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Stellar Occultation by (34521) 2000 SA191 on 2025-10-18 (21:04:12 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] : 96c502a0-ddb8-11f0-547e-5593efffdc33 [observed]

 Occultation Date + Time   : 2025-10-18 at 21:04:12 UT +/- 0.04 min  [1]
 Object Designation        : (34521) 2000 SA191
 Star Designation          : GDR3 0221890968429654400
 Star Coordinates (ICRF)   : RA = 03 26 21.7097, DE = +34 51 46.662  [2]
 Star Magnitudes           : G = 12.79 mag, RP = 12.11 mag, BP = 13.31 mag
 Object Magnitude          : V = 18.77 mag
 Estimated Magnitude Drop  : 6.0 mag
 Estimated Max. Duration   : 1.2 sec
 Speed of the shadow       : 14.2 km/s
 Object Mean Diameter      : 16.3 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.2783 arcs/min @ PA = 283 deg
 Horizontal Parallax       : 2.0810 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 117° (sunlit = 6%), Sun = 145°
 Cross-track uncertainty   : 4.7 mas = 14 km = 0.88 path-width (1-sig)
 RUWE and duplicate source : 1.09 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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