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Stellar Occultation by (211) Isolda on 2026-09-26 (18:15:02 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] : f05a13f0-d9b1-11f1-43f3-82e0dffb44cc [observed]

 Occultation Date + Time   : 2026-09-26 at 18:15:02 UT +/- 0.01 min  [1]
 Object Designation        : (211) Isolda
 Star Designation          : GDR3 4090353576665806976
 Star Coordinates (ICRF)   : RA = 18 27 18.0922, DE = -21 12 14.385  [2]
 Star Magnitudes           : G = 14.92 mag, RP = 13.73 mag, BP = 16.13 mag
 Object Magnitude          : V = 14.09 mag
 Estimated Magnitude Drop  : 0.4 mag
 Estimated Max. Duration   : 11.1 sec
 Speed of the shadow       : 12.9 km/s
 Object Mean Diameter      : 143.2 km  (src: astorb) => apparent = 62 mas
 Apparent Motion           : 0.3333 arcs/min @ PA = 87 deg
 Horizontal Parallax       : 2.7550 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 88° (sunlit = 100%), Sun = 93°
 Cross-track uncertainty   : 0.8 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.93 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL137
 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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