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XRT position for GRB 210217A enhanced by UVOT field astrometry

Data were analysed using HEASOFT version 6.35.2


RA (J2000):	06h 30m 20.26s (97.58441)
Dec (J2000):	+68° 43′ 31.1′′ (68.72530)
90% Error radius:	2.1′′
Number of overlaps included in position:	5
Exposure time in final position:	1909 s

Total number of overlaps considered:	13
Total overlap time:	4091 s
Number of overlaps where no X-ray source was found:	6
Number of low-X-ray-count fits rejected:	0
Number of spurious fits rejected:	1
Number of bad astrometric corrections:	0
Number of outliers removed:	1

For details of how these positions are produced, and why some positions are rejected, see the online documentation.

All XRT GRB positions