Location of GRB201215266

GRB Properties

Parameters calculated by MPE

Property	Value	Error (1 σ statistical)
Trigger Number	629706213
Trigger Time	Dec. 15, 2020, 06:23:28
Data Timestamp	Dec. 15, 2020, 06:32:39
Localization Timestamp	Dec. 15, 2020, 11:31:54
Balrog Ra [deg]	186.4	3.6
Balrog Dec [deg]	16.0	3.4
Error radius 1 σ [deg]	5.3
Error radius 2 σ [deg]	8.5
Estimated systematic error [deg]	2
Fitted Model	band_function
Spectral Parameter K [photons/cm^2/keV*s]	5.1	4.9
Spectral Parameter Alpha	1.2	0.86
Spectral Parameter Beta	-2	0.085
Spectral Parameter XP	50	6.7
Satellite Phi [deg]	81.34
Satellite Theta [deg]	-3.69

Parameters from external Source

Property	Value
Swift Ra [deg]
Swift Dec [deg]
Most likely	GRB 84.0%
Second most likely	DISTANT_PARTICLES 14.0%

GRB Location Alert

GRB 201215A: BALROG localization (Fermi Trigger 629706213 / GRB 201215266)

J. Burgess, F. Kunzweiler, B. Biltzinger, F. Berlato, & J. Greiner (all MPE Garching) report:

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
629706213 at 06:23:28 on 15 Dec. 2020 were automatically fitted for spectrum
and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;
Berlato et al. 2019, ApJ 873, 60).

The best-fit position (1 sigma statistical errors) is:
RA(2000.0) = 192.9+/-3.8 deg
Decl.(2000.0) = 18.1+/-3.8 deg
We estimate an additional systematic error of 2 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB201215266/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB201215266/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB201215266/json