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Stellar Occultation by (33507) 1999 GT23 on 2025-11-20 (18:29:59 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] : bc93d010-ddb8-11f0-547e-c4d6bffcfb09 [observed]

 Occultation Date + Time   : 2025-11-20 at 18:29:59 UT +/- 0.0 min  [1]
 Object Designation        : (33507) 1999 GT23
 Star Designation          : GDR3 2607304328474188416
 Star Coordinates (ICRF)   : RA = 23 00 45.4785, DE = -08 53 05.852  [2]
 Star Magnitudes           : G = 11.65 mag, RP = 11.18 mag, BP = 11.96 mag
 Object Magnitude          : V = 19.3 mag
 Estimated Magnitude Drop  : 7.6 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 10.8 km/s
 Object Mean Diameter      : 4.3 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.4167 arcs/min @ PA = 86 deg
 Horizontal Parallax       : 4.0990 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 99° (sunlit = 0%), Sun = 104°
 Cross-track uncertainty   : 0.8 mas = 1 km = 0.29 path-width (1-sig)
 RUWE and duplicate source : 3.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#54
 Note                      : FP:true

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


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