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Swift Trigger: 874334

Presumed name: GRB 181202A

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Related pages: Burst Analyser | Enhanced position | Light curve | Spectrum | Image | XRT Catalogue entry | Download obs data | GCN Notices

BAT	18h 42m 58.80s, +27° 57′ 03.6″
position:	(280.745, 27.951 ± 180″)
XRT	18h 42m 56.50s, +27° 57′ 33.5″
position:	(280.7354, 27.9593 ± 2.1″)
UVOT	18h 42m 56.35s, +27° 57′ 34.9″
position:	(280.7348, +27.9597 ± 0.6″)
Galactic NHI:	1.08×100 cm-2
Galactic E(B-V):	0.166 mag

Best RA:	18h 42m 56.35s	= 280.7348 d
Best Dec:	+27° 57′ 34.9″	= +27.9597 d
Gal Lat:	14.06
Gal Long:	57.44
Sun angle:	58.99°, -2.2 hr East of Sun

¹Sper #8 auto processing.

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GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

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Sun angle for this burst.

UVOT data

No UVOT images are currently available.

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XRT SPER data

SPER results page for this trigger.

There are 11 SPER messages, and 1 objects have been found

• • Object 1 - enhanced position.
  • RA (J2000) : 18 42 56.47 (27.9593)
  • Dec (J2000): +27 57 33.5 ( 27.95912)
  • Error (90%): 2.0
  • Counts in Source: 138

See the SPER page for details of how this position was produced.

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Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Date reported	Source	Misc	Query
0.4′′	280.73492	27.95972		GCN #23498	GRB 181202A: Swift/UVOT Detection
0.4′′	280.73492	27.95972		GCN #23482	GRB 181202A: Swift detection of a burst with an optical counterpart
0.4′′	280.73491	27.95964		GCN #23483	GRB 181202A: Enhanced Swift-XRT position
58.9′′	280.73708	27.97594		GCN #23489	GRB 181202A: Swift-BAT refined analysis

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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
123.4	280.7001	27.9450	TYC 2116-828-1	B=12.29, G=11.8345, H=11.328, J=11.394, K=11.299, V=12.04
125.3	280.6961	27.9575	HD 336661	B=9.78, G=8.1579, H=5.714, J=6.389, K=5.568, V=8.52

* 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*	Redshift		Catalogue	Query
15.9	280.7396	27.9594			NED
19.6	280.7304	27.9558			NED
23.2	280.7275	27.9606			NED
24.5	280.7271	27.9586			NED
25.4	280.7322	27.9528		B1=16.3, B2=16.3, I=15.2, R1=15.3, R2=15.6	USNO-B1
25.5	280.7275	27.9605		B1=19.4, B2=18.9, I=17.1	USNO-B1
25.7	280.7317	27.9531			NED
26.0	280.7273	27.9586		I=18.0, R1=19.4, R2=19.5	USNO-B1
29.8	280.7375	27.9519			NED
30.5	280.7279	27.9536			NED

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

There are 318 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	Query
13.8	280.7397	27.9596	B2=21.5, I=18.0, R1=18.8, R2=19.2	USNO-B1
14.0	280.7398	27.9595	h=16.1, j=16.7, k=15.8	2MASS
17.2	280.7399	27.9566	B1=20.6, B2=20.3, I=19.0, R1=19.4, R2=19.8	USNO-B1
19.9	280.7306	27.9557	B1=19.7, B2=19.6, I=17.9, R1=18.2, R2=18.0	USNO-B1
20.1	280.7305	27.9558	h=16.1, j=17.0, k=15.8	2MASS
25.3	280.7276	27.9606	h=15.7, j=16.5, k=15.9	2MASS
25.6	280.7322	27.9528	h=14.0, j=14.4, k=13.9	2MASS
26.2	280.7272	27.9586	h=16.1, j=16.8, k=15.8	2MASS
27.4	280.7377	27.9519	B1=18.5, B2=18.4, I=16.7, R1=16.9, R2=17.3	USNO-B1
27.8	280.7377	27.9518	h=15.9, j=16.1, k=15.6	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 390 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.