Swift Trigger: 852903

Presumed name: GRB 180812A

BAT	16^h 23^m 32.64^s, +74° 40′ 12.0″
position:	(245.886, 74.670 ± 180″)
XRT	16^h 23^m 20.30^s, +74° 39′ 52.2″
position:	(245.8346, 74.6645 ± 2.1″)
UVOT	No position available.
Galactic N_HI:	3.83×10⁰ cm^-2
Galactic E(B-V):	0.040 mag

Best RA:	16^h 23^m 20.30^s	= 245.8346 d
Best Dec:	+74° 39′ 52.2″	= 74.6645 d

Gal Lat:	35.55
Gal Long:	107.89

Sun angle:	79.19°, -6.9 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

No UVOT images are currently available.

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) : 16 23 20.27 (74.6644)
- Dec (J2000): +74 39 52.0 ( 74.66425)
- Error (90%): 2.1
- Counts in Source: 159

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
0.8′′	245.83465	74.66472	GCN #23131	GRB 180812A: Enhanced Swift-XRT position
0.9′′	245.83521	74.66469	GCN #23138	GRB 180812A: Swift/UVOT Detection
1.5′′	245.83600	74.66470	GCN #23129	GRB 180812A: Swift detection of a burst
34.5′′	245.83900	74.67400	GCN #23136	GRB 180812A: Swift-BAT refined analysis

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
171.0	245.6558	74.6692	RX J1622.6+7440

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table²
164.7	245.6621	74.6680	0.02008 +/- 0.005331	ROSAT
166.6	245.6600	74.6676	0.0209 +/- 0.0058	ROSAT
166.6	245.6599	74.6676	0 +/- 0	ROSAT
171.0	245.6558	74.6692	0.018 +/- 0.005	ROSAT

Queried the X-ray MASTER catalogue.

There are 4 X-ray sources within the position error. The full list is here.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*		Catalogue
25.0	245.8084	74.6640	R1=19.4, R2=20.0	USNO-B1
38.1	245.8721	74.6607	B=20.8, R=19.5	APM-N
40.6	245.8064	74.6560	B=21.9, R=20.0	APM-N
41.4	245.8703	74.6579	B=21.9, R=19.7	APM-N
45.6	245.8814	74.6672	B=21.9, R=19.8	APM-N
45.9	245.8708	74.6728		NED
46.9	245.7896	74.6592		NED
50.8	245.8699	74.6751	B2=21.8, I=19.0, R1=19.6, R2=19.4	USNO-B1
54.3	245.8165	74.6788	B2=20.5, R1=19.5	USNO-B1
55.9	245.8149	74.6791	B=21.5, R=18.1	APM-N

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

There are 103 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
37.5	245.8714	74.6608	B1=20.1, B2=20.5, I=19.0, R1=19.3, R2=19.7	USNO-B1
45.8	245.8708	74.6729	B1=19.8, B2=19.9, I=17.1, R1=18.0, R2=18.0	USNO-B1
45.9	245.8709	74.6729	h=15.3, j=15.9, k=15.4	2MASS
46.8	245.7896	74.6592	h=16.0, j=16.3, k=15.7	2MASS
47.0	245.7892	74.6593	B1=17.9, B2=18.4, I=17.2, R1=17.6, R2=17.6	USNO-B1
47.9	245.8782	74.6579	R1=19.6, R2=20.1	USNO-B1
51.6	245.8876	74.6615	B1=20.6, B2=21.1, R2=20.1	USNO-B1
56.0	245.8148	74.6791	B1=20.3, B2=19.7, I=17.4, R1=18.5, R2=17.7	USNO-B1
57.3	245.8730	74.6767	B1=20.4, B2=21.1, R1=19.3	USNO-B1
62.6	245.7731	74.6707	R1=19.4, R2=20.0	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 111 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.