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Stellar Occultation by (4619) Polyakhova on 2025-09-05 (21:29:20 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] : 64846fc0-ddb7-11f0-547e-0431eeb233bd [observed]

 Occultation Date + Time   : 2025-09-05 at 21:29:20 UT +/- 0.0 min  [1]
 Object Designation        : (4619) Polyakhova
 Star Designation          : GDR3 6891263451496154368
 Star Coordinates (ICRF)   : RA = 21 33 01.5401, DE = -11 55 12.867  [2]
 Star Magnitudes           : G = 13.95 mag, RP = 13.47 mag, BP = 14.27 mag
 Object Magnitude          : V = 17.17 mag
 Estimated Magnitude Drop  : 3.3 mag
 Estimated Max. Duration   : 0.8 sec
 Speed of the shadow       : 9.8 km/s
 Object Mean Diameter      : 8.0 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.4517 arcs/min @ PA = 251 deg
 Horizontal Parallax       : 4.9240 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 6° (sunlit = 96%), Sun = 158°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.11 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#67
 Note                      : FP:true

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


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