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Stellar Occultation by (55730) 1981 EM33 on 2023-09-27 (01:32:47 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] : 126adb50-ddb4-11f0-547e-a771dc6bdd00 [observed]

 Occultation Date + Time   : 2023-09-27 at 01:32:47 UT +/- 0.0 min  [1]
 Object Designation        : (55730) 1981 EM33
 Star Designation          : GDR3 2661692250962004224
 Star Coordinates (ICRF)   : RA = 23 05 19.2478, DE = +03 06 39.793  [2]
 Star Magnitudes           : G = 11.94 mag, RP = 11.32 mag, BP = 12.4 mag
 Object Magnitude          : V = 17.63 mag
 Estimated Magnitude Drop  : 5.7 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 9.0 km/s
 Object Mean Diameter      : 4.1 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.5500 arcs/min @ PA = 268 deg
 Horizontal Parallax       : 6.5280 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 22° (sunlit = 92%), Sun = 163°
 Cross-track uncertainty   : 1.0 mas = 0 km = 0.24 path-width (1-sig)
 RUWE and duplicate source : 1.43 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#52
 Note                      : FP:true

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


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