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Stellar Occultation by (4681) Ermak on 2022-12-05 (20:31:00 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] : 362ba5c0-ddb3-11f0-547e-a551ff77f571 [observed]

 Occultation Date + Time   : 2022-12-05 at 20:31:00 UT +/- 0.0 min  [1]
 Object Designation        : (4681) Ermak
 Star Designation          : GDR3 0183106142439454976
 Star Coordinates (ICRF)   : RA = 05 34 37.8856, DE = +35 09 21.357  [2]
 Star Magnitudes           : G = 11.49 mag, RP = 11.06 mag, BP = 11.74 mag
 Object Magnitude          : V = 16.48 mag
 Estimated Magnitude Drop  : 5.0 mag
 Estimated Max. Duration   : 1.0 sec
 Speed of the shadow       : 13.0 km/s
 Object Mean Diameter      : 12.4 km  (src: astorb) => apparent = 9 mas
 Apparent Motion           : 0.5417 arcs/min @ PA = 282 deg
 Horizontal Parallax       : 4.4340 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 39° (sunlit = 95%), Sun = 164°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.88 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#62
 Note                      : FP:true

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


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