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Stellar Occultation by (40140) 1998 QQ68 on 2025-09-09 (19:32:37 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] : 675b5d80-ddb7-11f0-547e-2a128b9b984c [observed]

 Occultation Date + Time   : 2025-09-09 at 19:32:37 UT +/- 0.03 min  [1]
 Object Designation        : (40140) 1998 QQ68
 Star Designation          : GDR3 4258593256642370944
 Star Coordinates (ICRF)   : RA = 18 44 16.9957, DE = -03 25 36.067  [2]
 Star Magnitudes           : G = 13.11 mag, RP = 11.69 mag, BP = 15.74 mag
 Object Magnitude          : V = 19.24 mag
 Estimated Magnitude Drop  : 6.1 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 10.0 km/s
 Object Mean Diameter      : 5.4 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3433 arcs/min @ PA = 155 deg
 Horizontal Parallax       : 3.6380 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 92° (sunlit = 94%), Sun = 113°
 Cross-track uncertainty   : 0.6 mas = 1 km = 0.19 path-width (1-sig)
 RUWE and duplicate source : 1.07 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#42
 Note                      : FP:true

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


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