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Stellar Occultation by (46339) 2001 RU81 on 2023-09-15 (18:42:36 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] : 097a7f00-ddb4-11f0-547e-2628cf336a43 [observed]

 Occultation Date + Time   : 2023-09-15 at 18:42:36 UT +/- 0.0 min  [1]
 Object Designation        : (46339) 2001 RU81
 Star Designation          : GDR3 6839138697599790336
 Star Coordinates (ICRF)   : RA = 21 56 18.0544, DE = -15 39 14.192  [2]
 Star Magnitudes           : G = 11.64 mag, RP = 10.97 mag, BP = 12.17 mag
 Object Magnitude          : V = 18.02 mag
 Estimated Magnitude Drop  : 6.4 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 7.3 km/s
 Object Mean Diameter      : 4.5 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.3867 arcs/min @ PA = 264 deg
 Horizontal Parallax       : 5.6510 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 145° (sunlit = 0%), Sun = 153°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.18 path-width (1-sig)
 RUWE and duplicate source : 1.16 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL49
 Note                      : FP:true

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


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