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Stellar Occultation by (30698) Hippokoon on 2025-10-02 (21:27:06 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] : 80df3c80-ddb8-11f0-547e-75b1feda2096 [observed]

 Occultation Date + Time   : 2025-10-02 at 21:27:06 UT +/- 0.06 min  [1]
 Object Designation        : (30698) Hippokoon
 Star Designation          : GDR3 0075875686820780928
 Star Coordinates (ICRF)   : RA = 02 20 08.6681, DE = +14 41 02.691  [2]
 Star Magnitudes           : G = 11.52 mag, RP = 11.04 mag, BP = 11.84 mag
 Object Magnitude          : V = 19.23 mag
 Estimated Magnitude Drop  : 7.7 mag
 Estimated Max. Duration   : 0.9 sec
 Speed of the shadow       : 13.5 km/s
 Object Mean Diameter      : 12.6 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.2683 arcs/min @ PA = 244 deg
 Horizontal Parallax       : 2.1180 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 84° (sunlit = 78%), Sun = 152°
 Cross-track uncertainty   : 2.7 mas = 8 km = 0.65 path-width (1-sig)
 RUWE and duplicate source : 1.14 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#46
 Note                      : FP:true

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


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