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Stellar Occultation by (257395) 2009 SW216 on 2023-12-24 (17:31:28 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] : 7083b26d-9bfc-42de-9edb-0f7868be0953 [observed]

 Occultation Date + Time   : 2023-12-24 at 17:31:28 UT +/- 0.15 min  [1]
 Object Designation        : (257395) 2009 SW216
 Star Designation          : GDR3 0196476891026257664
 Star Coordinates (ICRF)   : RA = 05 49 39.7999, DE = +43 42 17.707  [2]
 Star Magnitudes           : G = 7.98 mag, RP = 7.1 mag, BP = 8.79 mag
 Object Magnitude          : V = 19.39 mag
 Estimated Magnitude Drop  : 11.4 mag
 Estimated Max. Duration   : 0.6 sec
 Object Mean Diameter      : 8.8 km  (src: astorb)
 Orbital Class             : JTRO
 Speed of the shadow       : 15.3 km/s
 Elongation to Moon & Sun  : 28° (sunlit = 94%), Sun = 159°
 Cross-track uncertainty   : 29.0 mas = 75 km = 8.54 path-width (1-sig)
 RUWE and duplicate source : 0.94 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#27

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


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