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Stellar Occultation by (40219) 1998 SX111 on 2026-07-27 (22:15:36 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] : 8dcc0870-d9ab-11f1-43f3-d7355d7facd5 [observed]

 Occultation Date + Time   : 2026-07-27 at 22:15:36 UT +/- 0.03 min  [1]
 Object Designation        : (40219) 1998 SX111
 Star Designation          : GDR3 6908564915498939648
 Star Coordinates (ICRF)   : RA = 21 01 16.2179, DE = -09 03 26.166  [2]
 Star Magnitudes           : G = 12.21 mag, RP = 11.68 mag, BP = 12.57 mag
 Object Magnitude          : V = 17.96 mag
 Estimated Magnitude Drop  : 5.8 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 10.0 km/s
 Object Mean Diameter      : 5.1 km  (src: astorb) => apparent = 4 mas
 Apparent Motion           : 0.4700 arcs/min @ PA = 244 deg
 Horizontal Parallax       : 5.0140 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 31° (sunlit = 97%), Sun = 167°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.50 path-width (1-sig)
 RUWE and duplicate source : 0.89 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL46
 Note                      : FP:true

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


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