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Stellar Occultation by (70021) 1999 AB on 2026-09-14 (21:05:38 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] : a3dbab70-d9b0-11f1-43f3-b110ad8e86ed [observed]

 Occultation Date + Time   : 2026-09-14 at 21:05:38 UT +/- 0.03 min  [1]
 Object Designation        : (70021) 1999 AB
 Star Designation          : GDR3 0347910325415724800
 Star Coordinates (ICRF)   : RA = 01 35 49.3802, DE = +40 30 40.686  [2]
 Star Magnitudes           : G = 14.7 mag, RP = 13.74 mag, BP = 15.66 mag
 Object Magnitude          : V = 19.09 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 8.8 km/s
 Object Mean Diameter      : 5.6 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3083 arcs/min @ PA = 309 deg
 Horizontal Parallax       : 3.7080 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 157° (sunlit = 15%), Sun = 128°
 Cross-track uncertainty   : 2.0 mas = 3 km = 0.61 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL46
 Note                      : FP:true

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


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