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Swift Trigger: 927839

Presumed name: GRB 191004B

Back to trigger list.

BAT 03h 16m 42.48s, -39° 36′ 46.8″
position:(49.177, -39.613 ± 180″)
XRT 03h 16m 48.97s, -39° 38′ 05.8″
position:(49.20403, -39.63494 ± 3.9″)
UVOT 03h 16m 49.08s, -39° 38′ 03.1″
position:(49.2045, -39.6342 ± 0.6″)
Galactic NHI:1.83×100 cm-2
Galactic E(B-V):0.017 mag
Best RA:03h 16m 49.08s= 49.2045 d
Best Dec:-39° 38′ 03.1″= -39.6342 d
Gal Lat:-57.45
Gal Long:244.9
Sun angle:123.25°, 9.4 hr West

1Sper #1 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 2 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
0.3′′49.20458-39.63425GCN #25947GRB 191004B: Swift detection of a burst with an optical counterpartVizier logo
0.8′′49.20458-39.63442GCN #25978GRB 191004B: Swift/UVOT DetectionVizier logo
1.1′′49.20476-39.63443GCN #25948Swift GRB191004.9: Global MASTER-Net OT detectionVizier logo
3.3′′49.20398-39.63502GCN #25951GRB 191004B: Enhanced Swift-XRT positionVizier logo
16.0′′49.20000-39.63700GCN #25955GRB 191004B: Swift-BAT refined analysisVizier logo
65.0′′49.22662-39.62819GCN #25954GRB 191004B: NOT optical photometryVizier logo

There are 12 matches in total. See the full table for details.

Catalogue Searches. Searched 3.33′ around UVOT 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
90.949.1722-39.62992MASX J03164132-3937477B=16.70, H=12.643, J=13.552, K=12.284, R=15.50Query 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
22.049.2039-39.6281B2=20.2, R1=19.5, R2=19.9USNO-B1Query vizier around this object
22.449.2028-39.6281B2=21.0, I=18.7, R1=19.7USNO-B1Query vizier around this object
23.549.2075-39.6281NEDQuery vizier around this object
24.049.2077-39.6280B2=14.1, I=12.0, R1=12.5, R2=12.7USNO-B1Query vizier around this object
33.549.2160-39.6369B2=23.0, R2=20.6USNO-B1Query vizier around this object
44.249.2203-39.6358B=22.4SSSQuery vizier around this object
50.249.1871-39.6383NEDQuery vizier around this object
53.649.2096-39.6198B2=21.1, R1=19.6USNO-B1Query vizier around this object
60.349.1836-39.6296B=22.5SSSQuery vizier around this object
62.549.2242-39.6258Mag=18.7NEDQuery vizier around this object


There are 93 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
16.549.2030-39.6298B2=21.2, R1=20.6, R2=19.8USNO-B1Query vizier around this object
18.949.2031-39.6291B2=20.5, I=18.6, R1=20.7, R2=20.5USNO-B1Query vizier around this object
19.149.1979-39.6357R1=20.8, R2=19.9USNO-B1Query vizier around this object
20.149.1999-39.6299B2=21.3, R1=20.6USNO-B1Query vizier around this object
23.849.2077-39.6281h=11.3, j=11.7, k=11.22MASSQuery vizier around this object
27.649.2113-39.6286B2=20.9, R1=20.3, R2=19.9USNO-B1Query vizier around this object
28.649.2098-39.6274B2=20.1, R2=18.4USNO-B1Query vizier around this object
29.649.2114-39.6279B2=21.1, R2=19.9USNO-B1Query vizier around this object
40.049.2104-39.6241B2=21.2, R1=20.9USNO-B1Query vizier around this object
43.849.2202-39.6356B2=21.3, R1=20.9, R2=20.2USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 89 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.