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Stellar Occultation by (4946) Askalaphus on 2025-04-24 (19:53:46 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] : 863545f0-ddb6-11f0-547e-4c39ffdf17fa [observed]

 Occultation Date + Time   : 2025-04-24 at 19:53:46 UT +/- 0.04 min  [1]
 Object Designation        : (4946) Askalaphus
 Star Designation          : GDR3 0909612225763763328
 Star Coordinates (ICRF)   : RA = 08 14 19.1223, DE = +40 43 34.861  [2]
 Star Magnitudes           : G = 12.13 mag, RP = 11.39 mag, BP = 12.75 mag
 Object Magnitude          : V = 18.24 mag
 Estimated Magnitude Drop  : 6.1 mag
 Estimated Max. Duration   : 1.8 sec
 Speed of the shadow       : 17.4 km/s
 Object Mean Diameter      : 31.9 km  (src: astorb) => apparent = 8 mas
 Apparent Motion           : 0.2600 arcs/min @ PA = 130 deg
 Horizontal Parallax       : 1.5890 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 121° (sunlit = 13%), Sun = 82°
 Cross-track uncertainty   : 0.3 mas = 1 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#67
 Note                      : FP:true

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


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