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Stellar Occultation by (264071) 2009 SW159 on 2023-12-23 (20:42:27 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] : 4bd753a0-ddb4-11f0-547e-aae0c3f6d8b7 [observed]

 Occultation Date + Time   : 2023-12-23 at 20:42:27 UT +/- 0.09 min  [1]
 Object Designation        : (264071) 2009 SW159
 Star Designation          : GDR3 0936958316897112320
 Star Coordinates (ICRF)   : RA = 06 49 29.4015, DE = +31 38 50.099  [2]
 Star Magnitudes           : G = 11.89 mag, RP = 11.09 mag, BP = 12.57 mag
 Object Magnitude          : V = 20.7 mag
 Estimated Magnitude Drop  : 8.8 mag
 Estimated Max. Duration   : 0.4 sec
 Speed of the shadow       : 16.2 km/s
 Object Mean Diameter      : 5.6 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.3350 arcs/min @ PA = 277 deg
 Horizontal Parallax       : 2.1970 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 47° (sunlit = 89%), Sun = 168°
 Cross-track uncertainty   : 28.0 mas = 81 km = 14.52 path-width (1-sig)
 RUWE and duplicate source : 1.13 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL26
 Note                      : FP:true

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


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