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Stellar Occultation by (31227) 1998 BC41 on 2022-12-13 (22:25:16 UT)

CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.


Event Details
 Occultation UUID [and db] : 38e54780-ddb3-11f0-547e-e8ade7199f98 [observed]

 Occultation Date + Time   : 2022-12-13 at 22:25:16 UT +/- 0.0 min  [1]
 Object Designation        : (31227) 1998 BC41
 Star Designation          : GDR3 0872912009393594112
 Star Coordinates (ICRF)   : RA = 07 21 58.8159, DE = +27 17 06.143  [2]
 Star Magnitudes           : G = 9.86 mag, RP = 8.84 mag, BP = 10.93 mag
 Object Magnitude          : V = 16.93 mag
 Estimated Magnitude Drop  : 7.1 mag
 Estimated Max. Duration   : 1.0 sec
 Speed of the shadow       : 12.0 km/s
 Object Mean Diameter      : 11.7 km  (src: astorb) => apparent = 8 mas
 Apparent Motion           : 0.4733 arcs/min @ PA = 267 deg
 Horizontal Parallax       : 4.1880 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 37° (sunlit = 73%), Sun = 153°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#67
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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