NOTE: uvot_fluxes_wget.pl vrs. 2020-11-03a fem at 210210d13h55m01s307065usUT
NOTE: Source region spec. is: 262.77085 14.66272 3"
NOTE: Used archived uvot source position of 262.77085  14.66272  3.00
NOTE: position reference is GCN_Circ_29444
NOTE: A UVOT position was reported in GCN_Circ_29444
NOTE: Possible detection in uu at T+297.7
NOTE: Possible detection in wh at T+85.1
NOTE: Possible detection in bb at T+552.9
NOTE: Possible detection in w1 at T+678.8
NOTE: Possible detection in vv at T+628.6
NOTE: Possible detection in w2 at T+603.5
NOTE: Possible detection in m2 at T+652.9

=========== Draft Upper Limit Circular ========

GRB 210210A: Swift/UVOT Upper Limits

***UBS*** (***INSTITUTION***) and S. L. Laha (GSFC/UMBC/CRESST)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 210210A
85 s after the BAT trigger (Laha et al., GCN Circ. 29444).
No optical afterglow consistent with the XRT position
(Goad et al. GCN Circ. 29448)
is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first
finding chart (FC) exposure and subsequent exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC            85          235          147         >16.1
u_FC               298          547          246         >15.8
white               85         1374          373         >16.4
v                  629         1250           78         >16.6
b                  553         1350           78         >16.9
u                  298         1325          304         >15.9
w1                 679         1300           78         >16.1
m2                 653         1275           78         >16.0
w2                 604         1386           85         >16.3

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.097 in the direction of the burst
(Schlegel et al. 1998).


=========== Draft Detection Circular ========

GRB 210210A: Swift/UVOT Detection

***UBS*** (***INSTITUTION***) and S. L. Laha (GSFC/UMBC/CRESST)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 210210A
85 s after the BAT trigger (Laha et al., GCN Circ. 29444).
A source consistent with the XRT position
(Goad et al. GCN Circ. 29448)
is detected in the initial UVOT exposures.

The preliminary UVOT position is:
    RA  (J2000) =  17:31:05.01 = 262.77088 (deg.)
    Dec (J2000) = +14:39:46.4  =  14.66290 (deg.)
with an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence).

Preliminary detections using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: 

Filter         T_start(s)   T_stop(s)      Exp(s)           Mag

white               85          235          147         16.14 +/- 0.03
v                  629          648           20         16.95 +/- 0.19
b                  553          573           20         16.99 +/- 0.11
u                  298          547          246         15.91 +/- 0.03
w1                 679          699           19         16.05 +/- 0.15
m2                 827          847           19         16.13 +/- 0.20
w2                 779          798           20         16.35 +/- 0.18

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.097 in the direction of the burst
(Schlegel et al. 1998).