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Swift Trigger: 652334

Presumed name: GRB 150817A

Back to trigger list.

BAT 16h 38m 34.32s, -12° 03′ 57.6″
position:(249.643, -12.066 ± 180″)
XRT 16h 38m 31.92s, -12° 03′ 10.8″
position:(249.6330, -12.0530 ± 2.4″)
UVOT No position available.
Galactic NHI:1.43×100 cm-2
Galactic E(B-V):0.482 mag
Best RA:16h 38m 31.92s= 249.6330 d
Best Dec:-12° 03′ 10.8″= -12.0530 d
Gal Lat:22.44
Gal Long:5.19
Sun angle:105.88°, -6.9 hr East of Sun

1Sper #1 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 1 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
1.1′′249.63325-12.05319GCN #18144GRB 150817A: RATIR Optical Afterglow CandidateVizier logo
2.2′′249.63350-12.05336GCN #18143GRB 150817A: Swift detection of a burstVizier logo
6.1′′249.63129-12.05267GCN #18145GRB 150817A: Continued RATIR Observations´┐Ż Revised CandidateVizier logo
6.8′′249.63108-12.05292GCN #18146GRB 150817A: Enhanced Swift-XRT positionVizier logo
10.7′′249.63458-12.05047GCN #18148GRB 150817A: 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
58.4249.6492-12.0494PMN J1638-1203Query vizier around this object
176.3249.6700-12.0200OHIO S -159.8Query 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
30.7249.6248-12.0559I=18.9, R2=19.8USNO-B1Query vizier around this object
31.2249.6395-12.0589B=21.3, R2=19.7, i=19.3SSSQuery vizier around this object
48.8249.6268-12.0409B=21.8SSSQuery vizier around this object
51.2249.6324-12.0672B=17.7, R2=17.0, i=15.8SSSQuery vizier around this object
51.4249.6323-12.0673B1=17.7, I=15.9, R1=15.6, R2=16.0USNO-B1Query vizier around this object
55.3249.6173-12.0543B1=19.6, B2=18.0, I=15.2, R1=16.1, R2=16.2USNO-B1Query vizier around this object
59.2249.6492-12.0494NEDQuery vizier around this object
61.4249.6161-12.0571B=21.2, R2=19.8, i=19.3SSSQuery vizier around this object
62.0249.6191-12.0424B=22.0SSSQuery vizier around this object
62.7249.6196-12.0645B=19.9, R2=19.0, i=18.5SSSQuery vizier around this object


There are 66 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
8.0249.6317-12.0512I=18.6, R2=20.1USNO-B1Query vizier around this object
22.8249.6265-12.0534h=15.4, j=16.0, k=15.32MASSQuery vizier around this object
22.9249.6265-12.0534B1=19.7, B2=18.5, I=17.1, R1=17.7, R2=17.6USNO-B1Query vizier around this object
29.1249.6337-12.0450h=12.7, j=13.1, k=12.62MASSQuery vizier around this object
29.1249.6337-12.0449B1=16.7, B2=16.0, I=14.0, R1=14.8, R2=14.7USNO-B1Query vizier around this object
30.4249.6393-12.0588B1=20.4, B2=20.4, I=18.5, R1=19.3, R2=19.3USNO-B1Query vizier around this object
31.9249.6394-12.0593B2=21.0, R1=19.3USNO-B1Query vizier around this object
39.7249.6270-12.0437B2=21.6, R2=19.7USNO-B1Query vizier around this object
44.7249.6205-12.0507B1=20.4, B2=19.7, I=17.9, R1=18.2, R2=19.1USNO-B1Query vizier around this object
50.2249.6323-12.0669h=13.9, j=14.4, k=13.72MASSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 224 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.