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Stellar Occultation by (335) Roberta on 2025-09-16 (05:27:03 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] : 6f1dc120-ddb7-11f0-547e-eda67adff99e [observed]

 Occultation Date + Time   : 2025-09-16 at 05:27:03 UT +/- 0.0 min  [1]
 Object Designation        : (335) Roberta
 Star Designation          : GDR3 3397523644596774528
 Star Coordinates (ICRF)   : RA = 05 37 44.8843, DE = +17 55 09.333  [2]
 Star Magnitudes           : G = 14.55 mag, RP = 13.74 mag, BP = 15.25 mag
 Object Magnitude          : V = 14.38 mag
 Estimated Magnitude Drop  : 0.7 mag
 Estimated Max. Duration   : 5.8 sec
 Speed of the shadow       : 15.3 km/s
 Object Mean Diameter      : 89.1 km  (src: astorb) => apparent = 48 mas
 Apparent Motion           : 0.4917 arcs/min @ PA = 96 deg
 Horizontal Parallax       : 3.4270 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 24° (sunlit = 31%), Sun = 89°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#95
 Note                      : FP:true

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


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