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Stellar Occultation by (13913) 1979 SO on 2025-09-19 (20:02:40 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] : 7421c810-ddb7-11f0-547e-a8e5febf1f80 [observed]

 Occultation Date + Time   : 2025-09-19 at 20:02:40 UT +/- 0.13 min  [1]
 Object Designation        : (13913) 1979 SO
 Star Designation          : GDR3 6799412552217389568
 Star Coordinates (ICRF)   : RA = 20 30 09.5742, DE = -27 45 03.954  [2]
 Star Magnitudes           : G = 13.19 mag, RP = 12.51 mag, BP = 13.71 mag
 Object Magnitude          : V = 17.42 mag
 Estimated Magnitude Drop  : 4.3 mag
 Estimated Max. Duration   : 1.2 sec
 Speed of the shadow       : 5.0 km/s
 Object Mean Diameter      : 6.1 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.2800 arcs/min @ PA = 11 deg
 Horizontal Parallax       : 5.9350 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 148° (sunlit = 4%), Sun = 125°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.35 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#61
 Note                      : FP:true

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


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