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Swift Trigger: 353728

Presumed name: GRB 090531B

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BAT 16h 48m 15.36s, -36° 01′ 30.0″
position:(252.064, -36.025 ± 180″)
XRT 16h 48m 17.95s, -36° 02′ 05.6″
position:(252.0748, -36.0349 ± 3.4″)
UVOT No position available.
Galactic NHI:0.00×100 cm-2
Galactic E(B-V):1.123 mag
Best RA:16h 48m 17.95s= 252.0748 d
Best Dec:-36° 02′ 05.6″= -36.0349 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

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
0.4′′252.07480-36.03500GCN #9463GRB 090531B: Swift-XRT candidate afterglow positionVizier logo
47.5′′252.06400-36.02500GCN #9461GRB 090531B: Swift detection of a burstVizier logo
73.0′′252.07000-36.01500GCN #9465GRB 090531B: 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
52.6252.0625-36.0242GRB 090531BQuery vizier around this object
104.4252.0642-36.0072IRAS 16449-3555Query 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
13.4252.0742-36.0312B=22.1SSSQuery vizier around this object
16.0252.0793-36.0323B2=17.7, I=14.9, R1=15.7, R2=15.7USNO-B1Query vizier around this object
20.5252.0815-36.0367B2=18.9, I=16.8, R1=17.3, R2=17.4USNO-B1Query vizier around this object
22.4252.0708-36.0402B=22.0, i=19.9SSSQuery vizier around this object
24.0252.0732-36.0284B2=21.3, I=17.9USNO-B1Query vizier around this object
33.6252.0765-36.0441B=21.9, R2=20.0, i=18.6SSSQuery vizier around this object
35.8252.0871-36.0352B=21.5, i=19.9SSSQuery vizier around this object
36.8252.0824-36.0267B=20.3, R2=18.7, i=17.7SSSQuery vizier around this object
37.7252.0798-36.0252I=18.1, R1=19.0USNO-B1Query vizier around this object
38.7252.0701-36.0449B=21.7, R2=20.2SSSQuery vizier around this object


There are 239 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
9.6252.0715-36.0347h=16.0, j=16.6, k=15.52MASSQuery vizier around this object
11.2252.0758-36.0379B2=19.8, I=16.0, R1=17.2, R2=17.2USNO-B1Query vizier around this object
11.9252.0758-36.0381h=13.3, j=14.2, k=12.92MASSQuery vizier around this object
14.9252.0757-36.0308h=14.8, j=15.4, k=14.52MASSQuery vizier around this object
15.6252.0757-36.0306B2=19.8, I=17.1, R1=17.9, R2=17.7USNO-B1Query vizier around this object
15.7252.0793-36.0325h=13.4, j=13.9, k=13.22MASSQuery vizier around this object
18.6252.0763-36.0299h=15.3, j=16.2, k=15.22MASSQuery vizier around this object
20.5252.0814-36.0369h=14.7, j=15.2, k=14.42MASSQuery vizier around this object
23.7252.0672-36.0325h=15.7, j=16.6, k=16.32MASSQuery vizier around this object
23.8252.0732-36.0284h=14.9, j=15.6, k=14.42MASSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 769 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.