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Stellar Occultation by (269519) 2009 US146 on 2026-10-22 (18:45:07 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] : eec7acc0-d9b4-11f1-43f3-14d29afdafd5 [observed]

 Occultation Date + Time   : 2026-10-22 at 18:45:07 UT +/- 0.16 min  [1]
 Object Designation        : (269519) 2009 US146
 Star Designation          : GDR3 2437803547216585088
 Star Coordinates (ICRF)   : RA = 23 21 10.7048, DE = -09 39 02.715  [2]
 Star Magnitudes           : G = 10.7 mag, RP = 9.99 mag, BP = 11.25 mag
 Object Magnitude          : V = 21.05 mag
 Estimated Magnitude Drop  : 10.4 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 4.9 km/s
 Object Mean Diameter      : 1.60 km  (src: astorb) => apparent = 1 mas
 Apparent Motion           : 0.2117 arcs/min @ PA = 269 deg
 Horizontal Parallax       : 4.5860 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 7° (sunlit = 86%), Sun = 138°
 Cross-track uncertainty   : 23.3 mas = 32 km = 20.25 path-width (1-sig)
 RUWE and duplicate source : 1.56 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL28
 Note                      : FP:true

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


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