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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 : JPL#36 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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