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This trigger is identified with the interesting source NGC4515,
which is entry no. 12571 in the on-board catalog.
It is a source type 15 in the catalog.
The (RA,Dec) of NGC4515 is (188.27060,16.26549).
The diameter of the source is 1.6 arcmin.
The source has a magnitude of 13..
The distance from the source if 0.185 deg.

GRB position information:
GRB_RA: 188.083d {+12h 32m 20s} (J2000),
GRB_DEC: +16.309d {+16d 18' 32"} (J2000),
GAL_COORDS: 279.70, 78.31 [deg] galactic lon,lat of the burst (or transient)
Sun angle: 72.59
Moon angle: 43.56

MET of BAT trigger is 565648120.00 using SOD of 73697.97

E(B-V) report for trigger 874754 using BAT GRB Position of (188.083,+16.309)
Reference is GCN_Notice_Tue_04_Dec_18_20:29:36_UT
E(B-V) = 0.029

Bandpass A_lambda
(microns) (mag)
U (0.34) 0.158
B (0.44) 0.125
V (0.54) 0.096
R (0.65) 0.078
I (0.81) 0.056

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