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Stellar Occultation by (17758) 1998 DC18 on 2024-12-12 (18:59:27 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] : bc94c1d0-ddb5-11f0-547e-e91dd7fd6189 [observed]

 Occultation Date + Time   : 2024-12-12 at 18:59:27 UT +/- 0.01 min  [1]
 Object Designation        : (17758) 1998 DC18
 Star Designation          : GDR3 0874846668822617728
 Star Coordinates (ICRF)   : RA = 07 45 53.4805, DE = +26 15 10.209  [2]
 Star Magnitudes           : G = 9.43 mag, RP = 8.69 mag, BP = 10.02 mag
 Object Magnitude          : V = 19.07 mag
 Estimated Magnitude Drop  : 9.6 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 9.5 km/s
 Object Mean Diameter      : 4.5 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.3733 arcs/min @ PA = 291 deg
 Horizontal Parallax       : 4.1670 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 67° (sunlit = 91%), Sun = 147°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.10 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#54
 Note                      : FP:true

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


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