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Stellar Occultation by (325679) 2009 TH27 on 2023-12-18 (04:15:43 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] : 492d9060-ddb4-11f0-547e-eeb2fbf56b06 [observed]

 Occultation Date + Time   : 2023-12-18 at 04:15:43 UT +/- 0.23 min  [1]
 Object Designation        : (325679) 2009 TH27
 Star Designation          : GDR3 1009634081284150144
 Star Coordinates (ICRF)   : RA = 09 08 22.5802, DE = +45 17 48.572  [2]
 Star Magnitudes           : G = 13.47 mag, RP = 13.03 mag, BP = 13.75 mag
 Object Magnitude          : V = 20.55 mag
 Estimated Magnitude Drop  : 7.1 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 14.6 km/s
 Object Mean Diameter      : 7.3 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.2833 arcs/min @ PA = 335 deg
 Horizontal Parallax       : 2.0660 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 143° (sunlit = 32%), Sun = 133°
 Cross-track uncertainty   : 27.0 mas = 83 km = 11.42 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#30
 Note                      : FP:true

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


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