Swift Trigger: 676423

Presumed name: GRB 160227A

BAT	12^h 59^m 09.12^s, +78° 38′ 20.4″
position:	(194.788, +78.639 ± 180″)
XRT	12^h 59^m 13.54^s, +78° 40′ 45.8″
position:	(194.8064, 78.6794 ± 2.0″)
UVOT	12^h 59^m 13.82^s, +78° 40′ 44.8″
position:	(194.8076, +78.6791 ± 0.8″)
Galactic N_HI:	3.49×10⁰ cm^-2
Galactic E(B-V):	0.053 mag

Best RA:	12^h 59^m 13.82^s	= 194.8076 d
Best Dec:	+78° 40′ 44.8″	= +78.6791 d

Gal Lat:	38.44
Gal Long:	122.44

Sun angle:	107.67°, 9.7 hr West

¹Sper #3 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

u image

white image

Blink images with DSS (link via GSFC)

XRT SPER data

SPER results page for this trigger.

There are 11 SPER messages, and 2 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 12 59 13.41 (78.6795)
- Dec (J2000): +78 40 46.2 ( 78.67819)
- Error (90%): 2.0
- Counts in Source: 698
- Object 2
- RA (J2000) : 12 58 55.72 ( 194.73218)
- Dec (J2000): +78 40 39.3 ( 78.67759)
- Error (90%): 5.809"
- Counts in Source: 17

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	Dec	Source	Misc
0.1′′	194.80767	78.67914	GCN #19098	GRB 160227A: Swift detection of a burst with an optical counterpart
0.3′′	194.80750	78.67919	GCN #19122	GRB 160227A: Swift/UVOT Detection
0.4′′	194.80721	78.67917	GCN #19104	GRB 160227A: Enhanced Swift-XRT position
0.4′′	194.80708	78.67914	GCN #19100	GRB 160227A: Mt. Terskol observatory optical observation
1.1′′	194.80888	78.67894	GCN #19116	GRB 160227A: MASTER prompt OT Detection and LC
17.2′′	194.78333	78.67894	GCN #19099	GRB 160227A: MASTER OT Detection
56.8′′	194.74877	78.68984	GCN #19124	GRB 160227A: McDonald 0.8m Detection
56.8′′	194.74877	78.68984	GCN #19125	GRB 160227A: LOAO 1.0m optical detection
161.8′′	195.03375	78.67219	GCN #19106	GRB 160227A� Swift-BAT refined analysis

There are 14 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).

SIMBAD

	RA*	Dec*	SIMBAD name		Query

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table²	Observatory	Query

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*		Catalogue
11.0	194.7932	78.6810	B1=20.7, B2=20.5	USNO-B1
13.3	194.7933	78.6817		NED
13.9	194.7900	78.6775		NED
19.0	194.7956	78.6746	B=21.8, R=19.7	APM-N
35.9	194.7735	78.6718	B=21.8, R=19.7	APM-N
57.2	194.7483	78.6900		NED
70.2	194.8842	78.6673	B=21.8, R=19.8	APM-N
70.7	194.9029	78.6853		NED
75.3	194.8848	78.6936	B=21.8, R=20.0	APM-N
80.2	194.8772	78.6968	B=21.7, R=20.0	APM-N

Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.

There are 125 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

Stars

	RA*	Dec*		Catalogue
6.4	194.8102	78.6810	B1=21.0, R1=19.1	USNO-B1
10.7	194.7942	78.6812	B1=20.9, B2=20.8, R2=20.7	USNO-B1
14.1	194.7896	78.6773	h=15.1, j=15.6, k=15.2	2MASS
14.2	194.7895	78.6773	B1=17.1, B2=17.0, I=16.1, R1=15.9, R2=16.1	USNO-B1
55.5	194.7487	78.6899	h=14.5, j=14.8, k=14.4	2MASS
55.6	194.7487	78.6899	B1=16.5, B2=16.5, I=15.3, R1=15.5, R2=15.8	USNO-B1
64.6	194.8342	78.6623	B2=21.0, R1=20.0	USNO-B1
79.5	194.7308	78.6630	R1=19.7, R2=20.2	USNO-B1
85.0	194.6865	78.6775	R1=19.6, R2=20.3	USNO-B1
87.4	194.6834	78.6770	B1=19.2, B2=18.4, I=18.0, R1=18.1, R2=18.3	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 88 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.