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Stellar Occultation by (4260) Yanai on 2025-08-20 (01:38:13 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] : 4feed050-ddb7-11f0-547e-b503f9f49a5a [observed]

 Occultation Date + Time   : 2025-08-20 at 01:38:13 UT +/- 0.0 min  [1]
 Object Designation        : (4260) Yanai
 Star Designation          : GDR3 6832650200310355328
 Star Coordinates (ICRF)   : RA = 21 16 30.1415, DE = -19 47 22.575  [2]
 Star Magnitudes           : G = 12.14 mag, RP = 11.68 mag, BP = 12.44 mag
 Object Magnitude          : V = 16.51 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 1.0 sec
 Speed of the shadow       : 11.4 km/s
 Object Mean Diameter      : 10.9 km  (src: astorb) => apparent = 8 mas
 Apparent Motion           : 0.5050 arcs/min @ PA = 251 deg
 Horizontal Parallax       : 4.7190 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 152° (sunlit = 12%), Sun = 168°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.09 path-width (1-sig)
 RUWE and duplicate source : 1.19 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#65
 Note                      : FP:true

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


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