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Stellar Occultation by (22721) 1998 ST50 on 2022-01-15 (20:18:26 UT)



Event Details
 Occultation UUID [and db] : 7b163fec-ff3a-4a69-ba26-072c156d9837 [observed]

 Occultation Date + Time   : 2022-01-15 at 20:18:26 UT +/- 0.04 min  [1]
 Object Designation        : (22721) 1998 ST50
 Star Designation          : GDR3 0154139680401501056
 Star Coordinates (ICRF)   : RA = 04 57 40.6312, DE = +27 48 09.370  [2]
 Star Magnitudes           : G = 14.57 mag, RP = 13.56 mag, BP = 15.62 mag
 Object Magnitude          : V = 18.56 mag
 Estimated Magnitude Drop  : 4.0 mag
 Estimated Max. Duration   : 0.8 sec
 Object Mean Diameter      : 6 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 7.5 km/s
 Elongation to Moon & Sun  : 16° (sunlit = 96%), Sun = 140°
 Cross-track uncertainty   : 2.0 mas = 3 km = 0.52 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#45

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


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