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Stellar Occultation by (337451) 2001 RS85 on 2023-10-19 (02:53:32 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-c68f67fdfb8f [observed]

 Occultation Date + Time   : 2023-10-19 at 02:53:32 UT +/- 1.18 min  [1]
 Object Designation        : (337451) 2001 RS85
 Star Designation          : GDR3 0187872594064740352
 Star Coordinates (ICRF)   : RA = 05 16 39.9565, DE = +39 02 38.822  [2]
 Star Magnitudes           : G = 10.38 mag, RP = 10.01 mag, BP = 10.6 mag
 Object Magnitude          : V = 20.2 mag
 Estimated Magnitude Drop  : 9.8 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       : 4.4790 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 168° (sunlit = 19%), Sun = 123°
 Cross-track uncertainty   : 27.7 mas = 39 km = 15.78 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 1  (0:false, 1:true)

 Ephemeris Reference       : JPL#23
 Note                      : FP:true

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


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