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GRB position information:
GRB_RA: 263.105d {+17h 32m 25s} (J2000),
GRB_DEC: +54.060d {+54d 03' 36"} (J2000),
GAL_COORDS: 81.69, 33.07 [deg] galactic lon,lat of the burst (or transient)
Sun angle: 100.64
Moon angle: 76.25

MET of BAT trigger is 641200991.02 using SOD of 26564.10

E(B-V) report for trigger 1045571 using FOM Will_Observe of (263.105,+54.060)
Reference is GCN_Notice_Tue_27_Apr_21_13:09:42_UT
E(B-V) = 0.044

Bandpass A_lambda
(microns) (mag)
U (0.34) 0.242
B (0.44) 0.192
V (0.54) 0.148
R (0.65) 0.119
I (0.81) 0.087
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