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Stellar Occultation by (1613) Smiley on 2023-12-18 (00:40:54 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] : 491d63c0-ddb4-11f0-547e-eb567e3c07b7 [observed]

 Occultation Date + Time   : 2023-12-18 at 00:40:54 UT +/- 0.01 min  [1]
 Object Designation        : (1613) Smiley
 Star Designation          : GDR3 0684376345397677824
 Star Coordinates (ICRF)   : RA = 08 12 09.8922, DE = +28 48 15.122  [2]
 Star Magnitudes           : G = 13.54 mag, RP = 13.12 mag, BP = 13.8 mag
 Object Magnitude          : V = 14.43 mag
 Estimated Magnitude Drop  : 1.3 mag
 Estimated Max. Duration   : 5.9 sec
 Speed of the shadow       : 3.6 km/s
 Object Mean Diameter      : 21.2 km  (src: astorb) => apparent = 25 mas
 Apparent Motion           : 0.2583 arcs/min @ PA = 265 deg
 Horizontal Parallax       : 7.6380 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 146° (sunlit = 30%), Sun = 146°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#63
 Note                      : FP:true

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


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