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Stellar Occultation by (21627) Sillis on 2023-05-21 (01:12:27 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] : 9a56a720-ddb3-11f0-547e-75e6fd7b2bb7 [observed]

 Occultation Date + Time   : 2023-05-21 at 01:12:27 UT +/- 0.0 min  [1]
 Object Designation        : (21627) Sillis
 Star Designation          : GDR3 1162104733097247872
 Star Coordinates (ICRF)   : RA = 15 26 42.6476, DE = +05 42 01.898  [2]
 Star Magnitudes           : G = 12.56 mag, RP = 12.04 mag, BP = 12.91 mag
 Object Magnitude          : V = 16.95 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 0.7 sec
 Speed of the shadow       : 6.3 km/s
 Object Mean Diameter      : 4.4 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.4783 arcs/min @ PA = 275 deg
 Horizontal Parallax       : 8.0940 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 141° (sunlit = 2%), Sun = 154°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#44
 Note                      : FP:true

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


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