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Swift Trigger: 650530

Presumed name: GRB 150727A

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BAT 13h 35m 57.60s, -18° 21′ 18.0″
position:(203.990, -18.355 ± 180″)
XRT 13h 35m 52.92s, -18° 19′ 33.2″
position:(203.9705, -18.3259 ± 4.7″)
UVOT 13h 35m 52.51s, -18° 19′ 31.1″
position:(203.9688, -18.3253 ± 0.6″)
Galactic NHI:7.38×100 cm-2
Galactic E(B-V):0.090 mag
Best RA:13h 35m 52.51s= 203.9688 d
Best Dec:-18° 19′ 31.1″= -18.3253 d
Gal Lat:43.29
Gal Long:317.49
Sun angle:84.75°, -5.2 hr East of Sun

1Sper #0 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.

No SPER data received yet. Refresh this page to check again.

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)RA DecDate reportedSource MiscQuery
0.2′′203.96883-18.32536GCN #18084GRB 150727A: Swift/UVOT DetectionVizier logo
0.3′′203.96883-18.32539GCN #18089GRB 150727A: RATIR Optical ObservationsVizier logo
0.3′′203.96883-18.32539GCN #18076GRB 150727A: Swift detection of a burst with an optical counterpartVizier logo
2.1′′203.96842-18.32575GCN #18079GRB 150727A: Enhanced Swift-XRT positionVizier logo
19.3′′203.96800-18.32000GCN #18086GRB 150727A: Swift-BAT refined analysisVizier logo

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

* 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
21.8203.9640-18.3213B=19.9, R2=18.8, i=18.6SSSQuery vizier around this object
21.9203.9749-18.3234B2=20.1, R1=19.3USNO-B1Query vizier around this object
37.8203.9688-18.3148I=18.8, R2=19.5USNO-B1Query vizier around this object
45.0203.9560-18.3283B=22.1SSSQuery vizier around this object
48.4203.9605-18.3144B=21.8, R2=19.8, i=18.5SSSQuery vizier around this object
48.4203.9604-18.3145I=18.5, R2=19.9USNO-B1Query vizier around this object
48.7203.9823-18.3208B=20.7, R2=19.1, i=18.8SSSQuery vizier around this object
51.3203.9835-18.3222B=18.5, R2=16.9, i=16.5SSSQuery vizier around this object
58.5203.9639-18.3097B=19.9, R2=18.0, i=16.5SSSQuery vizier around this object
59.4203.9706-18.3417B=21.6, R2=20.0, i=19.0SSSQuery vizier around this object


There are 98 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
9.4203.9698-18.3228B2=20.5, I=18.6, R1=18.6, R2=19.4USNO-B1Query vizier around this object
20.1203.9744-18.3236B1=17.0, B2=17.7, I=16.7, R1=16.5, R2=16.8USNO-B1Query vizier around this object
20.2203.9745-18.3237h=15.5, j=15.9, k=15.32MASSQuery vizier around this object
21.2203.9642-18.3214B1=20.5, B2=19.6, I=18.8, R1=18.6, R2=19.0USNO-B1Query vizier around this object
21.2203.9667-18.3308B1=19.9, B2=21.7USNO-B1Query vizier around this object
30.8203.9764-18.3208B1=20.5, B2=15.5USNO-B1Query vizier around this object
35.2203.9771-18.3312B2=20.5, I=18.5, R2=19.3USNO-B1Query vizier around this object
38.6203.9779-18.3316B2=17.2, I=18.6, R2=19.6USNO-B1Query vizier around this object
46.4203.9803-18.3321B2=21.5, I=18.4, R2=19.3USNO-B1Query vizier around this object
49.4203.9825-18.3209B2=20.0, I=18.0, R1=19.3, R2=18.6USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 158 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.