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Stellar Occultation by (243427) 2009 CS56 on 2025-04-09 (19:04:54 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] : 6c4bd1e0-ddb6-11f0-547e-b9d73e8f2054 [observed]

 Occultation Date + Time   : 2025-04-09 at 19:04:54 UT +/- 0.04 min  [1]
 Object Designation        : (243427) 2009 CS56
 Star Designation          : GDR3 0602675072311367296
 Star Coordinates (ICRF)   : RA = 08 30 23.5731, DE = +11 49 54.525  [2]
 Star Magnitudes           : G = 14.03 mag, RP = 13.5 mag, BP = 14.41 mag
 Object Magnitude          : V = 21.13 mag
 Estimated Magnitude Drop  : 7.1 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 10.5 km/s
 Object Mean Diameter      : 2.9 km  (src: astorb) => apparent = 1 mas
 Apparent Motion           : 0.3017 arcs/min @ PA = 41 deg
 Horizontal Parallax       : 3.0590 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 39° (sunlit = 91%), Sun = 107°
 Cross-track uncertainty   : 1.7 mas = 3 km = 1.22 path-width (1-sig)
 RUWE and duplicate source : 0.94 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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