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Stellar Occultation by (51822) 2001 OB25 on 2025-12-28 (17:50:19 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] : 00d2a550-d997-11f1-43f3-4ff8fdbb131d [observed]

 Occultation Date + Time   : 2025-12-28 at 17:50:19 UT +/- 0.0 min  [1]
 Object Designation        : (51822) 2001 OB25
 Star Designation          : GDR3 3404909059902552960
 Star Coordinates (ICRF)   : RA = 04 57 51.2501, DE = +15 41 48.431  [2]
 Star Magnitudes           : G = 11.23 mag, RP = 10.7 mag, BP = 11.59 mag
 Object Magnitude          : V = 18.06 mag
 Estimated Magnitude Drop  : 6.8 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 11.1 km/s
 Object Mean Diameter      : 6.6 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.4483 arcs/min @ PA = 252 deg
 Horizontal Parallax       : 4.2790 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 56° (sunlit = 61%), Sun = 157°
 Cross-track uncertainty   : 0.5 mas = 0 km = 0.11 path-width (1-sig)
 RUWE and duplicate source : 1.88 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL61
 Note                      : FP:true

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


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