Swift Trigger: 864584

Presumed name: GRB 180930A

BAT	05^h 07^m 28.80^s, -25° 08′ 16.8″
position:	(76.870, -25.138 ± 180″)
XRT	05^h 07^m 27.24^s, -25° 07′ 01.2″
position:	(76.8635, -25.1170 ± 2.0″)
UVOT	No position available.
Galactic N_HI:	1.93×10⁰ cm^-2
Galactic E(B-V):	0.026 mag

Best RA:	05^h 07^m 27.24^s	= 76.8635 d
Best Dec:	-25° 07′ 01.2″	= -25.1170 d

Gal Lat:	-33.14
Gal Long:	226.53

Sun angle:	106.42°, 7.3 hr West

¹Sper #4 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 16 SPER messages, and 2 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 05 07 27.19 (-25.1169)
- Dec (J2000): -25 07 00.8 ( -25.11703)
- Error (90%): 2.0
- Counts in Source: 712
- Object 2
- RA (J2000) : 05 07 41.86 ( 76.92441)
- Dec (J2000): -25 06 03.3 ( -25.10093)
- Error (90%): 3.711"
- Counts in Source: 50

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
0.7′′	76.86330	-25.11690	GCN #23280	GRB 180930A: Prompt enhanced Swift-XRT position
1.1′′	76.86317	-25.11694	GCN #23282	GRB 180930A: Enhanced Swift-XRT position
4.0′′	76.86229	-25.11719	GCN #23279	GRB 180930A: Swift detection of a burst
102.6′′	76.89400	-25.12400	GCN #23286	GRB 180930A: 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
84.2	76.8646	-25.1404	TYC 6477-830-1	B=12.649, G=11.9371, H=10.624, I=11.39, J=10.934, K=10.574, R=11.19, V=11.73, g=12.313, i=11.791, r=11.901

* 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
15.5	76.8588	-25.1162	B=21.2, R2=19.9, i=19.1	SSS
32.2	76.8574	-25.1100	B=22.2	SSS
33.0	76.8564	-25.1236	B=18.7, R2=17.5, i=16.6	SSS
33.6	76.8562	-25.1239	Mag=18.98	NED
34.4	76.8562	-25.1101	B2=21.3, R2=20.4	USNO-B1
36.0	76.8555	-25.1101	B=21.6, R2=20.2	SSS
44.9	76.8654	-25.1047	B1=21.0, R1=19.7	USNO-B1
52.0	76.8791	-25.1139	B2=19.8, I=17.7, R1=17.8, R2=18.6	USNO-B1
52.1	76.8792	-25.1139	Mag=18.98	NED
52.3	76.8587	-25.1031	Mag=18.98	NED

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

There are 87 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
15.6	76.8588	-25.1160	B2=21.2, I=18.8, R1=19.9, R2=20.1	USNO-B1
33.1	76.8564	-25.1236	B1=19.4, B2=17.2, I=16.0, R1=16.5, R2=16.2	USNO-B1
33.2	76.8564	-25.1236	h=15.3, j=15.9, k=14.8	2MASS
47.2	76.8589	-25.1046	B2=21.6, I=18.1, R1=19.1, R2=19.4	USNO-B1
52.1	76.8791	-25.1139	h=15.8, j=16.6, k=15.4	2MASS
52.3	76.8587	-25.1031	h=15.5, j=16.0, k=15.3	2MASS
52.5	76.8586	-25.1031	B1=18.1, B2=17.5, I=16.5, R1=16.7, R2=16.6	USNO-B1
56.4	76.8502	-25.1070	h=15.0, j=15.6, k=14.9	2MASS
56.5	76.8502	-25.1070	B1=20.1, B2=19.1, I=16.6, R1=17.6, R2=17.6	USNO-B1
64.2	76.8487	-25.1053	B2=21.6, I=18.3, R1=19.2, R2=20.4	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 99 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.