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Stellar Occultation by (213180) 2000 SD173 on 2025-09-09 (02:50:50 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] : 67715680-ddb7-11f0-547e-f688e6bd7fd9 [observed]

 Occultation Date + Time   : 2025-09-09 at 02:50:50 UT +/- 0.39 min  [1]
 Object Designation        : (213180) 2000 SD173
 Star Designation          : GDR3 0116099155059743744
 Star Coordinates (ICRF)   : RA = 02 53 36.1103, DE = +27 03 03.192  [2]
 Star Magnitudes           : G = 14.8 mag, RP = 14.23 mag, BP = 15.2 mag
 Object Magnitude          : V = 20.13 mag
 Estimated Magnitude Drop  : 5.3 mag
 Estimated Max. Duration   : 3.3 sec
 Speed of the shadow       : 3.3 km/s
 Object Mean Diameter      : 10.8 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.0567 arcs/min @ PA = 235 deg
 Horizontal Parallax       : 1.8460 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 45° (sunlit = 98%), Sun = 117°
 Cross-track uncertainty   : 14.3 mas = 49 km = 4.57 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL40
 Note                      : FP:true

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


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