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Stellar Occultation by (120166) 2003 HC47 on 2026-08-05 (21:17:54 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] : 1364d1a0-d9ad-11f1-43f3-8171ff3f08c1 [observed]

 Occultation Date + Time   : 2026-08-05 at 21:17:54 UT +/- 0.03 min  [1]
 Object Designation        : (120166) 2003 HC47
 Star Designation          : GDR3 4308764384547390976
 Star Coordinates (ICRF)   : RA = 19 23 39.5058, DE = +10 14 58.494  [2]
 Star Magnitudes           : G = 14.5 mag, RP = 13.11 mag, BP = 16.89 mag
 Object Magnitude          : V = 18.93 mag
 Estimated Magnitude Drop  : 4.5 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 10.8 km/s
 Object Mean Diameter      : 4.9 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.4233 arcs/min @ PA = 243 deg
 Horizontal Parallax       : 4.1760 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 101° (sunlit = 52%), Sun = 143°
 Cross-track uncertainty   : 3.3 mas = 5 km = 1.03 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL39
 Note                      : FP:true

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


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