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Stellar Occultation by (458) Hercynia on 2024-08-28 (21:16:05 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] : 4cabc530-ddb5-11f0-547e-7f4ee7e245c5 [observed]

 Occultation Date + Time   : 2024-08-28 at 21:16:05 UT +/- 0.01 min  [1]
 Object Designation        : (458) Hercynia
 Star Designation          : GDR3 6836638335142743168
 Star Coordinates (ICRF)   : RA = 21 47 44.8130, DE = -18 19 03.405  [2]
 Star Magnitudes           : G = 11.31 mag, RP = 10.66 mag, BP = 11.81 mag
 Object Magnitude          : V = 13.57 mag
 Estimated Magnitude Drop  : 2.4 mag
 Estimated Max. Duration   : 3.3 sec
 Speed of the shadow       : 11.8 km/s
 Object Mean Diameter      : 38.8 km  (src: astorb) => apparent = 31 mas
 Apparent Motion           : 0.5600 arcs/min @ PA = 233 deg
 Horizontal Parallax       : 5.0360 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 134° (sunlit = 24%), Sun = 166°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 0.84 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#120
 Note                      : FP:true

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


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