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Stellar Occultation by (187018) 2004 YC25 on 2024-12-25 (18:55:23 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] : cc9bff80-ddb5-11f0-547e-bb8eff67bfa0 [observed]

 Occultation Date + Time   : 2024-12-25 at 18:55:23 UT +/- 0.15 min  [1]
 Object Designation        : (187018) 2004 YC25
 Star Designation          : GDR3 2524926748362073600
 Star Coordinates (ICRF)   : RA = 00 59 46.3778, DE = -05 17 36.345  [2]
 Star Magnitudes           : G = 13.1 mag, RP = 12.5 mag, BP = 13.53 mag
 Object Magnitude          : V = 21.27 mag
 Estimated Magnitude Drop  : 8.2 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 10.4 km/s
 Object Mean Diameter      : 6.4 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.1800 arcs/min @ PA = 41 deg
 Horizontal Parallax       : 1.8260 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 153° (sunlit = 24%), Sun = 97°
 Cross-track uncertainty   : 14.3 mas = 49 km = 7.80 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#30
 Note                      : FP:true

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


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