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Stellar Occultation by (230647) 2003 SN11 on 2025-08-12 (21:44:46 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] : 3b2f88d0-ddb7-11f0-547e-1f4dffffb09d [observed]

 Occultation Date + Time   : 2025-08-12 at 21:44:46 UT +/- 0.06 min  [1]
 Object Designation        : (230647) 2003 SN11
 Star Designation          : GDR3 6893174059107936512
 Star Coordinates (ICRF)   : RA = 21 30 43.9397, DE = -10 25 46.447  [2]
 Star Magnitudes           : G = 13.74 mag, RP = 13.19 mag, BP = 14.11 mag
 Object Magnitude          : V = 18.68 mag
 Estimated Magnitude Drop  : 5.0 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 7.6 km/s
 Object Mean Diameter      : 2.2 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4767 arcs/min @ PA = 249 deg
 Horizontal Parallax       : 6.6850 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 45° (sunlit = 85%), Sun = 176°
 Cross-track uncertainty   : 23.3 mas = 22 km = 10.10 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#25
 Note                      : FP:true

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


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