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Stellar Occultation by (420) Bertholda on 2024-12-23 (21:15:16 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] : db22b7b0-ddb5-11f0-547e-f790b7ff974f [observed]

 Occultation Date + Time   : 2024-12-23 at 21:15:16 UT +/- 0.01 min  [1]
 Object Designation        : (420) Bertholda
 Star Designation          : GDR3 3371072654710241920
 Star Coordinates (ICRF)   : RA = 06 32 58.3389, DE = +17 54 43.620  [2]
 Star Magnitudes           : G = 13.3 mag, RP = 12.73 mag, BP = 13.7 mag
 Object Magnitude          : V = 13.09 mag
 Estimated Magnitude Drop  : 0.7 mag
 Estimated Max. Duration   : 10.2 sec
 Speed of the shadow       : 13.9 km/s
 Object Mean Diameter      : 141.2 km  (src: astorb) => apparent = 82 mas
 Apparent Motion           : 0.4850 arcs/min @ PA = 266 deg
 Horizontal Parallax       : 3.7080 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 95° (sunlit = 41%), Sun = 172°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#144
 Note                      : FP:true

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


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