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Stellar Occultation by (206) Hersilia on 2024-09-21 (19:13:10 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] : 074886d0-8556-11ef-78cd-fbad7cf94c56 [asteroids]

 Occultation Date + Time   : 2024-09-21 at 19:13:10 UT +/- 0.01 min  [1]
 Object Designation        : (206) Hersilia
 Star Designation          : GDR3 2440854623264344448
 Star Coordinates (ICRF)   : RA = 23 39 32.9926, DE = -05 28 56.317  [2]
 Star Magnitudes           : G = 13.97 mag, RP = 13.51 mag, BP = 14.26 mag
 Object Magnitude          : V = 12.61 mag
 Estimated Magnitude Drop  : 0.3 mag
 Estimated Max. Duration   : 4.8 sec
 Object Mean Diameter      : 55.4 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 11.6 km/s
 Elongation to Moon & Sun  : 58° (sunlit = 81%), Sun = 173°
 Cross-track uncertainty   : 1.3 mas = 1 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#128

 Object is a <Gaia mass determination> target !

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


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