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Stellar Occultation by (16976) 1999 AC2 on 2026-09-23 (01:54:49 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] : 485cdc00-d9b1-11f1-43f3-e3a0bfabf853 [observed]

 Occultation Date + Time   : 2026-09-23 at 01:54:49 UT +/- 0.0 min  [1]
 Object Designation        : (16976) 1999 AC2
 Star Designation          : GDR3 2548809553963285376
 Star Coordinates (ICRF)   : RA = 00 20 32.5360, DE = +03 30 17.890  [2]
 Star Magnitudes           : G = 13.34 mag, RP = 12.87 mag, BP = 13.65 mag
 Object Magnitude          : V = 17.25 mag
 Estimated Magnitude Drop  : 3.9 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 11.9 km/s
 Object Mean Diameter      : 5.3 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.6450 arcs/min @ PA = 244 deg
 Horizontal Parallax       : 5.7770 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 50° (sunlit = 86%), Sun = 174°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.15 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL71
 Note                      : FP:true

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


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