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Stellar Occultation by (81578) 2000 HD42 on 2023-09-12 (02:34:57 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] : 07c3ce50-ddb4-11f0-547e-83427fcf55b4 [observed]

 Occultation Date + Time   : 2023-09-12 at 02:34:57 UT +/- 0.01 min  [1]
 Object Designation        : (81578) 2000 HD42
 Star Designation          : GDR3 2713931663306156672
 Star Coordinates (ICRF)   : RA = 23 01 58.1570, DE = +08 58 44.964  [2]
 Star Magnitudes           : G = 12.82 mag, RP = 12.32 mag, BP = 13.14 mag
 Object Magnitude          : V = 17.91 mag
 Estimated Magnitude Drop  : 5.1 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 9.5 km/s
 Object Mean Diameter      : 3.4 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.5983 arcs/min @ PA = 227 deg
 Horizontal Parallax       : 6.7260 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 142° (sunlit = 8%), Sun = 166°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.20 path-width (1-sig)
 RUWE and duplicate source : 1.15 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#45
 Note                      : FP:true

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


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