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This trigger is identified with the interesting source NGC4310,
which is entry no. 12182 in the on-board catalog.
It is a source type 15 in the catalog.
The (RA,Dec) of NGC4310 is (185.60950,29.20867).
The diameter of the source is 2.6 arcmin.
The source has a magnitude of 13..
The distance from the source if 0.084 deg.

GRB position information:
GRB_RA: 185.609d {+12h 22m 26s} (J2000),
GRB_DEC: +29.293d {+29d 17' 34"} (J2000),
GAL_COORDS: 192.53, 83.26 [deg] galactic lon,lat of the burst (or transient)
Sun angle: 147.58
Moon angle: 75.69

MET of BAT trigger is 541283471.99 using SOD of 73851.46

E(B-V) report for trigger 811686 using BAT GRB Position of (185.609,+29.293)
Reference is GCN_Notice_Sun_25_Feb_18_20:32:09_UT
E(B-V) = 0.023

Bandpass A_lambda
(microns) (mag)
U (0.34) 0.125
B (0.44) 0.099
V (0.54) 0.076
R (0.65) 0.061
I (0.81) 0.045

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