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Stellar Occultation by (2120) Tyumenia on 2026-09-21 (21:31:55 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] : 2c687cc0-d9b1-11f1-43f3-f836de874493 [observed]

 Occultation Date + Time   : 2026-09-21 at 21:31:55 UT +/- 0.02 min  [1]
 Object Designation        : (2120) Tyumenia
 Star Designation          : GDR3 2821676797738039296
 Star Coordinates (ICRF)   : RA = 23 51 12.0195, DE = +17 59 49.928  [2]
 Star Magnitudes           : G = 15.08 mag, RP = 14.68 mag, BP = 15.32 mag
 Object Magnitude          : V = 15.2 mag
 Estimated Magnitude Drop  : 0.8 mag
 Estimated Max. Duration   : 3.3 sec
 Speed of the shadow       : 12.6 km/s
 Object Mean Diameter      : 41.2 km  (src: astorb) => apparent = 30 mas
 Apparent Motion           : 0.5517 arcs/min @ PA = 228 deg
 Horizontal Parallax       : 4.6560 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 65° (sunlit = 77%), Sun = 162°
 Cross-track uncertainty   : 1.3 mas = 1 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL74
 Note                      : FP:true

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


More Data and Informations
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