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Stellar Occultation by (264144) 2009 UJ91 on 2023-12-14 (20:24:00 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] : 4670ba50-ddb4-11f0-547e-4391ffe3f6cb [observed]

 Occultation Date + Time   : 2023-12-14 at 20:24:00 UT +/- 0.08 min  [1]
 Object Designation        : (264144) 2009 UJ91
 Star Designation          : GDR3 3357451939025441024
 Star Coordinates (ICRF)   : RA = 06 44 24.1573, DE = +14 42 09.037  [2]
 Star Magnitudes           : G = 11.61 mag, RP = 10.71 mag, BP = 12.45 mag
 Object Magnitude          : V = 20.35 mag
 Estimated Magnitude Drop  : 8.7 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 15.8 km/s
 Object Mean Diameter      : 7.9 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3000 arcs/min @ PA = 273 deg
 Horizontal Parallax       : 2.0220 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 165° (sunlit = 4%), Sun = 160°
 Cross-track uncertainty   : 21.7 mas = 68 km = 8.66 path-width (1-sig)
 RUWE and duplicate source : 1.12 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#31
 Note                      : FP:true

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


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