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Stellar Occultation by (2187) La Silla on 2023-07-08 (21:47:37 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] : c99c6600-ddb3-11f0-547e-3b20dff73feb [observed]

 Occultation Date + Time   : 2023-07-08 at 21:47:37 UT +/- 0.0 min  [1]
 Object Designation        : (2187) La Silla
 Star Designation          : GDR3 4157633758208313472
 Star Coordinates (ICRF)   : RA = 18 19 40.8446, DE = -09 28 15.798  [2]
 Star Magnitudes           : G = 14.1 mag, RP = 12.87 mag, BP = 15.79 mag
 Object Magnitude          : V = 16.88 mag
 Estimated Magnitude Drop  : 2.9 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 10.7 km/s
 Object Mean Diameter      : 6.4 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.6183 arcs/min @ PA = 244 deg
 Horizontal Parallax       : 6.1500 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 87° (sunlit = 63%), Sun = 162°
 Cross-track uncertainty   : 0.1 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL65
 Note                      : FP:true

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


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