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Stellar Occultation by (506419) 1999 TC269 on 2025-09-05 (21:21:10 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] : 718f0f40-ddb7-11f0-547e-9538d5efb2d8 [observed]

 Occultation Date + Time   : 2025-09-05 at 21:21:10 UT +/- 0.07 min  [1]
 Object Designation        : (506419) 1999 TC269
 Star Designation          : GDR3 2685719814140119808
 Star Coordinates (ICRF)   : RA = 21 16 07.6454, DE = -01 57 48.339  [2]
 Star Magnitudes           : G = 8.53 mag, RP = 7.32 mag, BP = 10.04 mag
 Object Magnitude          : V = 19.41 mag
 Estimated Magnitude Drop  : 10.9 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 7.1 km/s
 Object Mean Diameter      : 1.60 km  (src: astorb) => apparent = 2 mas
 Apparent Motion           : 0.4917 arcs/min @ PA = 247 deg
 Horizontal Parallax       : 7.3340 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 16° (sunlit = 96%), Sun = 154°
 Cross-track uncertainty   : 27.3 mas = 23 km = 14.84 path-width (1-sig)
 RUWE and duplicate source : 1.16 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#30
 Note                      : FP:true

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


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