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Stellar Occultation by (4162) SAF on 2025-12-25 (17:43:40 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] : 83e2d9c0-d996-11f1-43f3-1575eff09fed [observed]

 Occultation Date + Time   : 2025-12-25 at 17:43:40 UT +/- 0.0 min  [1]
 Object Designation        : (4162) SAF
 Star Designation          : GDR3 2684528184053627904
 Star Coordinates (ICRF)   : RA = 21 18 04.5267, DE = -03 28 34.584  [2]
 Star Magnitudes           : G = 14.07 mag, RP = 13.53 mag, BP = 14.45 mag
 Object Magnitude          : V = 17.3 mag
 Estimated Magnitude Drop  : 3.3 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 37.9 km/s
 Object Mean Diameter      : 23.4 km  (src: astorb) => apparent = 10 mas
 Apparent Motion           : 0.9633 arcs/min @ PA = 77 deg
 Horizontal Parallax       : 2.7030 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 22° (sunlit = 29%), Sun = 48°
 Cross-track uncertainty   : 0.8 mas = 1 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 1.51 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL69
 Note                      : FP:true

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


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