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Stellar Occultation by (20841) 2000 UM69 on 2026-08-19 (19:08:53 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] : 198cf0c0-d9ae-11f1-43f3-f85c7b751f87 [observed]

 Occultation Date + Time   : 2026-08-19 at 19:08:53 UT +/- 0.01 min  [1]
 Object Designation        : (20841) 2000 UM69
 Star Designation          : GDR3 6245291436648517504
 Star Coordinates (ICRF)   : RA = 16 25 56.8521, DE = -18 39 14.340  [2]
 Star Magnitudes           : G = 14.43 mag, RP = 13.56 mag, BP = 15.21 mag
 Object Magnitude          : V = 19.41 mag
 Estimated Magnitude Drop  : 5.0 mag
 Estimated Max. Duration   : 0.6 sec
 Speed of the shadow       : 9.8 km/s
 Object Mean Diameter      : 6.3 km  (src: astorb) => apparent = 3 mas
 Apparent Motion           : 0.2850 arcs/min @ PA = 95 deg
 Horizontal Parallax       : 3.0880 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 17° (sunlit = 47%), Sun = 101°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.13 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL48
 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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