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Stellar Occultation by (110989) 2001 US197 on 2020-09-27 (22:31:58 UT)



Event Details
 Occultation UUID [and db] : 1571b0d2-9cf4-4d08-aa46-5571b1b63386 [observed]

 Occultation Date + Time   : 2020-09-27 at 22:31:58 UT +/- 1.87 min  [1]
 Object Designation        : (110989) 2001 US197
 Star Designation          : GDR3 4232804241462150144
 Star Coordinates (ICRF)   : RA = 20 31 03.0663, DE = +03 11 20.375  [2]
 Star Magnitudes           : G = 12.3 mag, RP = 11.52 mag, BP = 12.96 mag
 Object Magnitude          : V = 20.27 mag
 Estimated Magnitude Drop  : 8.0 mag
 Estimated Max. Duration   : 0.5 sec
 Object Mean Diameter      : 4 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 7.7 km/s
 Elongation to Moon & Sun  : 28° (sunlit = 86%), Sun = 123°
 Cross-track uncertainty   : 5.0 mas = 9 km = 2.55 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#35

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


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