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Stellar Occultation by (337451) 2001 RS85 on 2023-10-19 (03:12:59 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] : 2bff2a80-ddb4-11f0-547e-10485fd61501 [observed]

 Occultation Date + Time   : 2023-10-19 at 03:12:59 UT +/- 1.19 min  [1]
 Object Designation        : (337451) 2001 RS85
 Star Designation          : GDR3 0187872594064739456
 Star Coordinates (ICRF)   : RA = 05 16 40.0390, DE = +39 02 44.613  [2]
 Star Magnitudes           : G = 9.01 mag, RP = 8.87 mag, BP = 9.08 mag
 Object Magnitude          : V = 20.2 mag
 Estimated Magnitude Drop  : 11.2 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 7.2 km/s
 Object Mean Diameter      : 2.5 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.3017 arcs/min @ PA = 7 deg
 Horizontal Parallax       : 4.4800 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 168° (sunlit = 19%), Sun = 123°
 Cross-track uncertainty   : 27.7 mas = 39 km = 15.77 path-width (1-sig)
 RUWE and duplicate source : 0.84 mas, dup.src = 1  (0:false, 1:true)

 Ephemeris Reference       : JPL23
 Note                      : FP:true

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


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