Skip banner and navigation tools.

Home > GRB region information > 1163401

Swift Trigger: 1163401

Presumed name: GRB 230409B

Back to trigger list.

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

BAT	21h 58m 07.20s, +52° 51′ 14.4″
position:	(329.530, +52.854 ± 180″)
XRT	21h 58m 03.59s, +52° 49′ 56.6″
position:	(329.51496, 52.83238 ± 1.9″)
UVOT	No position available.
Galactic NHI:	6.12×1021 cm-2
Galactic E(B-V):	1.202 mag

Best RA:	21h 58m 03.59s	= 329.51496 d
Best Dec:	+52° 49′ 56.6″	= 52.83238 d
Gal Lat:	-1.59
Gal Long:	98.42
Sun angle:	59.71°, 3.2 hr West

---

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 11 SPER messages, and 1 objects have been found

• • Object 1 - enhanced position.
  • RA (J2000) : 21 58 03.62 (52.83238)
  • Dec (J2000): +52 49 56.6 ( 52.83305)
  • Error (90%): 1.9
  • Counts in Source: 725

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	Date reported	Source	Misc	Query
0.4′′	329.51488	52.83228		GCN #33592	GRB 230409B: Swift detection of a burst
1.1′′	329.51474	52.83212		GCN #33594	GRB 230409B: Enhanced Swift-XRT position
2.1′′	329.51580	52.83210		GCN #33595	GRB 230409B: Swift/UVOT Detection
2.4′′	329.51583	52.83197		GCN #33598	GRB 230409B: Swift-BAT refined analysis
37.8′′	329.50800	52.82277		GCN #33608	GRB 230409B: Mondy optical upper limit

There are 12 matches in total. See the full table for details.

---

Catalogue Searches. Searched 200′ 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
97.7	329.4720	52.8403	TYC 3968-836-1	B=12.56, G=12.253281, H=11.508, J=11.602, K=11.522, V=12.30
161.2	329.4829	52.8727	[ABC90] cyc 58	G=14.507000, H=8.154, J=9.790, K=6.945, V=17
182.1	329.4345	52.8465	TYC 3968-161-1	B=12.33, G=12.508884, H=11.508, J=11.582, K=11.419, V=12.67
185.0	329.5666	52.8732	TYC 3968-1442-1	B=11.99, G=11.708140, H=10.353, J=10.641, K=10.304, V=11.73
189.5	329.4705	52.8777	Hetzler I 14	B=12.84, G=8.661266, H=3.50, J=4.699, K=2.98, V=11.59

There are 5 SIMBAD objects within the position error. The full list is here.

* 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
4.2	329.5147	52.8335		B1=19.6, B2=19.8, I=17.9, R1=17.9, R2=18.2	USNO-B1
5.2	329.5129	52.8317			NED
9.4	329.5142	52.8350			NED
12.8	329.5153	52.8288		B1=19.3, B2=20.2, I=17.9, R1=18.4, R2=18.9	USNO-B1
13.0	329.5179	52.8356			NED
13.4	329.5178	52.8357		B1=19.7, I=17.9, R1=18.6, R2=18.5	USNO-B1
14.5	329.5213	52.8333			NED
19.9	329.5112	52.8374		B1=18.9, B2=19.0, I=17.3, R1=17.6, R2=17.6	USNO-B1
20.3	329.5112	52.8375			NED
22.1	329.5250	52.8314			NED

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

There are 836 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
5.2	329.5129	52.8316	h=15.7, j=16.6, k=15.5	2MASS
9.4	329.5142	52.8350	h=15.5, j=15.8, k=15.5	2MASS
9.8	329.5144	52.8351	B1=18.0, B2=18.3, I=16.4, R1=16.9, R2=16.8	USNO-B1
13.0	329.5178	52.8356	h=15.9, j=16.4, k=15.9	2MASS
14.5	329.5214	52.8335	h=15.3, j=15.7, k=14.9	2MASS
15.0	329.5216	52.8336	I=17.6, R1=19.0, R2=19.0	USNO-B1
20.3	329.5113	52.8376	h=15.6, j=16.5, k=16.7	2MASS
22.1	329.5250	52.8315	h=15.6, j=16.4, k=14.9	2MASS
22.8	329.5254	52.8316	B1=18.5, B2=18.7, I=17.4, R1=17.6, R2=17.0	USNO-B1
23.8	329.5154	52.8390	h=13.0, j=13.7, k=12.8	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 844 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.