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Occultation event

Quaoar

2002 LM60TNO> Hot C.
event on 2013-07-09
572.5
Radius (km)
Geometric albedo
1
Positive chords
Venezuela
Observed from
Size — to scalevs Pluto
QUAOAR · R 572.5 KMPLUTO · R 1188 KM
Quaoar — this objectPluto — comparison
Physical properties
Radius eq. (km)> 572.5
Equivalent radius (km)
Oblateness0
Axis ratios (b/a · c/a)
Density (g/cm³)
ShapeUndetermined
Albedo (V)
Orbit — top viewheliocentric
Neptune 30 AU
43.5
a (AU)
0.041
e
8
i (deg)
Occultation record
each line — one station saw the star vanish
Event date2013-07-09
Observed fromVenezuela
Positive chords1 // radius lower limit
KindMain
Delta (au)42.12
Star G mag.14.3605
Object G mag.20.77
Astrometryfeeds NIMA ephemeris
Position Date (JD)2456482.61111110
RA position17 34 40.463793
Error RA·cos(δ) (mas)0.17
DEC position−15 23 37.48276
Error DEC (mas)0.3
Atmosphere
Pressure (nbar)no
Atm. gas
Reference & provenance
Lucky Star projectYes
ReferenceRommel et al, A&A, 644, A40, 2020
CommentThis object has an ambiguous solution where the center of it could be north or south of the observed chord. In this case we assumed the north position.
Quaoar occultation — 2013-07-09 · SOSB / Lucky Star