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Stellar Occultation by (116) Sirona on 2026-05-26 (20:41:17 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] : a4845440-33bc-11f1-6999-dfc3bff8b651 [asteroids]

 Occultation Date + Time   : 2026-05-26 at 20:41:17 UT +/- 0.01 min  [1]
 Object Designation        : (116) Sirona
 Star Designation          : GDR3 6300415898780847872
 Star Coordinates (ICRF)   : RA = 14 26 03.7063, DE = -12 55 35.655  [2]
 Star Magnitudes           : G = 11.88 mag, RP = 11.2 mag, BP = 12.41 mag
 Object Magnitude          : V = 11.59 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 9.6 sec
 Speed of the shadow       : 7.5 km/s
 Object Mean Diameter      : 71.7 km  (src: astorb) => apparent = 60 mas
 Apparent Motion           : 0.3750 arcs/min @ PA = 278 deg
 Horizontal Parallax       : 5.3180 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 23° (sunlit = 82%), Sun = 153°
 Cross-track uncertainty   : 2.3 mas = 2 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 1.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#142
 Note                      : FP:true

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


More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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