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Stellar Occultation by (259) Aletheia on 2024-12-27 (04:13:34 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] : 938610d0-8566-11ef-78cd-9262fe6e9a61 [asteroids]

 Occultation Date + Time   : 2024-12-27 at 04:13:34 UT +/- 0.0 min  [1]
 Object Designation        : (259) Aletheia
 Star Designation          : GDR3 6315734157340521344
 Star Coordinates (ICRF)   : RA = 15 16 57.0037, DE = -10 53 16.895  [2]
 Star Magnitudes           : G = 14.89 mag, RP = 14.28 mag, BP = 15.31 mag
 Object Magnitude          : V = 13.55 mag
 Estimated Magnitude Drop  : 0.3 mag
 Estimated Max. Duration   : 4.5 sec
 Object Mean Diameter      : 179 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 39.3 km/s
 Elongation to Moon & Sun  : 11° (sunlit = 14%), Sun = 47°
 Cross-track uncertainty   : 1.8 mas = 4 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 2.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#139

 Object is a <Gaia mass determination> target !

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


More Data and Informations
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