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Stellar Occultation by (11639) 1997 AO4 on 2026-09-02 (19:34:26 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] : 2adc9780-d9af-11f1-43f3-408cfeb1a7ba [observed]

 Occultation Date + Time   : 2026-09-02 at 19:34:26 UT +/- 0.01 min  [1]
 Object Designation        : (11639) 1997 AO4
 Star Designation          : GDR3 6856296645274598016
 Star Coordinates (ICRF)   : RA = 20 36 16.6975, DE = -21 02 14.610  [2]
 Star Magnitudes           : G = 10.49 mag, RP = 10.31 mag, BP = 10.58 mag
 Object Magnitude          : V = 17.21 mag
 Estimated Magnitude Drop  : 6.7 mag
 Estimated Max. Duration   : 1.3 sec
 Speed of the shadow       : 5.1 km/s
 Object Mean Diameter      : 6.7 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.2700 arcs/min @ PA = 239 deg
 Horizontal Parallax       : 5.6720 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 105° (sunlit = 67%), Sun = 146°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 1.19 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL68
 Note                      : FP:true

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


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