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Stellar Occultation by (255) Oppavia on 2025-12-09 (20:33:54 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] : d31e3aa0-ddb8-11f0-547e-dbaec7f7f066 [observed]

 Occultation Date + Time   : 2025-12-09 at 20:33:54 UT +/- 0.01 min  [1]
 Object Designation        : (255) Oppavia
 Star Designation          : GDR3 0189512511358644992
 Star Coordinates (ICRF)   : RA = 05 34 14.8781, DE = +37 04 03.204  [2]
 Star Magnitudes           : G = 12.27 mag, RP = 11.06 mag, BP = 13.91 mag
 Object Magnitude          : V = 14.36 mag
 Estimated Magnitude Drop  : 2.2 mag
 Estimated Max. Duration   : 4.8 sec
 Speed of the shadow       : 12.0 km/s
 Object Mean Diameter      : 57.4 km  (src: astorb) => apparent = 45 mas
 Apparent Motion           : 0.5683 arcs/min @ PA = 276 deg
 Horizontal Parallax       : 5.0270 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 60° (sunlit = 71%), Sun = 165°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.92 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#78
 Note                      : FP:true

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


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