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Stellar Occultation by (259) Aletheia on 2025-02-06 (05:20:33 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] : 9fafc630-8566-11ef-78cd-f58ff79e0148 [asteroids]

 Occultation Date + Time   : 2025-02-06 at 05:20:33 UT +/- 0.01 min  [1]
 Object Designation        : (259) Aletheia
 Star Designation          : GDR3 4329544398371548544
 Star Coordinates (ICRF)   : RA = 16 14 34.0336, DE = -14 03 34.856  [2]
 Star Magnitudes           : G = 13.69 mag, RP = 12.96 mag, BP = 14.29 mag
 Object Magnitude          : V = 13.36 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 6.6 sec
 Object Mean Diameter      : 178.6 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 26.9 km/s
 Elongation to Moon & Sun  : 167° (sunlit = 60%), Sun = 74°
 Cross-track uncertainty   : 1.7 mas = 3 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.02 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
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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