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Stellar Occultation by (18915) 2000 OR38 on 2026-09-27 (17:24:11 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] : 11019b00-d9b2-11f1-43f3-6260f39fad29 [observed]

 Occultation Date + Time   : 2026-09-27 at 17:24:11 UT +/- 0.02 min  [1]
 Object Designation        : (18915) 2000 OR38
 Star Designation          : GDR3 4252001684516509184
 Star Coordinates (ICRF)   : RA = 18 51 30.8399, DE = -07 57 50.883  [2]
 Star Magnitudes           : G = 13.61 mag, RP = 12.41 mag, BP = 15.19 mag
 Object Magnitude          : V = 19.45 mag
 Estimated Magnitude Drop  : 5.8 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 11.0 km/s
 Object Mean Diameter      : 7.3 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2867 arcs/min @ PA = 113 deg
 Horizontal Parallax       : 2.7750 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 93° (sunlit = 99%), Sun = 98°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.31 path-width (1-sig)
 RUWE and duplicate source : 1.07 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL52
 Note                      : FP:true

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


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