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Stellar Occultation by (143645) 2003 OP4 on 2026-10-29 (18:43:17 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] : 27b9ec00-d9b5-11f1-43f3-cb7fd7cb1f86 [observed]

 Occultation Date + Time   : 2026-10-29 at 18:43:17 UT +/- 0.03 min  [1]
 Object Designation        : (143645) 2003 OP4
 Star Designation          : GDR3 1882609102141522944
 Star Coordinates (ICRF)   : RA = 22 50 53.7810, DE = +25 29 47.037  [2]
 Star Magnitudes           : G = 12.26 mag, RP = 11.55 mag, BP = 12.83 mag
 Object Magnitude          : V = 20.13 mag
 Estimated Magnitude Drop  : 7.9 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 11.1 km/s
 Object Mean Diameter      : 4.8 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.3133 arcs/min @ PA = 204 deg
 Horizontal Parallax       : 2.9970 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 88° (sunlit = 83%), Sun = 131°
 Cross-track uncertainty   : 2.7 mas = 5 km = 1.20 path-width (1-sig)
 RUWE and duplicate source : 0.91 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL43
 Note                      : FP:true

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


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