Occultation event
Quaoar
event on 2019-09-26
543
Radius (km)
0.124
Geometric albedo
4
Positive chords
South Africa
Observed from
3D modelQuaoar · interactive
Downloads 4.6 MB
Model of the occulting body, not a product of this event — a reconstruction, not a direct measurement. The values below are what this occultation measured.
Size — to scalevs Pluto
QUAOAR · R 543 KMPLUTO · R 1188 KM
Quaoar — this objectPluto — comparison
Physical properties
Radius eq. (km)—
Equivalent radius (km)543 ± 2
Oblateness—
Axis ratios (b/a · c/a)—
Density (g/cm³)1.99 ± 0.46
ShapeMaclaurin
Albedo (V)0.124 ± 0.006
Orbit — top viewheliocentric
43.5
a (AU)
0.041
e
8
i (deg)
Occultation record
Event date2019-09-26
Observed fromSouth Africa
Positive chords4
KindMain
Delta (au)42.87
Star G mag.15.6
Object G mag.18.8
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
Referencepreliminary
DOI—
Comment—