Occultation event
2003 UY117
event on 2020-10-23
166
Radius (km)
0.139
Geometric albedo
4
Positive chords
Spain
Observed from
Size — to scalevs Pluto
2003 UY117 · R 166 KMPLUTO · R 1188 KM
2003 UY117 — this objectPluto — comparison
Physical properties
Radius eq. (km)166 ± 12
Equivalent radius (km)117.5 ± 12.5
Oblateness0.35 ± 0.15
Axis ratios (b/a · c/a)0.65 · 0.54
Density (g/cm³)—
ShapeTri-axial
Albedo (V)0.139 ± 0.026
Orbit — top viewheliocentric
55.2
a (AU)
0.413
e
7.6
i (deg)
Occultation record
Event date2020-10-23
Observed fromSpain
Positive chords4
KindMain
Delta (au)33.4676
Star G mag.14.5
Object G mag.21.1
Astrometryfeeds NIMA ephemeris
Position Date (JD)2459146.4301134259
RA position03 23 26.21404
Error RA·cos(δ) (mas)0.32
DEC position22 47 19.3184
Error DEC (mas)0.38
Where on the skyThe published position of this event, against the constellations.
Chart data: d3-celestial (BSD-3-Clause), from Hipparcos / Yale BSC and the IAU figures. Position J2000.
Atmosphere
Pressure (nbar)—
Atm. gas—
Reference & provenance
Lucky Star projectYes
ReferenceKretlow et al. submitted 2024
DOI—
CommentKretlow et al. submitted 2024