GRB 250612A

Time: 01:02:05.82
Trigger Number: 1323295
Burst Advocate: Mike Siegel

BAT Data:

RA: ^a	250.873 16:43:29.5
Dec: ^a	-38.948 -38:56:52.8
90% Error Radius: ^b	4.3
T90: ^c	274.17
Fluence: ^d	10 (2)
1s Peak Photon Flux: ^e	0.9 (0.2)
Photon Index: ^f	2.55, PL (0.43)

90% error in parentheses,
^a J2000; ^b arcmin; ^c seconds; ^d 10^-7 erg/cm² (15-150 keV); ^e ph/cm²/sec (15-150 keV); ^f PL = simple power-law, CPL = cutoff power-law (15-150 keV)

XRT Data:

RA: ^a	n/a
Dec: ^a	n/a
90% Error Radius: ^b	n/a
Time to First Observation: ^c	n/a
Early Flux: ^d	n/a
11 Hour Flux: ^d	n/a
24 Hour Flux: ^d	n/a
Initial Temporal Index:	n/a
Spectral Index (Gamma):	n/a
Column Density (NH): ^e	n/a

Note: Please be aware that only the very basic temporal and spectral quantities are reported here. You are strongly encouraged to see the referenced GCN circulars for full details.
^a J2000; ^b arcsec; ^c seconds; ^d 10^-11 erg/cm²/s (0.3-10 keV); ^e 10²¹ cm^-2

» XRT GRB Live Catalogue
» XRT Light Curves
» XRT Spectra

UVOT Data:

RA: ^a	n/a
Dec: ^a	n/a
90% Error Radius: ^b	n/a
Time to First Observation: ^c	n/a
V Magnitude:	n/a
Other Filter Magnitudes:	n/a

^a J2000; ^b arcsec; ^c seconds

Other Burst Info:

Redshift:

Host Galaxy:

Other Observatory Detections:

Comments:

Due to a Moon observing constraint, Swift did not slew to the BAT position until 11:59 UT on 2025 June 12. Given the BAT detection at a Galactic latitude of 4.6 deg and the absence of a detected X-ray afterglow in XRT observations ~ 17 hours post-trigger, a Galactic origin of this source remains plausible.

References:

BAT: GCN 40694; GCN 40782
XRT:
UVOT:
Radio:
Redshift:
Host:
Other:

National Aeronautics and Space Administration