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Swift Trigger: 996184

Presumed name: GRB 200917A

Back to trigger list.

BAT 15h 43m 00.72s, -04° 41′ 42.0″
position:(235.753, -4.695 ± 180″)
XRT 15h 42m 53.86s, -04° 42′ 04.7″
position:(235.7244, -4.7013 ± 2.1″)
UVOT No position available.
Galactic NHI:9.05×100 cm-2
Galactic E(B-V):0.193 mag
Best RA:15h 42m 53.86s= 235.7244 d
Best Dec:-04° 42′ 04.7″= -4.7013 d
Gal Lat:37.79
Gal Long:2.02
Sun angle:61.20°, -4.1 hr East of Sun

1Sper #9 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 10 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
1.3′′235.72470-4.70110GCN #28435GRB 200917A: Swift detection of a burstVizier logo
2.6′′235.72433-4.70058GCN #28436GRB 200917A: Enhanced Swift-XRT positionVizier logo
2.6′′235.72433-4.70058GCN #28450GRB 200917A: GROWTH-India Telescope optical upper limit.Vizier logo
66.2′′235.74167-4.69483GCN #28447GRB 200917A: 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
1.7235.7246-4.7008NEDQuery vizier around this object
28.9235.7325-4.7003NEDQuery vizier around this object
45.0235.7358-4.6961NEDQuery vizier around this object
46.6235.7359-4.6953I=18.7, R1=19.6, R2=20.6USNO-B1Query vizier around this object
48.5235.7154-4.6911NEDQuery vizier around this object
55.5235.7392-4.6967NEDQuery vizier around this object
58.4235.7404-4.7003NEDQuery vizier around this object
59.0235.7375-4.7114NEDQuery vizier around this object
59.8235.7312-4.7164NEDQuery vizier around this object
60.3235.7117-4.6900NEDQuery vizier around this object


There are 168 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
37.1235.7343-4.6982B1=20.9, B2=20.2, R1=19.5, R2=19.7USNO-B1Query vizier around this object
37.8235.7285-4.6916B1=21.1, I=18.6USNO-B1Query vizier around this object
57.7235.7405-4.7014I=18.6, R1=19.8, R2=20.3USNO-B1Query vizier around this object
70.8235.7435-4.7062B1=20.8, B2=20.2, R1=19.6, R2=20.2USNO-B1Query vizier around this object
77.3235.7397-4.7164h=14.4, j=15.0, k=14.32MASSQuery vizier around this object
77.4235.7398-4.7164B1=18.4, B2=17.6, I=15.9, R1=16.1, R2=16.1USNO-B1Query vizier around this object
79.7235.7360-4.7202h=14.7, j=15.2, k=14.92MASSQuery vizier around this object
79.7235.7361-4.7201B1=17.5, B2=17.1, I=15.8, R1=16.3, R2=16.1USNO-B1Query vizier around this object
80.2235.7247-4.6790B1=20.6, B2=20.7, R2=20.5USNO-B1Query vizier around this object
88.5235.7485-4.6962I=18.6, R1=19.9, R2=20.7USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 106 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.