Quaoar

2002 LM60TNO> Hot C.

event on 2012-02-17

685

Radius (km)

—

Geometric albedo

Positive chords

France, Switzerland

Observed from

Size — to scalevs Pluto

QUAOAR · R 685 KMPLUTO · R 1188 KM

Quaoar — this objectPluto — comparison

Physical properties

Radius eq. (km)685 ± 445/-155

Equivalent radius (km)685 ± 445/-115

Oblateness0

Axis ratios (b/a · c/a)—

Density (g/cm³)—

ShapeUndetermined

Albedo (V)—

Orbit — top viewheliocentric

43.5

a (AU)

0.041

i (deg)

Occultation record

Event date2012-02-17

Observed fromFrance, Switzerland

Positive chords2

KindMain

Delta (au)43.52

Star G mag.—

Object G mag.21.778

Astrometryfeeds NIMA ephemeris

Position Date (JD)2455974.68750

RA position17 34 21.842097

Error RA·cos(δ) (mas)0.26

DEC position−15 42 10.33151

Error DEC (mas)0.22

Atmosphere

Pressure (nbar)no

Atm. gas—

Reference & provenance

Lucky Star projectYes

ReferenceRommel et al, A&A, 644, A40, 2020

CommentDave Herald and John Newmann report.