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Stellar Occultation by (121041) 1999 CD15 on 2025-10-15 (21:55:21 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] : 91601700-ddb8-11f0-547e-12895ef5e62a [observed]

 Occultation Date + Time   : 2025-10-15 at 21:55:21 UT +/- 0.01 min  [1]
 Object Designation        : (121041) 1999 CD15
 Star Designation          : GDR3 2878679221436875392
 Star Coordinates (ICRF)   : RA = 23 51 32.8985, DE = +35 36 41.831  [2]
 Star Magnitudes           : G = 11.01 mag, RP = 10.55 mag, BP = 11.3 mag
 Object Magnitude          : V = 18.13 mag
 Estimated Magnitude Drop  : 7.1 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 9.5 km/s
 Object Mean Diameter      : 2.2 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.8333 arcs/min @ PA = 281 deg
 Horizontal Parallax       : 9.3240 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 117° (sunlit = 28%), Sun = 146°
 Cross-track uncertainty   : 9.4 mas = 6 km = 2.92 path-width (1-sig)
 RUWE and duplicate source : 18.33 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL36
 Note                      : FP:true

 Object is a <TNOs are Cool> target !

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


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