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Stellar Occultation by (23103) 1999 XK169 on 2023-08-03 (20:28:31 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] : df2a4820-ddb3-11f0-547e-299dff6f6ffb [observed]

 Occultation Date + Time   : 2023-08-03 at 20:28:31 UT +/- 0.0 min  [1]
 Object Designation        : (23103) 1999 XK169
 Star Designation          : GDR3 4066296025968811520
 Star Coordinates (ICRF)   : RA = 18 11 50.7212, DE = -23 48 13.457  [2]
 Star Magnitudes           : G = 13.69 mag, RP = 12.94 mag, BP = 14.29 mag
 Object Magnitude          : V = 18.05 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 1.0 sec
 Speed of the shadow       : 8.1 km/s
 Object Mean Diameter      : 8.2 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.2983 arcs/min @ PA = 292 deg
 Horizontal Parallax       : 3.9050 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 68° (sunlit = 94%), Sun = 141°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 0.91 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#60
 Note                      : FP:true

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


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