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Stellar Occultation by (77659) 2001 LY5 on 2025-12-12 (19:23:34 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] : d6922bb0-ddb8-11f0-547e-fc2bdfff8029 [observed]

 Occultation Date + Time   : 2025-12-12 at 19:23:34 UT +/- 0.01 min  [1]
 Object Designation        : (77659) 2001 LY5
 Star Designation          : GDR3 0190725929817571072
 Star Coordinates (ICRF)   : RA = 05 31 58.4887, DE = +39 07 39.824  [2]
 Star Magnitudes           : G = 12.91 mag, RP = 12.42 mag, BP = 13.24 mag
 Object Magnitude          : V = 18.4 mag
 Estimated Magnitude Drop  : 5.5 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 12.8 km/s
 Object Mean Diameter      : 4.7 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.5667 arcs/min @ PA = 280 deg
 Horizontal Parallax       : 4.7150 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 98° (sunlit = 41%), Sun = 164°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.29 path-width (1-sig)
 RUWE and duplicate source : 0.91 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL52
 Note                      : FP:true

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


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