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Stellar Occultation by (14612) Irtish on 2025-09-20 (18:16:09 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] : 79163ea0-ddb7-11f0-547e-5d58fb6b5b51 [observed]

 Occultation Date + Time   : 2025-09-20 at 18:16:09 UT +/- 0.0 min  [1]
 Object Designation        : (14612) Irtish
 Star Designation          : GDR3 6839169999321344896
 Star Coordinates (ICRF)   : RA = 21 56 05.0353, DE = -15 14 10.604  [2]
 Star Magnitudes           : G = 13.63 mag, RP = 13.15 mag, BP = 13.93 mag
 Object Magnitude          : V = 17.96 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 1.0 sec
 Speed of the shadow       : 9.1 km/s
 Object Mean Diameter      : 9.1 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.3167 arcs/min @ PA = 241 deg
 Horizontal Parallax       : 3.6980 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 160° (sunlit = 1%), Sun = 148°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#66
 Note                      : FP:true

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


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