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Stellar Occultation by (535027) 2014 WY509 on 2023-04-05 (19:52:30 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] : 8c5bdb40-ddb3-11f0-547e-c277dbf7ee24 [observed]

 Occultation Date + Time   : 2023-04-05 at 19:52:30 UT +/- 1.16 min  [1]
 Object Designation        : (535027) 2014 WY509
 Star Designation          : GDR3 3807103133374039296
 Star Coordinates (ICRF)   : RA = 10 36 04.8610, DE = +00 14 57.021  [2]
 Star Magnitudes           : G = 12.99 mag, RP = 12.51 mag, BP = 13.31 mag
 Object Magnitude          : V = 22.28 mag
 Estimated Magnitude Drop  : 9.3 mag
 Estimated Max. Duration   : 11.4 sec
 Speed of the shadow       : 20.3 km/s
 Object Mean Diameter      : 232.0 km  (src: astorb) => apparent = 8 mas
 Apparent Motion           : 0.0400 arcs/min @ PA = 297 deg
 Horizontal Parallax       : 0.2080 arcs
 Dynamical Class           : TNO
 Elongation to Moon & Sun  : 32° (sunlit = 100%), Sun = 144°
 Cross-track uncertainty   : 38.3 mas = 1174 km = 5.06 path-width (1-sig)
 RUWE and duplicate source : 1.17 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#13
 Note                      : FP:true

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


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