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Swift Trigger: 808483

Presumed name: GRB 180204A

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

BAT	22h 00m 28.32s, +30° 50′ 45.6″
position:	(330.118, +30.846 ± 180″)
XRT	22h 00m 32.06s, +30° 50′ 17.2″
position:	(330.1336, 30.8381 ± 2.2″)
UVOT	No position available.
Galactic NHI:	7.43×100 cm-2
Galactic E(B-V):	0.102 mag

Best RA:	22h 00m 32.06s	= 330.1336 d
Best Dec:	+30° 50′ 17.2″	= 30.8381 d
Gal Lat:	-19.12
Gal Long:	84.86
Sun angle:	48.74°, -0.8 hr East of Sun

¹Sper #3 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

Blink images with DSS (link via GSFC)

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XRT SPER data

SPER results page for this trigger.

There are 5 SPER messages, and 1 objects have been found

• • Object 1 - enhanced position.
  • RA (J2000) : 22 00 32.00 (30.8381)
  • Dec (J2000): +30 50 17.1 ( 30.83854)
  • Error (90%): 2.1
  • Counts in Source: 333

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
0.1′′	330.13358	30.83808		GCN #22375	GRB 180204A: Swift detection of a short burst
0.8′′	330.13333	30.83808		GCN #22376	GRB 180204A: Swift-XRT refined Analysis
1.3′′	330.13329	30.83785		GCN #22377	GRB 180204A: Enhanced Swift-XRT position
59.8′′	330.12300	30.85200		GCN #22380	GRB 180204A: 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
66.2	330.1303	30.8563	TYC 2719-579-1	B=13.12, G=12.768, H=11.444, J=11.741, K=11.384, V=12.65
76.5	330.1231	30.8573	TYC 2719-555-1	B=13.12, G=11.878, H=9.818, J=10.394, K=9.715, V=11.69

* 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
2.4	330.1329	30.8378		B2=20.4, I=18.6, R1=19.1, R2=19.4	USNO-B1
2.4	330.1329	30.8379		B=21.4, R=19.5	APM-N
23.9	330.1299	30.8323		I=18.3, R1=19.7, R2=19.5	USNO-B1
31.5	330.1242	30.8348		B1=20.4, B2=20.6, I=18.3, R1=19.6, R2=19.5	USNO-B1
38.7	330.1388	30.8283			NED
38.9	330.1420	30.8300		B=21.0, R=18.9	APM-N
54.1	330.1434	30.8257		I=18.7, R1=17.5, R2=20.2	USNO-B1
55.8	330.1285	30.8530		B=20.7, R=19.1	APM-N
56.2	330.1506	30.8325		B=20.9, R=18.6	APM-N
62.5	330.1214	30.8520		B=20.7, R=19.1	APM-N

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

There are 92 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
27.6	330.1403	30.8431	B1=20.4, R1=19.3, R2=19.9	USNO-B1
39.4	330.1422	30.8300	B1=19.9, B2=19.5, I=17.8, R1=18.3, R2=18.6	USNO-B1
39.5	330.1420	30.8298	B1=20.0, R1=18.5	USNO-B1
43.2	330.1405	30.8485	h=14.8, j=15.5, k=14.9	2MASS
43.4	330.1405	30.8486	B1=17.9, B2=18.0, I=16.4, R1=16.6, R2=17.0	USNO-B1
46.6	330.1463	30.8312	B1=17.1, B2=17.1, I=15.5, R1=16.0, R2=16.3	USNO-B1
46.7	330.1463	30.8311	h=14.5, j=15.0, k=14.3	2MASS
55.3	330.1286	30.8528	h=16.2, j=16.9, k=15.3	2MASS
55.9	330.1285	30.8530	B1=19.8, B2=20.1, I=18.0, R1=18.6, R2=18.9	USNO-B1
55.9	330.1504	30.8324	h=15.5, j=16.8, k=15.8	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 222 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.