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Stellar Occultation by (617) Patroclus on 2026-01-04 (22:37:04 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] : 86357fe0-de6d-11f0-4858-4e35ffa85da4 [asteroids]

 Occultation Date + Time   : 2026-01-04 at 22:37:04 UT +/- 0.39 min  [1]
 Object Designation        : (617) Patroclus
 Star Designation          : GDR3 0085740535209273984
 Star Coordinates (ICRF)   : RA = 02 28 49.2781, DE = +18 01 54.908  [2]
 Star Magnitudes           : G = 11.91 mag, RP = 11.24 mag, BP = 12.42 mag
 Object Magnitude          : V = 15.43 mag
 Estimated Magnitude Drop  : 3.6 mag
 Estimated Max. Duration   : 36.0 sec
 Speed of the shadow       : 3.9 km/s
 Object Mean Diameter      : 140.9 km  (src: astorb) => apparent = 46 mas
 Apparent Motion           : 0.0767 arcs/min @ PA = 336 deg
 Horizontal Parallax       : 2.0730 arcs
 Dynamical Class           : JTRO
 Elongation to Moon & Sun  : 85° (sunlit = 97%), Sun = 116°
 Cross-track uncertainty   : 11.0 mas = 33 km = 0.24 path-width (1-sig)
 RUWE and duplicate source : 1.1 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#86
 Note                      : FP:true

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


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