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Stellar Occultation by (250657) 2005 MQ3 on 2026-09-04 (18:34:28 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] : 543d6550-d9af-11f1-43f3-d04bfcf5bd0c [observed]

 Occultation Date + Time   : 2026-09-04 at 18:34:28 UT +/- 0.0 min  [1]
 Object Designation        : (250657) 2005 MQ3
 Star Designation          : GDR3 4500621673145360000
 Star Coordinates (ICRF)   : RA = 17 41 17.5395, DE = +14 48 27.410  [2]
 Star Magnitudes           : G = 9.57 mag, RP = 8.61 mag, BP = 10.52 mag
 Object Magnitude          : V = 19.52 mag
 Estimated Magnitude Drop  : 9.9 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 14.9 km/s
 Object Mean Diameter      : 3.0 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.6700 arcs/min @ PA = 139 deg
 Horizontal Parallax       : 4.7990 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 136° (sunlit = 45%), Sun = 99°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.44 path-width (1-sig)
 RUWE and duplicate source : 0.95 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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