The Neil Gehrels Swift Observatory

General Information:

Swift Name:SWIFT J1225.8+1240
RA:186.4449 (J2000)
Dec:12.6705 (J2000)
S/N:143.41
Counterpart Name:NGC 4388
Ctpt RA:186.4448 (J2000)
Ctpt Dec:12.6621 (J2000)
Flux:239.43 (236.32, 242.55) × 10-12 ergs s-1 cm-2, (14-195 keV)
Gamma:1.78 (1.76, 1.79)
Chi2r:10.23
Redshift:0.0084
Luminosity:43.59 log[ergs s-1] (14-195 keV)
AS:1
Class:5
Type:Sy2

BAT 157-Month Lightcurve:

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1225.8+1240

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1225.8+1240

Lightcurve:

BAT 157-Month Spectrum:

BAT Spectrum for SWIFT J1225.8+1240

BAT Spectrum for SWIFT J1225.8+1240

BAT Hard X-ray Transient Source Page:

Data last modified: 15 Sep 2025
Page last modified: 03 Jun 2025