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Occultation event

Bienor

2000 QC243CentaurDouble or Binary
event on 2019-01-11
119
Radius (km)
0.08
Geometric albedo
5
Positive chords
Spain
Observed from
Size — to scalevs Pluto
BIENOR · R 119 KMPLUTO · R 1188 KM
Bienor — this objectPluto — comparison
Physical properties
Radius eq. (km)119 ± 7
Equivalent radius (km)75 ± 10
Oblateness
Axis ratios (b/a · c/a)
Density (g/cm³)
ShapeTri-axial
Albedo (V)0.08 ± 2
Orbit — top viewheliocentric
Neptune 30 AU
16.5
a (AU)
0.201
e
20.7
i (deg)
Occultation record
each line — one station saw the star vanish
Event date2019-01-11
Observed fromSpain
Positive chords5
KindMain
Delta (au)14.161
Star G mag.15.989
Object G mag.19.363
Astrometryfeeds NIMA ephemeris
Position Date (JD)
RA position
Error RA·cos(δ) (mas)
DEC position
Error DEC (mas)
Atmosphere
Pressure (nbar)
Atm. gas
Reference & provenance
Lucky Star projectYes
ReferenceE. Fernández-Valenzuela et al, A&A, ? , ?, 2022
DOI
Link
Comment
Bienor occultation — 2019-01-11 · SOSB / Lucky Star