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Swift Trigger: 735326

Presumed name: GRB 170127A

Back to trigger list.

BAT 11h 37m 20.64s, -45° 51′ 07.2″
position:(174.336, -45.852 ± 180″)
XRT 11h 37m 26.40s, -45° 50′ 08.9″
position:(174.3600, -45.8358 ± 2.2″)
UVOT No position available.
Galactic NHI:6.30×100 cm-2
Galactic E(B-V):0.093 mag
Best RA:11h 37m 26.40s= 174.3600 d
Best Dec:-45° 50′ 08.9″= -45.8358 d
Gal Lat:15.13
Gal Long:289.69
Sun angle:104.29°, 9.0 hr West

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

UVOT u image

u image

UVOT u image

u image

Blink images with DSS (link via GSFC)


SPER results page for this trigger.

Image of the SPER data

There are 10 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′′174.36000-45.83580GCN #20539GRB 170127A: Prompt enhanced Swift-XRT positionVizier logo
0.9′′174.35970-45.83565GCN #20548GRB 170127A: Enhanced Swift-XRT positionVizier logo
1.0′′174.35975-45.83603GCN #20538GRB 170127A: Swift detection of a burstVizier logo
62.2′′174.38167-45.82739GCN #20565GRB 170127A: 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
106.8174.3272-45.8169UCAC2 12208853B=14.133, H=8.42, I=10.49, J=9.238, K=8.133, R=12.10, V=12.537, g=13.263, i=11.046, r=11.911Query 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
10.1174.3565-45.8344I=18.7, R1=20.5USNO-B1Query vizier around this object
36.2174.3555-45.8454B2=20.3, I=18.2, R1=18.6, R2=18.9USNO-B1Query vizier around this object
40.6174.3741-45.8302B=21.3, R2=19.3, i=18.4SSSQuery vizier around this object
40.9174.3514-45.8261B2=21.1, R1=19.9, R2=19.7USNO-B1Query vizier around this object
44.7174.3537-45.8242B2=19.8, I=18.2, R1=18.4, R2=19.1USNO-B1Query vizier around this object
44.7174.3536-45.8242B=19.7, R2=19.0, i=18.3SSSQuery vizier around this object
45.5174.3425-45.8389NEDQuery vizier around this object
51.1174.3425-45.8286B=20.4, R2=19.1, i=18.5SSSQuery vizier around this object
53.7174.3416-45.8435B2=21.7, R1=20.3USNO-B1Query vizier around this object
54.5174.3571-45.8508NEDQuery vizier around this object


There are 97 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
15.4174.3637-45.8324B2=20.1, I=18.6, R1=19.0, R2=19.0USNO-B1Query vizier around this object
16.9174.3533-45.8354B2=20.7, R1=19.7, R2=19.6USNO-B1Query vizier around this object
18.8174.3667-45.8335B2=19.1, I=17.9, R1=18.1, R2=18.6USNO-B1Query vizier around this object
21.7174.3668-45.8321B2=20.5, I=17.9, R1=19.2, R2=19.2USNO-B1Query vizier around this object
23.6174.3550-45.8414B2=18.1, I=17.1, R1=17.2, R2=17.3USNO-B1Query vizier around this object
23.8174.3549-45.8414h=15.8, j=16.4, k=15.72MASSQuery vizier around this object
31.1174.3565-45.8275h=14.6, j=15.2, k=14.32MASSQuery vizier around this object
31.2174.3565-45.8275B2=19.4, I=16.4, R1=17.2, R2=17.6USNO-B1Query vizier around this object
31.6174.3500-45.8305B2=18.2, I=16.6, R1=16.8, R2=17.0USNO-B1Query vizier around this object
31.6174.3716-45.8325B2=18.8, I=17.7, R1=17.7, R2=18.1USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 382 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.