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Stellar Occultation by (31659) 1999 HT10 on 2023-08-20 (19:59:20 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] : f56421b0-ddb3-11f0-547e-a7e7eb9e6715 [observed]

 Occultation Date + Time   : 2023-08-20 at 19:59:20 UT +/- 0.0 min  [1]
 Object Designation        : (31659) 1999 HT10
 Star Designation          : GDR3 6752613484749555072
 Star Coordinates (ICRF)   : RA = 19 41 37.3716, DE = -29 31 31.479  [2]
 Star Magnitudes           : G = 10.61 mag, RP = 9.86 mag, BP = 11.23 mag
 Object Magnitude          : V = 19.07 mag
 Estimated Magnitude Drop  : 8.5 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 8.6 km/s
 Object Mean Diameter      : 6.1 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2817 arcs/min @ PA = 275 deg
 Horizontal Parallax       : 3.4650 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 96° (sunlit = 17%), Sun = 144°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.09 path-width (1-sig)
 RUWE and duplicate source : 1.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL52
 Note                      : FP:true

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


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