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Stellar Occultation by (3495) Colchagua on 2023-12-03 (18:12:56 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] : 44a4d3f0-ddb4-11f0-547e-58ceefcfe9e5 [observed]

 Occultation Date + Time   : 2023-12-03 at 18:12:56 UT +/- 0.0 min  [1]
 Object Designation        : (3495) Colchagua
 Star Designation          : GDR3 0029096792818416128
 Star Coordinates (ICRF)   : RA = 02 55 36.9602, DE = +13 29 24.075  [2]
 Star Magnitudes           : G = 14.28 mag, RP = 13.51 mag, BP = 14.92 mag
 Object Magnitude          : V = 17.31 mag
 Estimated Magnitude Drop  : 3.1 mag
 Estimated Max. Duration   : 1.2 sec
 Speed of the shadow       : 12.6 km/s
 Object Mean Diameter      : 14.7 km  (src: astorb) => apparent = 7 mas
 Apparent Motion           : 0.3850 arcs/min @ PA = 257 deg
 Horizontal Parallax       : 3.2410 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 100° (sunlit = 64%), Sun = 154°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.06 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#68
 Note                      : FP:true

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


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