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Stellar Occultation by (420) Bertholda on 2022-12-04 (18:18:31 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] : 3c185f00-ddb3-11f0-547e-e49a7a7ccefe [observed]

 Occultation Date + Time   : 2022-12-04 at 18:18:31 UT +/- 0.0 min  [1]
 Object Designation        : (420) Bertholda
 Star Designation          : GDR3 6894949766091524480
 Star Coordinates (ICRF)   : RA = 21 33 02.2017, DE = -07 53 51.502  [2]
 Star Magnitudes           : G = 13.73 mag, RP = 12.93 mag, BP = 14.42 mag
 Object Magnitude          : V = 14.71 mag
 Estimated Magnitude Drop  : 1.4 mag
 Estimated Max. Duration   : 5.5 sec
 Speed of the shadow       : 25.5 km/s
 Object Mean Diameter      : 141.2 km  (src: astorb) => apparent = 53 mas
 Apparent Motion           : 0.5733 arcs/min @ PA = 78 deg
 Horizontal Parallax       : 2.3870 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 71° (sunlit = 89%), Sun = 71°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.0 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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