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Stellar Occultation by (2688) Halley on 2024-12-20 (22:22:02 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] : 311ccd20-885a-11ef-78cd-7485de33d45f [asteroids]

 Occultation Date + Time   : 2024-12-20 at 22:22:02 UT +/- 0.0 min  [1]
 Object Designation        : (2688) Halley
 Star Designation          : GDR3 3425309673522243456
 Star Coordinates (ICRF)   : RA = 06 09 20.4780, DE = +23 07 18.995  [2]
 Star Magnitudes           : G = 12.96 mag, RP = 12.57 mag, BP = 13.2 mag
 Object Magnitude          : V = 16.93 mag
 Estimated Magnitude Drop  : 4.0 mag
 Estimated Max. Duration   : 1.4 sec
 Object Mean Diameter      : 21.5 km  (src: astorb)
 Orbital Class             : MBA
 Speed of the shadow       : 15.8 km/s
 Elongation to Moon & Sun  : 65° (sunlit = 69%), Sun = 177°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.29 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#61

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


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