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Stellar Occultation by (169255) 2001 SP129 on 2023-09-05 (21:18:00 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] : fecae680-ddb3-11f0-547e-e7e6fad91412 [observed]

 Occultation Date + Time   : 2023-09-05 at 21:18:00 UT +/- 0.11 min  [1]
 Object Designation        : (169255) 2001 SP129
 Star Designation          : GDR3 6912149121542406400
 Star Coordinates (ICRF)   : RA = 21 08 36.4924, DE = -04 39 42.971  [2]
 Star Magnitudes           : G = 12.41 mag, RP = 11.73 mag, BP = 12.93 mag
 Object Magnitude          : V = 18.9 mag
 Estimated Magnitude Drop  : 6.5 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 7.6 km/s
 Object Mean Diameter      : 3.1 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3983 arcs/min @ PA = 220 deg
 Horizontal Parallax       : 5.5590 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 102° (sunlit = 61%), Sun = 153°
 Cross-track uncertainty   : 20.7 mas = 23 km = 7.66 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#33
 Note                      : FP:true

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


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