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Stellar Occultation by (396744) 2003 SF87 on 2025-08-21 (22:05:47 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] : 4e305770-ddb7-11f0-547e-1d4a936fad26 [observed]

 Occultation Date + Time   : 2025-08-21 at 22:05:47 UT +/- 0.87 min  [1]
 Object Designation        : (396744) 2003 SF87
 Star Designation          : GDR3 4203996353986368512
 Star Coordinates (ICRF)   : RA = 18 56 18.1427, DE = -08 01 27.235  [2]
 Star Magnitudes           : G = 11.59 mag, RP = 10.59 mag, BP = 12.65 mag
 Object Magnitude          : V = 19.81 mag
 Estimated Magnitude Drop  : 8.2 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 8.9 km/s
 Object Mean Diameter      : 2.4 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4283 arcs/min @ PA = 188 deg
 Horizontal Parallax       : 5.1160 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 147° (sunlit = 2%), Sun = 133°
 Cross-track uncertainty   : 22.3 mas = 27 km = 11.58 path-width (1-sig)
 RUWE and duplicate source : 0.83 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#26
 Note                      : FP:true

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


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