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Stellar Occultation by (138637) 2000 RN20 on 2023-10-23 (18:11:35 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] : 2e4486a0-ddb4-11f0-547e-f09a5fb568f0 [observed]

 Occultation Date + Time   : 2023-10-23 at 18:11:35 UT +/- 0.01 min  [1]
 Object Designation        : (138637) 2000 RN20
 Star Designation          : GDR3 0134777864752241920
 Star Coordinates (ICRF)   : RA = 02 38 29.6346, DE = +34 15 45.333  [2]
 Star Magnitudes           : G = 12.68 mag, RP = 12.22 mag, BP = 12.96 mag
 Object Magnitude          : V = 18.68 mag
 Estimated Magnitude Drop  : 6.0 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 11.0 km/s
 Object Mean Diameter      : 4.8 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.4583 arcs/min @ PA = 264 deg
 Horizontal Parallax       : 4.4410 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 88° (sunlit = 68%), Sun = 155°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.60 path-width (1-sig)
 RUWE and duplicate source : 1.32 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL42
 Note                      : FP:true

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


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