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Swift Trigger: 635289

Presumed name: GRB 150318A

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BAT 21h 39m 53.04s, -61° 28′ 37.2″
position:(324.971, -61.477 ± 180″)
XRT 21h 40m 01.34s, -61° 27′ 21.2″
position:(325.0056, -61.4559 ± 4.7″)
UVOT No position available.
Galactic NHI:2.95×100 cm-2
Galactic E(B-V):0.036 mag
Best RA:21h 40m 01.34s= 325.0056 d
Best Dec:-61° 27′ 21.2″= -61.4559 d
Gal Lat:-43.31
Gal Long:332.07
Sun angle:65.14°, 2.2 hr West

1Sper #0 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

No UVOT images are currently available.


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′′325.00560-61.45590GCN #17599GRB 150318A: Swift detection of a burstVizier logo
3.1′′325.00597-61.45674GCN #17600GRB 150318A: Enhanced Swift-XRT positionVizier logo
32.5′′324.99000-61.46100GCN #17604GRB 150318A: 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
188.8324.9740-61.40572dFGRS TGS918Z524B=18.024, R=17.585Query 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
31.9324.9871-61.4551B=22.4SSSQuery vizier around this object
36.9324.9842-61.4558Mag=18.7NEDQuery vizier around this object
37.8324.9836-61.4559B=20.7, R2=18.5, i=17.8SSSQuery vizier around this object
39.5325.0150-61.4458Mag=18.7NEDQuery vizier around this object
39.7325.0043-61.4449B=21.7, R2=20.2SSSQuery vizier around this object
49.5324.9860-61.4660B=20.1, R2=19.0, i=18.7SSSQuery vizier around this object
49.9324.9858-61.4661Mag=19.88NEDQuery vizier around this object
50.3325.0182-61.4433B=21.3, R2=19.9SSSQuery vizier around this object
52.9325.0246-61.4675Mag=19.7NEDQuery vizier around this object
65.0324.9867-61.4716B=19.5, R2=19.2SSSQuery vizier around this object


There are 114 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
6.4325.0046-61.4542h=15.8, j=16.6, k=15.62MASSQuery vizier around this object
7.1325.0046-61.4540B2=20.3, I=18.1, R1=18.6, R2=18.7USNO-B1Query vizier around this object
19.2325.0091-61.4508B2=19.9, I=18.4, R1=19.0, R2=19.5USNO-B1Query vizier around this object
23.1324.9955-61.4517R1=19.8, R2=20.5USNO-B1Query vizier around this object
29.3325.0024-61.4479I=19.1, R1=19.8USNO-B1Query vizier around this object
31.4324.9874-61.4551R1=19.8, R2=20.6USNO-B1Query vizier around this object
36.3324.9846-61.4552B2=20.8, I=19.5USNO-B1Query vizier around this object
37.7324.9837-61.4558B2=20.3, I=18.1, R1=18.4, R2=18.8USNO-B1Query vizier around this object
40.2325.0043-61.4447B2=20.9, R1=19.8, R2=20.5USNO-B1Query vizier around this object
49.3324.9862-61.4660B2=20.0, I=19.2, R1=19.0, R2=19.1USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 148 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.