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Stellar Occultation by (180113) 2003 FN31 on 2026-08-04 (19:44:13 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] : e9336d60-d9ac-11f1-43f3-838eef7f4e11 [observed]

 Occultation Date + Time   : 2026-08-04 at 19:44:13 UT +/- 0.12 min  [1]
 Object Designation        : (180113) 2003 FN31
 Star Designation          : GDR3 4156123961262233728
 Star Coordinates (ICRF)   : RA = 18 28 02.7593, DE = -09 25 38.746  [2]
 Star Magnitudes           : G = 13.27 mag, RP = 12.17 mag, BP = 14.53 mag
 Object Magnitude          : V = 20.39 mag
 Estimated Magnitude Drop  : 7.1 mag
 Estimated Max. Duration   : 0.3 sec
 Speed of the shadow       : 8.3 km/s
 Object Mean Diameter      : 2.7 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.3100 arcs/min @ PA = 237 deg
 Horizontal Parallax       : 3.9520 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 107° (sunlit = 64%), Sun = 142°
 Cross-track uncertainty   : 21.3 mas = 34 km = 12.73 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL30
 Note                      : FP:true

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


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