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Stellar Occultation by (1974) Caupolican on 2025-10-19 (23:16:07 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] : a17fe5c0-ddb8-11f0-547e-56d8f7de791b [observed]

 Occultation Date + Time   : 2025-10-19 at 23:16:07 UT +/- 0.01 min  [1]
 Object Designation        : (1974) Caupolican
 Star Designation          : GDR3 2540269475350792704
 Star Coordinates (ICRF)   : RA = 00 23 59.7785, DE = -03 28 28.072  [2]
 Star Magnitudes           : G = 10.53 mag, RP = 18.18 mag, BP = 19.05 mag
 Object Magnitude          : V = 18.02 mag
 Estimated Magnitude Drop  : 7.5 mag
 Estimated Max. Duration   : 2.3 sec
 Speed of the shadow       : 11.6 km/s
 Object Mean Diameter      : 26.6 km  (src: astorb) => apparent = 16 mas
 Apparent Motion           : 0.4133 arcs/min @ PA = 238 deg
 Horizontal Parallax       : 3.7930 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 171° (sunlit = 2%), Sun = 157°
 Cross-track uncertainty   : 0.8 mas = 1 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 2.09 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#63
 Note                      : FP:true

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


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