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Stellar Occultation by (6557) Yokonomura on 2025-01-09 (23:28:41 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] : b94fcf30-8a8a-11ef-78cd-3b41c277d0b1 [asteroids]

 Occultation Date + Time   : 2025-01-09 at 23:28:41 UT +/- 0.01 min  [1]
 Object Designation        : (6557) Yokonomura
 Star Designation          : GDR3 3448433644304047488
 Star Coordinates (ICRF)   : RA = 05 39 21.6542, DE = +32 44 45.202  [2]
 Star Magnitudes           : G = 14.69 mag, RP = 14.13 mag, BP = 15.07 mag
 Object Magnitude          : V = 16.5 mag
 Estimated Magnitude Drop  : 2.0 mag
 Estimated Max. Duration   : 1.3 sec
 Object Mean Diameter      : 11 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 8.1 km/s
 Elongation to Moon & Sun  : 27° (sunlit = 82%), Sun = 154°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.07 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#51

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


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