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Stellar Occultation by (66011) 1998 QR17 on 2025-08-13 (23:07:09 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] : 4437d9f0-ddb7-11f0-547e-d712429dadf1 [observed]

 Occultation Date + Time   : 2025-08-13 at 23:07:09 UT +/- 0.01 min  [1]
 Object Designation        : (66011) 1998 QR17
 Star Designation          : GDR3 4076783163522178304
 Star Coordinates (ICRF)   : RA = 18 40 38.0749, DE = -24 08 15.055  [2]
 Star Magnitudes           : G = 12.41 mag, RP = 11.89 mag, BP = 12.75 mag
 Object Magnitude          : V = 17.92 mag
 Estimated Magnitude Drop  : 5.5 mag
 Estimated Max. Duration   : 1.5 sec
 Speed of the shadow       : 4.0 km/s
 Object Mean Diameter      : 6.2 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.1850 arcs/min @ PA = 289 deg
 Horizontal Parallax       : 4.8850 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 102° (sunlit = 75%), Sun = 138°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 0.82 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#52
 Note                      : FP:true

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


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