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Stellar Occultation by (49858) 1999 XZ99 on 2024-09-28 (03:53:14 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] : 7f53e8f0-ddb5-11f0-547e-9fbdea3ffbc3 [observed]

 Occultation Date + Time   : 2024-09-28 at 03:53:14 UT +/- 0.0 min  [1]
 Object Designation        : (49858) 1999 XZ99
 Star Designation          : GDR3 6762027572025889152
 Star Coordinates (ICRF)   : RA = 18 56 32.9356, DE = -28 20 45.141  [2]
 Star Magnitudes           : G = 11.56 mag, RP = 10.41 mag, BP = 12.92 mag
 Object Magnitude          : V = 20.17 mag
 Estimated Magnitude Drop  : 8.6 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 13.3 km/s
 Object Mean Diameter      : 3.5 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4467 arcs/min @ PA = 80 deg
 Horizontal Parallax       : 3.5710 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 148° (sunlit = 18%), Sun = 97°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.20 path-width (1-sig)
 RUWE and duplicate source : 0.88 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#50
 Note                      : FP:true

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


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