098, -38.35404 ± 4.2″)
UVOT No position available.
Galactic NHI:2.88×1021 cm-2
Galactic E(B-V):NED unavailable
Best RA:16h 42m 45.84s= 250.69098 d
Best Dec:-38° 21′ 14.5″= -38.35404 d
Gal Lat:5.08
Gal Long:344.72
Sun angle:108.98°, -6.9 hr East of Sun

1Sper #4 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 white image

white image

Blink images with DSS (link via GSFC)


SPER results page for this trigger.

Image of the SPER data

There are 13 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′′250.69098-38.35404GCN #13662GRB 120817A: Swift-XRT observationsVizier logo
2.4′′250.69133-38.35344GCN #13664GRB 120817A: FTN and FTS observationsVizier logo
5.4′′250.68918-38.35451GCN #13667GRB 120817A: Enhanced Swift-XRT positionVizier logo
62.0′′250.70417-38.34028GCN #13661GRB 120817A: Swift detection of a burstVizier logo
82.4′′250.69250-38.37689GCN #13669GRB 120817A: 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
159.9250.7329-38.38391RXS J164255.9-382302Query vizier around this object

* RA/Dec in equinox J2000

X-ray sources

RA*Dec* Source table2Observatory Query
159.6250.7329-38.38392.758e-2 +/- 1.149e-20.000e+0RASSFSCQuery vizier around this object

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

1Energy band for count-rate is mission specific.


RA*Dec*Redshift CatalogueQuery
6.9250.6925-38.3556B2=17.6, I=16.2, R1=17.1, R2=18.3USNO-B1Query vizier around this object
8.9250.6881-38.3530B2=21.0, R2=20.4USNO-B1Query vizier around this object
9.0250.6881-38.3530B=20.5, R2=20.0SSSQuery vizier around this object
9.5250.6876-38.3537B2=17.0, I=16.2, R2=20.3USNO-B1Query vizier around this object
10.7250.6873-38.3548B2=25.8, R2=22.1USNO-B1Query vizier around this object
11.0250.6908-38.3571B2=17.9, R1=17.9, R2=18.1USNO-B1Query vizier around this object
11.2250.6872-38.3549B=20.9, R2=20.3SSSQuery vizier around this object
12.6250.6932-38.3571B2=19.1, R2=21.0USNO-B1Query vizier around this object
15.3250.6911-38.3583B2=18.4, I=16.0USNO-B1Query vizier around this object
15.7250.6923-38.3498B=20.6, R2=19.3, i=18.7SSSQuery vizier around this object


There are 1021 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
2.9250.6910-38.3532B2=18.1, R1=18.8, R2=20.2USNO-B1Query vizier around this object
6.8250.6914-38.3522B2=18.9, R1=21.4, R2=20.7USNO-B1Query vizier around this object
7.0250.6925-38.3556h=14.7, j=15.6, k=14.52MASSQuery vizier around this object
8.9250.6909-38.3565B2=17.5, R2=18.4USNO-B1Query vizier around this object
8.9250.6883-38.3528B2=18.1, R1=18.4, R2=20.1USNO-B1Query vizier around this object
9.7250.6880-38.3527B2=18.1, R1=19.4, R2=19.4USNO-B1Query vizier around this object
11.1250.6873-38.3550B2=18.3, R1=20.8, R2=21.9USNO-B1Query vizier around this object
12.0250.6903-38.3573B2=16.9, I=15.9, R1=16.4, R2=17.4USNO-B1Query vizier around this object
12.8250.6889-38.3509h=15.8, j=15.8, k=15.42MASSQuery vizier around this object
13.0250.6903-38.3576h=14.8, j=15.5, k=14.62MASSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 1964 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.