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Stellar Occultation by (56837) 2000 QX39 on 2026-09-28 (19:18:26 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] : 2090c280-d9b2-11f1-43f3-8625d9681c6e [observed]

 Occultation Date + Time   : 2026-09-28 at 19:18:26 UT +/- 0.03 min  [1]
 Object Designation        : (56837) 2000 QX39
 Star Designation          : GDR3 6863733776284824960
 Star Coordinates (ICRF)   : RA = 19 55 18.4625, DE = -23 13 37.115  [2]
 Star Magnitudes           : G = 13.02 mag, RP = 12.2 mag, BP = 13.74 mag
 Object Magnitude          : V = 19.26 mag
 Estimated Magnitude Drop  : 6.2 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 9.4 km/s
 Object Mean Diameter      : 4.3 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3700 arcs/min @ PA = 52 deg
 Horizontal Parallax       : 4.1670 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 97° (sunlit = 95%), Sun = 111°
 Cross-track uncertainty   : 3.3 mas = 5 km = 1.17 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL43
 Note                      : FP:true

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


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