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Stellar Occultation by (82) Alkmene on 2024-09-20 (21:32:40 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] : f498b620-c355-11ef-5276-9bead7754a9c [observed]

 Occultation Date + Time   : 2024-09-20 at 21:32:40 UT +/- 0.01 min  [1]
 Object Designation        : (82) Alkmene
 Star Designation          : GDR3 2447422487253806208
 Star Coordinates (ICRF)   : RA = 23 51 11.7079, DE = -03 05 42.242  [2]
 Star Magnitudes           : G = 13.19 mag, RP = 12.65 mag, BP = 13.56 mag
 Object Magnitude          : V = 12.52 mag
 Estimated Magnitude Drop  : 0.5 mag
 Estimated Max. Duration   : 4.2 sec
 Object Mean Diameter      : 61.0 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 14.4 km/s
 Elongation to Moon & Sun  : 41° (sunlit = 89%), Sun = 177°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#142

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


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