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Stellar Occultation by (194839) 2002 AB4 on 2025-09-11 (21:05:04 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] : 6c2345d0-ddb7-11f0-547e-4bf1ff7dccce [observed]

 Occultation Date + Time   : 2025-09-11 at 21:05:04 UT +/- 0.07 min  [1]
 Object Designation        : (194839) 2002 AB4
 Star Designation          : GDR3 0345627361320076928
 Star Coordinates (ICRF)   : RA = 02 09 14.0539, DE = +42 56 25.010  [2]
 Star Magnitudes           : G = 12.49 mag, RP = 12.03 mag, BP = 12.78 mag
 Object Magnitude          : V = 19.45 mag
 Estimated Magnitude Drop  : 7.0 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 5.7 km/s
 Object Mean Diameter      : 3.6 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2383 arcs/min @ PA = 343 deg
 Horizontal Parallax       : 4.4320 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 24° (sunlit = 78%), Sun = 119°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.28 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL45
 Note                      : FP:true

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


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