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Stellar Occultation by (140618) 2001 UC9 on 2025-04-13 (21:09:49 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] : 73bf0410-ddb6-11f0-547e-8ef8e7e78f2e [observed]

 Occultation Date + Time   : 2025-04-13 at 21:09:49 UT +/- 0.02 min  [1]
 Object Designation        : (140618) 2001 UC9
 Star Designation          : GDR3 3625366226513061120
 Star Coordinates (ICRF)   : RA = 13 18 55.2983, DE = -07 37 35.634  [2]
 Star Magnitudes           : G = 12.0 mag, RP = 11.47 mag, BP = 12.36 mag
 Object Magnitude          : V = 19.02 mag
 Estimated Magnitude Drop  : 7.0 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 12.7 km/s
 Object Mean Diameter      : 3.0 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.5733 arcs/min @ PA = 274 deg
 Horizontal Parallax       : 4.8000 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 13° (sunlit = 99%), Sun = 177°
 Cross-track uncertainty   : 9.3 mas = 12 km = 4.12 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#36
 Note                      : FP:true

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


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