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Swift Trigger: 994389

Presumed name: GRB 200903A

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BAT 10h 57m 14.64s, +50° 30′ 03.6″
position:(164.311, +50.501 ± 180″)
XRT No position available.
UVOT No position available.
Galactic NHI:1.25×100 cm-2
Galactic E(B-V):0.015 mag
Best RA:10h 57m 14.64s= 164.311 d
Best Dec:+50° 30′ 03.6″= +50.501 d
Gal Lat:58.12
Gal Long:158.07
Sun angle:42.99°, -0.1 hr East of Sun

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.


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′′164.3110050.50100GCN #28350GRB 200903A: Swift detection of a burstVizier logo
0.0′′164.3110050.50100GCN #28351Swift GRB200903.03: Global MASTER-Net observations report Vizier logo
47.0′′164.3130050.48800GCN #28360GRB 200903A: Swift-BAT refined analysisVizier logo

Catalogue Searches. Searched 3.33′ around BAT 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
45.7164.305450.4888SDSS J105713.29+502919.7g=21.6297, i=20.9699, r=21.1935, u=22.8884, z=20.8485Query vizier around this object
114.0164.261250.5007SDSS J105702.68+503002.3g=20.6490, i=20.3546, r=20.5791, u=20.9741, z=20.1513Query vizier around this object
184.2164.238650.5232BD+51 1638B=11.12, G=10.3578, H=9.031, J=9.350, K=8.959, V=10.44Query vizier around this object

There are 3 SIMBAD objects within the position error. The full list is here.

* 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
17.9164.310850.4961NEDQuery vizier around this object
30.7164.297650.5016B=21.4, R=20.0APM-NQuery vizier around this object
32.9164.323350.4961NEDQuery vizier around this object
33.7164.302850.4932R=19.8, g=21.2, i=19.2, u=24.9, z=18.8SDSSQuery vizier around this object
33.7164.302950.4933Mag=21.2NEDQuery vizier around this object
33.7164.320450.4936Mag=21.9NEDQuery vizier around this object
33.7164.320350.4937R=21.1, g=22.0, i=20.8, u=22.8, z=20.6SDSSQuery vizier around this object
34.0164.301250.5083Mag=23.6NEDQuery vizier around this object
34.0164.301550.5083R=22.1, g=23.1, i=22.7, u=23.1, z=20.8SDSSQuery vizier around this object
35.2164.324650.5053Mag=23.6NEDQuery vizier around this object


There are 382 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
33.6164.302850.4932I=18.8, R1=20.0, R2=19.7USNO-B1Query vizier around this object
37.1164.318950.4920B1=18.1, B2=19.3, I=17.4, R1=17.1, R2=17.5USNO-B1Query vizier around this object
37.5164.318950.4919I=17.4, R=17.5, g=17.8, u=18.8, z=17.4SDSSQuery vizier around this object
37.6164.318950.4919h=15.9, j=16.4, k=16.02MASSQuery vizier around this object
38.0164.324750.5070I=24.8, R=25.1, g=25.8, u=22.6, z=22.0SDSSQuery vizier around this object
45.6164.305450.4888I=20.9, R=21.1, g=21.6, u=22.8, z=20.9SDSSQuery vizier around this object
46.4164.301550.5124I=24.4, R=25.3, g=25.1, u=22.7, z=23.0SDSSQuery vizier around this object
47.0164.305450.4884B1=20.7, B2=21.1, R2=19.9USNO-B1Query vizier around this object
53.8164.287550.5015I=21.0, R=22.7, g=24.0, u=24.2, z=20.3SDSSQuery vizier around this object
57.7164.335750.5042B2=21.2, R1=19.8, R2=19.1USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 119 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.