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Stellar Occultation by (518763) 2009 UN159 on 2024-09-03 (19:55:56 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] : 51fd9e00-ddb5-11f0-547e-2d16fb7da931 [observed]

 Occultation Date + Time   : 2024-09-03 at 19:55:56 UT +/- 0.31 min  [1]
 Object Designation        : (518763) 2009 UN159
 Star Designation          : GDR3 4299167606523886080
 Star Coordinates (ICRF)   : RA = 20 04 34.9798, DE = +09 01 52.852  [2]
 Star Magnitudes           : G = 12.72 mag, RP = 11.97 mag, BP = 13.33 mag
 Object Magnitude          : V = 21.0 mag
 Estimated Magnitude Drop  : 8.3 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 8.5 km/s
 Object Mean Diameter      : 1.80 km  (src: astorb) => apparent = 1 mas
 Apparent Motion           : 0.3517 arcs/min @ PA = 207 deg
 Horizontal Parallax       : 4.4030 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 128° (sunlit = 1%), Sun = 135°
 Cross-track uncertainty   : 43.7 mas = 63 km = 35.17 path-width (1-sig)
 RUWE and duplicate source : 1.11 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL23
 Note                      : FP:true

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


More Data and Informations
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