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Stellar Occultation by (51916) 2001 QQ73 on 2025-09-05 (20:10:03 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] : 67802390-ddb7-11f0-547e-0895dbf594ac [observed]

 Occultation Date + Time   : 2025-09-05 at 20:10:03 UT +/- 0.41 min  [1]
 Object Designation        : (51916) 2001 QQ73
 Star Designation          : GDR3 4081664411038758784
 Star Coordinates (ICRF)   : RA = 19 04 26.1443, DE = -21 34 47.424  [2]
 Star Magnitudes           : G = 12.47 mag, RP = 11.08 mag, BP = 14.67 mag
 Object Magnitude          : V = 20.39 mag
 Estimated Magnitude Drop  : 7.9 mag
 Estimated Max. Duration   : 2.1 sec
 Speed of the shadow       : 1.9 km/s
 Object Mean Diameter      : 4.0 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.0567 arcs/min @ PA = 303 deg
 Horizontal Parallax       : 3.1440 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 34° (sunlit = 95%), Sun = 121°
 Cross-track uncertainty   : 17.3 mas = 35 km = 8.77 path-width (1-sig)
 RUWE and duplicate source : 1.2 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#39
 Note                      : FP:true

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


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