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Stellar Occultation by (77522) 2001 HA54 on 2023-05-26 (22:41:52 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] : 9d9f4270-ddb3-11f0-547e-3e6bd71e5ede [observed]

 Occultation Date + Time   : 2023-05-26 at 22:41:52 UT +/- 0.01 min  [1]
 Object Designation        : (77522) 2001 HA54
 Star Designation          : GDR3 1748025713511430656
 Star Coordinates (ICRF)   : RA = 20 44 16.0244, DE = +06 40 42.958  [2]
 Star Magnitudes           : G = 12.29 mag, RP = 11.7 mag, BP = 12.72 mag
 Object Magnitude          : V = 19.96 mag
 Estimated Magnitude Drop  : 7.7 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 7.8 km/s
 Object Mean Diameter      : 4.1 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.2567 arcs/min @ PA = 29 deg
 Horizontal Parallax       : 3.4840 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 149° (sunlit = 43%), Sun = 108°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.13 path-width (1-sig)
 RUWE and duplicate source : 0.92 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#43
 Note                      : FP:true

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


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