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Swift Trigger: 639275

Presumed name: GRB 150428A

Back to trigger list.

BAT 12h 34m 10.32s, +06° 58′ 51.6″
position:(188.543, +6.981 ± 180″)
XRT 12h 34m 09.33s, +06° 57′ 07.6″
position:(188.53889, 6.95211 ± 3.7″)
UVOT No position available.
Galactic NHI:1.53×100 cm-2
Galactic E(B-V):0.021 mag
Best RA:12h 34m 09.33s= 188.53889 d
Best Dec:+06° 57′ 07.6″= 6.95211 d
Gal Lat:69.41
Gal Long:290.65
Sun angle:not found

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 1 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′′188.538896.95211GCN #17765GRB 150428A: Swift detection of a burstVizier logo
1.6′′188.538586.95242GCN #17767GRB 150428A: GROND Dark Burst Host CandidateVizier logo
6.3′′188.538736.95384GCN #30324GRB 150428A: late-time radio observationsVizier logo
6.4′′188.538796.95389GCN #17768GRB 150428A: Enhanced Swift-XRT positionVizier logo
6.7′′188.538456.95391GCN #17771GRB 150428A: Danish1.56m optical observationsVizier logo
53.2′′188.538756.96689GCN #17774GRB 150428A: Swift-BAT refined analysisVizier logo

There are 11 matches in total. See the full table for details.

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
179.4188.53506.9024TYC 295-22-1B=11.90, H=9.744, J=10.067, K=9.641, V=11.22Query vizier around this object
180.2188.58936.9547SDSSCGB 18337.4g=22.052, i=20.275, r=20.745, u=22.524, z=19.594Query vizier around this object
189.9188.59196.9560SDSSCGB 18337.3g=21.500, i=20.401, r=20.682, u=21.685, z=20.055Query vizier around this object
190.7188.59216.9561SDSSCGB 18337Query vizier around this object
190.8188.59206.9577SDSSCGB 18337.2g=20.545, i=18.970, r=19.297, u=21.382, z=18.563Query vizier around this object
198.7188.59446.9561SDSSCGB 18337.1g=19.635, i=18.997, r=19.203, u=20.618, z=18.964Query vizier around this object

There are 6 SIMBAD objects within the position error. The full list is here.

* RA/Dec in equinox J2000

X-ray sources

RA*Dec* Source table2Observatory Query
80.1188.54746.93150.00454385811463 +/- 0.0017209056532CHANDRAQuery vizier around this object

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

1Energy band for count-rate is mission specific.


RA*Dec*Redshift CatalogueQuery
16.4188.54296.9498R=21.6, g=22.5, i=22.7, u=22.2, z=21.0SDSSQuery vizier around this object
16.9188.54296.9500NEDQuery vizier around this object
18.2188.54296.9547Mag=21.6NEDQuery vizier around this object
18.2188.54326.9548R=20.7, g=21.6, i=20.7, u=22.1, z=20.0SDSSQuery vizier around this object
18.5188.54336.9548B2=20.9, R2=20.0USNO-B1Query vizier around this object
21.5188.53926.9581Mag=21.6NEDQuery vizier around this object
26.6188.54136.9450Mag=20.0NEDQuery vizier around this object
27.3188.54086.9448B2=20.2, I=18.3USNO-B1Query vizier around this object
28.5188.53136.9546R=22.9, g=23.6, i=22.0, u=24.1, z=21.7SDSSQuery vizier around this object
32.5188.53626.9433Mag=21.5NEDQuery vizier around this object


There are 409 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
21.7188.53986.9581B1=20.8, B2=22.0, R2=19.2USNO-B1Query vizier around this object
24.0188.54096.9457B2=21.7, I=18.8, R1=19.9USNO-B1Query vizier around this object
26.5188.54136.9452B1=20.4, B2=20.3, I=18.9, R1=19.6, R2=19.4USNO-B1Query vizier around this object
26.6188.54136.9451I=19.3, R=19.4, g=19.9, u=21.1, z=19.3SDSSQuery vizier around this object
32.3188.53636.9435B2=21.8, I=18.9, R2=19.5USNO-B1Query vizier around this object
41.7188.53076.9438I=22.1, R=22.2, g=24.8, u=24.2, z=21.0SDSSQuery vizier around this object
42.8188.53766.9403B2=20.6, I=18.9, R1=19.5, R2=20.0USNO-B1Query vizier around this object
42.9188.52886.9586B2=20.8, I=18.8, R1=19.3, R2=19.8USNO-B1Query vizier around this object
44.2188.53366.9632B2=21.0, R1=18.3USNO-B1Query vizier around this object
54.0188.55336.9478B1=20.6, B2=20.3USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 197 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.