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Stellar Occultation by (4151) Alanhale on 2022-12-23 (21:15:50 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] : 3ea43a00-ddb3-11f0-547e-7bb8bbffc1b0 [observed]

 Occultation Date + Time   : 2022-12-23 at 21:15:50 UT +/- 0.01 min  [1]
 Object Designation        : (4151) Alanhale
 Star Designation          : GDR3 3380518284227040384
 Star Coordinates (ICRF)   : RA = 07 02 04.3081, DE = +23 30 56.469  [2]
 Star Magnitudes           : G = 14.98 mag, RP = 14.53 mag, BP = 15.26 mag
 Object Magnitude          : V = 16.37 mag
 Estimated Magnitude Drop  : 1.7 mag
 Estimated Max. Duration   : 1.0 sec
 Speed of the shadow       : 10.7 km/s
 Object Mean Diameter      : 11.0 km  (src: astorb) => apparent = 8 mas
 Apparent Motion           : 0.4900 arcs/min @ PA = 278 deg
 Horizontal Parallax       : 4.8810 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 173° (sunlit = 0%), Sun = 168°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#66
 Note                      : FP:true

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


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