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Home > GRB region information > 821902

Swift Trigger: 821902

Presumed name: GRB 180404B

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

BAT	03h 33m 32.16s, -50° 11′ 42.0″
position:	(53.384, -50.195 ± 180″)
XRT	03h 33m 34.83s, -50° 12′ 53.1″
position:	(53.39512, -50.21474 ± 3.8″)
UVOT	03h 33m 34.22s, -50° 12′ 54.0″
position:	(53.3926, -50.2150 ± 0.8″)
Galactic NHI:	1.09×100 cm-2
Galactic E(B-V):	0.012 mag

Best RA:	03h 33m 34.22s	= 53.3926 d
Best Dec:	-50° 12′ 54.0″	= -50.2150 d
Gal Lat:	-51.56
Gal Long:	260.95
Sun angle:	65.75°, -2.7 hr East of Sun

¹Sper #1 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 1 SPER messages, and 1 objects have been found

• • Object 1
  • RA (J2000) : 03 33 34.83 ( 53.39512)
  • Dec (J2000): -50 12 53.1 ( -50.21474)
  • Error (90%): 3.795"
  • Counts in Source: 99

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
0.2′′	53.39267	-50.21503		GCN #22590	GRB 180404B: Swift detection of a burst with an optical counterpart
0.2′′	53.39263	-50.21506		GCN #22611	GRB 180404B: Swift/UVOT Detection
1.8′′	53.39267	-50.21550		GCN #22594	GRB 180404B: Enhanced Swift-XRT position
8.9′′	53.39000	-50.21317		GCN #22601	GRB 180404B: 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
131.8	53.3413	-50.2272	IRAS F03318-5023
186.6	53.4759	-50.2183	TYC 8066-547-1	B=13.05, G=12.172, H=11.22, J=11.413, K=11.168, V=12.60

* 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
5.3	53.3971	-50.2140		B=22.2	SSS
19.1	53.3983	-50.2111			NED
41.8	53.4025	-50.2053			NED
50.1	53.3729	-50.2214			NED
61.7	53.3679	-50.2219			NED
65.8	53.4229	-50.2190		B=20.8, R2=18.9, i=18.8	SSS
67.6	53.4192	-50.2072			NED
67.9	53.4183	-50.2058			NED
70.7	53.4225	-50.2189		Mag=20.36	NED
73.0	53.3645	-50.2198		B=20.9, R2=19.4	SSS

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

There are 117 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
38.1	53.4026	-50.2053	h=15.4, j=16.1, k=15.2	2MASS
38.3	53.3860	-50.2059	R1=20.9, R2=22.0	USNO-B1
38.5	53.4028	-50.2052	B2=21.1, I=17.6, R1=19.3, R2=19.2	USNO-B1
43.5	53.3762	-50.2150	B2=20.8, I=18.1, R1=19.1, R2=19.9	USNO-B1
55.7	53.3732	-50.2213	B2=19.4, I=15.9, R1=17.4, R2=17.6	USNO-B1
55.7	53.3732	-50.2213	h=14.4, j=15.0, k=14.2	2MASS
61.4	53.4192	-50.2074	B2=22.9, R1=20.8, R2=21.7	USNO-B1
64.8	53.4228	-50.2179	B2=21.4, R1=20.7, R2=20.4	USNO-B1
65.2	53.4188	-50.2048	B2=23.5, R1=20.9, R2=21.5	USNO-B1
65.6	53.4229	-50.2188	B2=20.4, R1=19.3, R2=19.5	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 101 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.