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Stellar Occultation by (171865) 2001 QQ72 on 2024-09-27 (23:24:30 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] : 827d8a90-ddb5-11f0-547e-b2a7ffc76984 [observed]

 Occultation Date + Time   : 2024-09-27 at 23:24:30 UT +/- 0.02 min  [1]
 Object Designation        : (171865) 2001 QQ72
 Star Designation          : GDR3 3442890971827267456
 Star Coordinates (ICRF)   : RA = 05 37 39.5211, DE = +29 07 48.956  [2]
 Star Magnitudes           : G = 11.31 mag, RP = 10.0 mag, BP = 13.36 mag
 Object Magnitude          : V = 19.86 mag
 Estimated Magnitude Drop  : 8.5 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 11.0 km/s
 Object Mean Diameter      : 3.4 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4100 arcs/min @ PA = 100 deg
 Horizontal Parallax       : 3.9720 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 47° (sunlit = 20%), Sun = 100°
 Cross-track uncertainty   : 2.7 mas = 4 km = 1.28 path-width (1-sig)
 RUWE and duplicate source : 1.36 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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