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Stellar Occultation by (2731) Cucula on 2026-02-09 (21:57:06 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] : 2f80fb00-de74-11f0-4858-b4a7f6bf8f6b [asteroids]

 Occultation Date + Time   : 2026-02-09 at 21:57:06 UT +/- 0.0 min  [1]
 Object Designation        : (2731) Cucula
 Star Designation          : GDR3 0650494997669013504
 Star Coordinates (ICRF)   : RA = 08 11 45.3296, DE = +12 48 55.522  [2]
 Star Magnitudes           : G = 11.37 mag, RP = 10.71 mag, BP = 11.87 mag
 Object Magnitude          : V = 16.49 mag
 Estimated Magnitude Drop  : 5.1 mag
 Estimated Max. Duration   : 3.2 sec
 Speed of the shadow       : 15.7 km/s
 Object Mean Diameter      : 50.9 km  (src: astorb) => apparent = 25 mas
 Apparent Motion           : 0.4633 arcs/min @ PA = 297 deg
 Horizontal Parallax       : 3.1330 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 112° (sunlit = 46%), Sun = 160°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.46 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#79
 Note                      : FP:true

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


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