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Stellar Occultation by (138637) 2000 RN20 on 2023-09-27 (02:24:39 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] : 13e21200-ddb4-11f0-547e-450dfe5f9c5e [observed]

 Occultation Date + Time   : 2023-09-27 at 02:24:39 UT +/- 0.03 min  [1]
 Object Designation        : (138637) 2000 RN20
 Star Designation          : GDR3 0136718880731452032
 Star Coordinates (ICRF)   : RA = 02 55 37.0102, DE = +33 35 26.530  [2]
 Star Magnitudes           : G = 11.28 mag, RP = 10.82 mag, BP = 11.58 mag
 Object Magnitude          : V = 19.09 mag
 Estimated Magnitude Drop  : 7.8 mag
 Estimated Max. Duration   : 0.8 sec
 Speed of the shadow       : 6.1 km/s
 Object Mean Diameter      : 4.8 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2367 arcs/min @ PA = 314 deg
 Horizontal Parallax       : 4.1050 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 82° (sunlit = 92%), Sun = 130°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.42 path-width (1-sig)
 RUWE and duplicate source : 0.88 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#42
 Note                      : FP:true

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


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