---

bat position message for trigger 821902

--====1522808130====
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

GRB position information:
GRB_RA: 53.384d {+03h 33m 32s} (J2000),
GRB_DEC: -50.195d {-50d 11' 41"} (J2000),
GAL_COORDS: 260.92,-51.57 [deg] galactic lon,lat of the burst (or transient)
Sun angle: 65.75
Moon angle: 114.96

MET of BAT trigger is 544500724.80 using SOD of 7904.07

E(B-V) report for trigger 821902 using BAT GRB Position of (53.384,-50.195)
Reference is GCN_Notice_Wed_04_Apr_18_02:11:59_UT
E(B-V) = 0.013

Bandpass A_lambda
(microns) (mag)
U (0.34) 0.072
B (0.44) 0.057
V (0.54) 0.044
R (0.65) 0.035
I (0.81) 0.026

# Region file format: DS9 version 3.0
# Region file produced by swift_page.pl vrs. 2017-05-08 fem
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(53.384,-50.195,180")

---

xrt position message for trigger 821902

E(B-V) report for trigger 821902 using XRT Position of (53.39267,-50.21550)
Reference is GCN_Circulars-22594-Wed,_4_Apr_2018_04:18:45_-0400
E(B-V) = 0.013

Bandpass A_lambda
(microns) (mag)
U (0.34) 0.071
B (0.44) 0.057
V (0.54) 0.044
R (0.65) 0.035
I (0.81) 0.025

--====1522830376====
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
# Region file format: DS9 version 3.0
# file produced by rerun_uvot_tdrss.pl on 180404d08h26m16sUT
global color=green font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(53.39267,-50.21550,2.90")