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Stellar Occultation by (31799) 1999 LN23 on 2025-10-07 (19:00:46 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] : 8703f5b0-ddb8-11f0-547e-815ebe734fe8 [observed]

 Occultation Date + Time   : 2025-10-07 at 19:00:46 UT +/- 0.0 min  [1]
 Object Designation        : (31799) 1999 LN23
 Star Designation          : GDR3 2820513583155272704
 Star Coordinates (ICRF)   : RA = 23 32 21.8022, DE = +16 45 31.951  [2]
 Star Magnitudes           : G = 11.95 mag, RP = 11.43 mag, BP = 12.32 mag
 Object Magnitude          : V = 17.24 mag
 Estimated Magnitude Drop  : 5.3 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 12.0 km/s
 Object Mean Diameter      : 7.9 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.5517 arcs/min @ PA = 234 deg
 Horizontal Parallax       : 4.8710 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 27° (sunlit = 99%), Sun = 157°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL63
 Note                      : FP:true

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


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