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Stellar Occultation by (239837) 1999 FX90 on 2025-04-17 (22:22:43 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] : 7853ce70-ddb6-11f0-547e-708dbaff7b19 [observed]

 Occultation Date + Time   : 2025-04-17 at 22:22:43 UT +/- 0.11 min  [1]
 Object Designation        : (239837) 1999 FX90
 Star Designation          : GDR3 3910006151739810688
 Star Coordinates (ICRF)   : RA = 11 41 43.3676, DE = +07 00 25.811  [2]
 Star Magnitudes           : G = 13.93 mag, RP = 13.25 mag, BP = 14.38 mag
 Object Magnitude          : V = 21.17 mag
 Estimated Magnitude Drop  : 7.2 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 7.7 km/s
 Object Mean Diameter      : 1.70 km  (src: astorb) => apparent = 1 mas
 Apparent Motion           : 0.3017 arcs/min @ PA = 283 deg
 Horizontal Parallax       : 4.1780 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 89° (sunlit = 80%), Sun = 145°
 Cross-track uncertainty   : 23.0 mas = 35 km = 20.65 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#23
 Note                      : FP:true

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


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