Swift Trigger: 765130

Presumed name: GRB 170728B

BAT	15^h 52^m 10.56^s, +70° 08′ 31.2″
position:	(238.044, 70.142 ± 180″)
XRT	15^h 51^m 55.34^s, +70° 07′ 21.7″
position:	(237.9806, 70.1227 ± 2.0″)
UVOT	No position available.
Galactic N_HI:	2.90×10⁰ cm^-2
Galactic E(B-V):	0.028 mag

Best RA:	15^h 51^m 55.34^s	= 237.9806 d
Best Dec:	+70° 07′ 21.7″	= 70.1227 d

Gal Lat:	39.97
Gal Long:	104.61

Sun angle:	78.81°, -7.3 hr East of Sun

¹Sper #13 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

white image

Blink images with DSS (link via GSFC)

XRT SPER data

SPER results page for this trigger.

There are 13 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 15 51 55.32 (70.1228)
- Dec (J2000): +70 07 22.1 ( 70.12195)
- Error (90%): 2.0
- Counts in Source: 1892

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
0.0′′	237.98060	70.12270	GCN #21376	GRB 170728B: Swift-XRT refined Analysis
0.8′′	237.98104	70.12256	GCN #21395	GRB 170728B: VLA radio afterglow detection
0.9′′	237.98112	70.12253	GCN #21373	GRB 170728B: position of the TNG optical counterpart
1.1′′	237.98132	70.12253	GCN #21419	GRB 170728B: TShAO� SAO RAS and AbAO optical observations
1.6′′	237.98125	70.12231	GCN #21377	GRB 170728B: Enhanced Swift-XRT position
2.0′′	237.98130	70.12220	GCN #21371	GRB 170728B: Swift detection of a short burst
62.6′′	238.01875	70.11111	GCN #21384	GRB 170728B� Swift-BAT refined analysis

There are 18 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
23.7	237.9637	70.1195	B=20.6, R=19.7	APM-N
28.1	238.0017	70.1258	B=21.6, R=20.0	APM-N
33.7	237.9542	70.1200	I=18.7, R1=19.5, R2=20.1	USNO-B1
57.7	237.9541	70.1095	B=21.5, R=20.0	APM-N
58.8	238.0239	70.1297	B=21.5, R=20.0	APM-N
63.3	237.9729	70.1053	h=14.5, j=15.3, k=14.0	2MASS
63.8	237.9725	70.1053		NED
73.2	237.9994	70.1420	B=21.7, R=19.9	APM-N
75.2	238.0363	70.1139	B=20.1, R=19.4	APM-N
81.0	238.0468	70.1230	B=21.7, R=20.0	APM-N

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

There are 67 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
23.2	237.9641	70.1195	B1=20.4, B2=20.5, R2=19.5	USNO-B1
41.5	238.0135	70.1255	B1=17.6, B2=17.4, I=15.4, R1=16.2, R2=16.0	USNO-B1
41.6	238.0136	70.1254	h=14.6, j=15.2, k=14.7	2MASS
63.5	237.9726	70.1053	B1=20.2, B2=20.2, I=16.4, R1=17.6, R2=17.7	USNO-B1
63.9	237.9728	70.1052	h=14.6, j=15.5, k=14.7	2MASS
66.1	238.0297	70.1303	B1=20.9, B2=20.5, R1=19.5, R2=19.6	USNO-B1
67.6	237.9415	70.1360	B2=20.9, R1=20.3, R2=20.1	USNO-B1
70.5	237.9782	70.1031	B1=19.1, B2=18.7, I=17.6, R1=18.1, R2=17.7	USNO-B1
74.8	238.0362	70.1140	B1=20.3, B2=20.2, R2=19.3	USNO-B1
78.8	238.0207	70.1398	B2=20.3, R2=19.9	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 94 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.