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Stellar Occultation by (139702) 2001 QN226 on 2023-10-18 (19:31:55 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] : 2baf35c0-ddb4-11f0-547e-bbb5fff7e210 [observed]

 Occultation Date + Time   : 2023-10-18 at 19:31:55 UT +/- 0.02 min  [1]
 Object Designation        : (139702) 2001 QN226
 Star Designation          : GDR3 0232611069364399488
 Star Coordinates (ICRF)   : RA = 04 17 23.8012, DE = +44 28 53.283  [2]
 Star Magnitudes           : G = 13.04 mag, RP = 12.51 mag, BP = 13.41 mag
 Object Magnitude          : V = 19.57 mag
 Estimated Magnitude Drop  : 6.5 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 8.0 km/s
 Object Mean Diameter      : 3.7 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.3150 arcs/min @ PA = 319 deg
 Horizontal Parallax       : 4.2130 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 161° (sunlit = 17%), Sun = 130°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.41 path-width (1-sig)
 RUWE and duplicate source : 1.45 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#34
 Note                      : FP:true

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


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