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Stellar Occultation by (4092) Tyr on 2025-12-14 (20:33:03 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] : dc0fcf70-ddb8-11f0-547e-47e27feab59d [observed]

 Occultation Date + Time   : 2025-12-14 at 20:33:03 UT +/- 0.0 min  [1]
 Object Designation        : (4092) Tyr
 Star Designation          : GDR3 3362649162987612160
 Star Coordinates (ICRF)   : RA = 07 27 11.4348, DE = +19 06 21.685  [2]
 Star Magnitudes           : G = 10.36 mag, RP = 9.55 mag, BP = 11.07 mag
 Object Magnitude          : V = 17.07 mag
 Estimated Magnitude Drop  : 6.7 mag
 Estimated Max. Duration   : 0.8 sec
 Speed of the shadow       : 9.8 km/s
 Object Mean Diameter      : 7.5 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.4950 arcs/min @ PA = 269 deg
 Horizontal Parallax       : 5.3650 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 96° (sunlit = 23%), Sun = 152°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL67
 Note                      : FP:true

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


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