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Home > GRB region information > 826428

Swift Trigger: 826428

Presumed name: GRB 180418A

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

BAT	11h 20m 26.88s, +24° 57′ 21.6″
position:	(170.112, 24.956 ± 180″)
XRT	11h 20m 28.94s, +24° 55′ 57.9″
position:	(170.12059, 24.93276 ± 3.9″)
UVOT	No position available.
Galactic NHI:	1.02×100 cm-2
Galactic E(B-V):	0.017 mag

Best RA:	11h 20m 28.94s	= 170.12059 d
Best Dec:	+24° 55′ 57.9″	= 24.93276 d
Gal Lat:	69.48
Gal Long:	213.94
Sun angle:	130.05°, -9.6 hr East of Sun

¹Sper #7 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 11 SPER messages, and 1 objects have been found

• • Object 1
  • RA (J2000) : 11 20 28.90 ( 170.12042)
  • Dec (J2000): +24 55 57.4 ( 24.93260)
  • Error (90%): 3.911"
  • Counts in Source: 24

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
0.0′′	170.12059	24.93276		GCN #22649	GRB 180418A: Swift-XRT observations
3.3′′	170.12153	24.93309		GCN #22650	GRB 180418A: Enhanced Swift-XRT position
3.6′′	170.12167	24.93300		GCN #22647	GRB 180418A: KAIT Optical Afterglow Candidate
3.9′′	170.12171	24.93311		GCN #22665	GRB 180418A: Swift/UVOT Detection
46.4′′	170.13167	24.92469		GCN #22658	GRB 180418A: Swift-BAT refined analysis
88.1′′	170.11250	24.95611		GCN #22646	GRB 180418A: Swift detection of a short burst

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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

* 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
10.9	170.1192	24.9300	1.135000	Mag=21.2	NED
11.1	170.1191	24.9300		B=20.9, R=19.9	APM-N
13.4	170.1229	24.9297		Mag=25.5	NED
16.5	170.1256	24.9331		R=22.3, g=23.3, i=22.5, u=22.9, z=22.9	SDSS
16.6	170.1254	24.9331	0.242000	Mag=22.6	NED
24.7	170.1257	24.9277		R=24.5, g=25.0, i=25.5, u=24.1, z=20.6	SDSS
26.2	170.1125	24.9339		Mag=23.1	NED
29.1	170.1125	24.9294	0.695000	Mag=22.6	NED
29.4	170.1175	24.9406	0.729000	Mag=23.7	NED
29.5	170.1263	24.9392	0.320000	Mag=23.0	NED

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

There are 677 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
10.7	170.1193	24.9300	B1=20.7, B2=21.1, R2=19.9	USNO-B1
10.8	170.1193	24.9300	I=20.8, R=20.9, g=21.1, u=21.3, z=20.8	SDSS
13.4	170.1228	24.9296	I=23.6, R=23.1, g=25.6, u=25.3, z=22.9	SDSS
39.1	170.1263	24.9423	I=21.0, R=21.2, g=22.0, u=23.0, z=20.4	SDSS
40.5	170.1327	24.9305	I=20.8, R=20.8, g=21.0, u=21.3, z=20.7	SDSS
43.2	170.1083	24.9282	I=25.0, R=22.9, g=25.5, u=25.4, z=23.4	SDSS
44.2	170.1337	24.9296	I=22.4, R=24.8, g=24.7, u=23.9, z=23.3	SDSS
48.0	170.1340	24.9274	B1=18.7, B2=18.9, I=15.4, R1=16.2, R2=16.3	USNO-B1
48.0	170.1340	24.9273	h=13.9, j=14.5, k=13.7	2MASS
48.2	170.1341	24.9273	I=16.1, R=16.8, g=18.2, u=20.6, z=15.8	SDSS

Queried USNO-B1, SDSS, 2MASS.

There are 114 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.