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Swift Trigger: 791201

Presumed name: GRB 171120A

Back to trigger list.

BAT 10h 55m 08.88s, +22° 27′ 00.0″
position:(163.787, 22.450 ± 180″)
XRT 10h 55m 09.86s, +22° 27′ 30.2″
position:(163.7911, 22.4584 ± 2.5″)
UVOT No position available.
Galactic NHI:1.12×100 cm-2
Galactic E(B-V):0.018 mag
Best RA:10h 55m 09.86s= 163.7911 d
Best Dec:+22° 27′ 30.2″= 22.4584 d
Gal Lat:63.26
Gal Long:216.54
Sun angle:82.07°, 4.8 hr West

1Sper #2 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

UVOT u image

u image

UVOT white image

white image

Blink images with DSS (link via GSFC)


SPER results page for this trigger.

Image of the SPER data

There are 4 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
0.0′′163.7911022.45840GCN #22133GRB 171120A: Swift detection of a burstVizier logo
2.5′′163.7904222.45869GCN #22135GRB 171120A: Enhanced Swift-XRT positionVizier logo
265.9′′163.8400022.40000GCN #22136GRB 171120A: Fermi-LAT detectionVizier 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
139.8163.775122.4225[SPD2011] 24424Query vizier around this object
175.8163.760122.4188SDSS J105502.42+222507.8g=21.6, i=20.39, r=20.56, u=21.9, z=19.7Query vizier around this object
189.3163.791522.4058SDSS J105509.95+222420.9g=22.1, i=20.2, r=20.59, u=21.9, z=19.6Query 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
16.5163.791222.4631Mag=24.3NEDQuery vizier around this object
17.0163.786522.4563R=21.8, g=23.6, i=21.4, u=23.3, z=22.4SDSSQuery vizier around this object
17.0163.786222.4564Mag=22.8NEDQuery vizier around this object
20.7163.784922.4586R=21.3, g=23.3, i=20.7, u=24.9, z=20.3SDSSQuery vizier around this object
20.7163.785022.4586Mag=22.5NEDQuery vizier around this object
21.9163.795522.4539R=21.7, g=22.6, i=21.2, u=24.4, z=20.6SDSSQuery vizier around this object
22.0163.795422.4539Mag=22.4NEDQuery vizier around this object
30.1163.789222.4667Mag=22.0NEDQuery vizier around this object
30.1163.789122.4666R=22.9, g=25.3, i=23.0, u=22.9, z=22.1SDSSQuery vizier around this object
35.8163.795422.4493R=23.1, g=23.7, i=21.7, u=23.0, z=22.6SDSSQuery vizier around this object


There are 485 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
16.5163.791322.4630I=23.5, R=23.0, g=24.2, u=24.8, z=23.1SDSSQuery vizier around this object
36.3163.801522.4553I=21.8, R=22.6, g=24.5, u=24.7, z=21.0SDSSQuery vizier around this object
37.7163.780022.4607B1=21.6, B2=20.1, I=19.0, R2=19.9USNO-B1Query vizier around this object
38.3163.779822.4606I=19.7, R=20.2, g=21.5, u=23.5, z=19.4SDSSQuery vizier around this object
45.2163.782022.4491B1=20.6, B2=20.9, I=19.0, R2=19.7USNO-B1Query vizier around this object
47.1163.789422.4454I=21.4, R=22.0, g=23.1, u=25.1, z=21.1SDSSQuery vizier around this object
48.1163.779922.4669B1=20.5, B2=20.9, R1=19.5, R2=20.0USNO-B1Query vizier around this object
48.2163.779822.4668I=20.1, R=20.2, g=20.6, u=21.6, z=20.1SDSSQuery vizier around this object
59.1163.808722.4606I=18.8, R2=19.9USNO-B1Query vizier around this object
61.9163.809622.4599I=18.8, R=18.9, g=19.3, u=20.2, z=18.8SDSSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 161 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.