Occultation event
Bienor
event on 2017-12-29
26.95
Radius (km)
0.08
Geometric albedo
1
Positive chords
Japan
Observed from
Size — to scalevs Pluto
BIENOR · R 26.95 KMPLUTO · R 1188 KM
Bienor — this objectPluto — comparison
Physical properties
Radius eq. (km)> 26.95
Equivalent radius (km)75 ± 10
Oblateness0
Axis ratios (b/a · c/a)—
Density (g/cm³)—
ShapeTri-axial
Albedo (V)0.08 ± 2
Orbit — top viewheliocentric
16.5
a (AU)
0.201
e
20.7
i (deg)
Occultation record
Event date2017-12-29
Observed fromJapan
Positive chords1 // radius lower limit
KindMain
Delta (au)14.41
Star G mag.12.9464
Object G mag.—
Astrometryfeeds NIMA ephemeris
Position Date (JD)2458117.18333330
RA position02 49 15.578865
Error RA·cos(δ) (mas)0.42
DEC position38 29 52.39778
Error DEC (mas)0.4
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
ReferenceRommel et al, A&A, 644, A40, 2020
Link—
Comment—