Skip banner and navigation tools.

 |  site map

Sky images|
UVOT images|
SPER data|

[Hide] [Trigger list]

Swift Trigger: 744791

Presumed name: GRB 170331A

Back to trigger list.

BAT 21h 35m 07.68s, -24° 24′ 49.3″
position:(323.782, -24.4137 ± 180″)
XRT 21h 35m 10.13s, -24° 23′ 08.9″
position:(323.7922, -24.3858 ± 2.1″)
UVOT No position available.
Galactic NHI:3.97×100 cm-2
Galactic E(B-V):0.049 mag
Best RA:21h 35m 10.13s= 323.7922 d
Best Dec:-24° 23′ 08.9″= -24.3858 d
Gal Lat:-46
Gal Long:25.04
Sun angle:52.99°, -20.94 hr East of Sun

1Sper #6 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.

Image of the SPER data

There are 14 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
0.7′′323.79200-24.38580GCN #20948GRB 170331A: Prompt enhanced Swift-XRT positionVizier logo
1.5′′323.79258-24.38603GCN #20946GRB 170331A: Swift detection of a burstVizier logo
1.9′′323.79188-24.38625GCN #20960GRB 170331A: Enhanced Swift-XRT positionVizier logo
86.3′′323.77800-24.40600GCN #20967GRB 170331A: 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

* 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
31.2323.7858-24.3922Mag=18.6NEDQuery vizier around this object
52.6323.7771-24.3911Mag=18.6NEDQuery vizier around this object
53.6323.7954-24.4004B=22.0SSSQuery vizier around this object
59.7323.7854-24.4014Mag=19.2NEDQuery vizier around this object
63.9323.7811-24.3712B=21.8, R2=20.1SSSQuery vizier around this object
65.5323.7854-24.3686Mag=20.1NEDQuery vizier around this object
65.6323.7857-24.3686B=22.3SSSQuery vizier around this object
73.2323.7937-24.3656Mag=20.1NEDQuery vizier around this object
74.0323.8144-24.3822B=22.1SSSQuery vizier around this object
75.9323.7758-24.4007B=21.6SSSQuery vizier around this object


There are 56 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
19.4323.7960-24.3817h=15.8, j=16.4, k=15.52MASSQuery vizier around this object
20.1323.7960-24.3814B2=20.4, I=18.6, R2=19.9USNO-B1Query vizier around this object
31.2323.7857-24.3922B2=20.7, I=17.8, R1=18.8, R2=19.5USNO-B1Query vizier around this object
31.8323.7857-24.3923h=15.4, j=16.1, k=15.42MASSQuery vizier around this object
59.8323.7855-24.4012B1=20.5, B2=20.5, R1=19.4, R2=20.0USNO-B1Query vizier around this object
60.8323.7899-24.3690h=15.3, j=15.9, k=15.12MASSQuery vizier around this object
61.9323.7900-24.3687B1=19.9, B2=19.6, I=17.3, R1=17.2, R2=17.6USNO-B1Query vizier around this object
72.2323.7797-24.3693B1=20.5, B2=20.7, R2=24.5USNO-B1Query vizier around this object
72.7323.7939-24.3657h=16.1, j=16.4, k=16.02MASSQuery vizier around this object
73.4323.7942-24.3655B1=18.4, B2=18.6, I=17.1, R1=17.4, R2=17.4USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 88 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.