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Stellar Occultation by (523642) 2010 SS43 on 2025-09-23 (05:07:15 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] : ee8920a0-409e-11f0-4ed7-c07ceff576a7 [cetnos]

 Occultation Date + Time   : 2025-09-23 at 05:07:15 UT +/- 1.36 min  [1]
 Object Designation        : (523642) 2010 SS43
 Star Designation          : GDR3 0348281066992727552
 Star Coordinates (ICRF)   : RA = 01 30 21.6086, DE = +41 57 51.664  [2]
 Star Magnitudes           : G = 16.54 mag, RP = 16.07 mag, BP = 16.86 mag
 Object Magnitude          : V = 21.63 mag
 Estimated Magnitude Drop  : 5.1 mag
 Estimated Max. Duration   : 11.4 sec
 Speed of the shadow       : 21.6 km/s
 Object Mean Diameter      : 247.4 km  (src: CORA+astorb) => apparent = 9 mas
 Apparent Motion           : 0.0483 arcs/min @ PA = 274 deg
 Horizontal Parallax       : 0.2360 arcs
 Dynamical Class           : TNO
 Elongation to Moon & Sun  : 146° (sunlit = 2%), Sun = 134°
 Cross-track uncertainty   : 61.7 mas = 1667 km = 6.74 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#13

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


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