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Swift Trigger: 859282

Presumed name: GRB 180904A

Back to trigger list.

BAT 18h 17m 00.00s, +46° 37′ 22.8″
position:(274.250, 46.623 ± 180″)
XRT 18h 16m 59.93s, +46° 37′ 45.8″
position:(274.2497, 46.6294 ± 2.1″)
UVOT No position available.
Galactic NHI:3.00×100 cm-2
Galactic E(B-V):0.037 mag
Best RA:18h 16m 59.93s= 274.2497 d
Best Dec:+46° 37′ 45.8″= 46.6294 d
Gal Lat:25.02
Gal Long:74.4
Sun angle:98.81°, -7.4 hr East of Sun

1Sper #5 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 5 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
1.1′′274.2497946.62969GCN #23196GRB 180904A: Enhanced Swift-XRT positionVizier logo
1.5′′274.2495046.62980GCN #23194GRB 180904A: Swift detection of a burstVizier logo
2.3′′274.2489246.62975GCN #23195GRB 180904A: NOT optical observations´┐Ż candidate host galaxyVizier logo
45.3′′274.2600046.63981GCN #23203GRB 180904A: 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
27.5274.241246.6242NEDQuery vizier around this object
39.8274.255846.6192NEDQuery vizier around this object
42.7274.234446.6349B=21.7, R=20.0APM-NQuery vizier around this object
49.3274.269646.6283B1=20.4, B2=20.3USNO-B1Query vizier around this object
49.7274.269746.6282B=20.5, R=19.4APM-NQuery vizier around this object
50.3274.270046.6283B1=20.7, B2=20.0, R1=19.9, R2=19.8USNO-B1Query vizier around this object
54.4274.264646.6406NEDQuery vizier around this object
55.1274.228746.6344NEDQuery vizier around this object
60.1274.227246.6232B2=20.4, I=17.9, R1=19.1, R2=19.1USNO-B1Query vizier around this object
60.2274.227146.6231NEDQuery vizier around this object


There are 104 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
6.0274.251846.6286B2=20.4, R2=20.5USNO-B1Query vizier around this object
18.2274.249046.6244B1=20.6, B2=20.2, I=18.9, R1=19.3, R2=19.4USNO-B1Query vizier around this object
26.8274.241846.6243B1=15.8, B2=15.5, I=14.3, R1=14.7, R2=14.7USNO-B1Query vizier around this object
26.9274.241846.6243h=13.3, j=13.5, k=13.12MASSQuery vizier around this object
30.5274.248046.6378B1=20.8, R1=19.9USNO-B1Query vizier around this object
36.0274.245646.6198I=18.8, R2=20.4USNO-B1Query vizier around this object
39.5274.255846.6193B1=20.4, B2=19.2, I=16.5, R1=17.5, R2=17.2USNO-B1Query vizier around this object
39.8274.255846.6192h=14.8, j=15.4, k=14.72MASSQuery vizier around this object
54.4274.264546.6406h=15.8, j=16.4, k=15.22MASSQuery vizier around this object
54.7274.264646.6406B1=20.6, B2=19.8, I=17.6, R1=18.5, R2=18.0USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 151 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.