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Stellar Occultation by (51715) 2001 KB31 on 2026-07-28 (20:05:10 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] : a8e8cc60-d9ab-11f1-43f3-4acf5a0ddd7c [observed]

 Occultation Date + Time   : 2026-07-28 at 20:05:10 UT +/- 0.02 min  [1]
 Object Designation        : (51715) 2001 KB31
 Star Designation          : GDR3 4147937199526542464
 Star Coordinates (ICRF)   : RA = 17 49 39.3643, DE = -15 55 24.196  [2]
 Star Magnitudes           : G = 12.84 mag, RP = 11.79 mag, BP = 13.98 mag
 Object Magnitude          : V = 18.73 mag
 Estimated Magnitude Drop  : 5.9 mag
 Estimated Max. Duration   : 0.9 sec
 Speed of the shadow       : 2.8 km/s
 Object Mean Diameter      : 2.6 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.1783 arcs/min @ PA = 266 deg
 Horizontal Parallax       : 6.8560 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 31° (sunlit = 99%), Sun = 141°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.11 path-width (1-sig)
 RUWE and duplicate source : 0.84 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL40
 Note                      : FP:true

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


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