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Stellar Occultation by (160) Una on 2026-04-18 (03:35:54 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] : 16d86800-33be-11f1-6999-20c1f3dfa668 [asteroids]

 Occultation Date + Time   : 2026-04-18 at 03:35:54 UT +/- 0.01 min  [1]
 Object Designation        : (160) Una
 Star Designation          : GDR3 4072511565207332480
 Star Coordinates (ICRF)   : RA = 18 38 43.7106, DE = -27 29 42.512  [2]
 Star Magnitudes           : G = 14.04 mag, RP = 13.06 mag, BP = 15.03 mag
 Object Magnitude          : V = 14.28 mag
 Estimated Magnitude Drop  : 0.9 mag
 Estimated Max. Duration   : 11.3 sec
 Speed of the shadow       : 7.2 km/s
 Object Mean Diameter      : 81.2 km  (src: astorb) => apparent = 47 mas
 Apparent Motion           : 0.2467 arcs/min @ PA = 103 deg
 Horizontal Parallax       : 3.6570 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 119° (sunlit = 1%), Sun = 109°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#73
 Note                      : FP:true

 Object is a <TNOs are Cool> target !

 [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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