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Stellar Occultation by (13291) 1998 QH77 on 2026-08-10 (21:42:27 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] : 503d99e0-d9ad-11f1-43f3-c9aed8bfdc80 [observed]

 Occultation Date + Time   : 2026-08-10 at 21:42:27 UT +/- 0.02 min  [1]
 Object Designation        : (13291) 1998 QH77
 Star Designation          : GDR3 4076174377682378880
 Star Coordinates (ICRF)   : RA = 18 31 08.0005, DE = -25 29 02.149  [2]
 Star Magnitudes           : G = 12.41 mag, RP = 11.01 mag, BP = 14.8 mag
 Object Magnitude          : V = 18.14 mag
 Estimated Magnitude Drop  : 5.7 mag
 Estimated Max. Duration   : 1.1 sec
 Speed of the shadow       : 8.0 km/s
 Object Mean Diameter      : 8.7 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.2767 arcs/min @ PA = 301 deg
 Horizontal Parallax       : 3.6610 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 164° (sunlit = 5%), Sun = 139°
 Cross-track uncertainty   : 1.4 mas = 2 km = 0.28 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL52
 Note                      : FP:true

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


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