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Stellar Occultation by (77659) 2001 LY5 on 2025-11-18 (19:58:06 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] : c1262970-ddb8-11f0-547e-29a5f63f5467 [observed]

 Occultation Date + Time   : 2025-11-18 at 19:58:06 UT +/- 0.01 min  [1]
 Object Designation        : (77659) 2001 LY5
 Star Designation          : GDR3 3456892835794184704
 Star Coordinates (ICRF)   : RA = 05 55 51.8017, DE = +37 19 36.163  [2]
 Star Magnitudes           : G = 13.74 mag, RP = 13.21 mag, BP = 14.1 mag
 Object Magnitude          : V = 18.69 mag
 Estimated Magnitude Drop  : 5.0 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 10.3 km/s
 Object Mean Diameter      : 4.7 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.4450 arcs/min @ PA = 305 deg
 Horizontal Parallax       : 4.6060 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 132° (sunlit = 2%), Sun = 145°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.21 path-width (1-sig)
 RUWE and duplicate source : 1.1 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#52
 Note                      : FP:true

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


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