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Stellar Occultation by (40709) 1999 RW242 on 2024-08-10 (23:01:56 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] : 372758f0-ddb5-11f0-547e-2141ff5642a1 [observed]

 Occultation Date + Time   : 2024-08-10 at 23:01:56 UT +/- 0.02 min  [1]
 Object Designation        : (40709) 1999 RW242
 Star Designation          : GDR3 4161934566664642176
 Star Coordinates (ICRF)   : RA = 17 45 00.1446, DE = -12 41 50.249  [2]
 Star Magnitudes           : G = 12.18 mag, RP = 11.29 mag, BP = 13.0 mag
 Object Magnitude          : V = 19.11 mag
 Estimated Magnitude Drop  : 6.9 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 7.4 km/s
 Object Mean Diameter      : 5.2 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2717 arcs/min @ PA = 204 deg
 Horizontal Parallax       : 3.8860 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 57° (sunlit = 34%), Sun = 127°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.13 path-width (1-sig)
 RUWE and duplicate source : 3.41 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#55
 Note                      : FP:true

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


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