Occultation event
Pluto
event on 2002-08-21
1189
Radius (km)
0.57
Geometric albedo
1
Positive chords
United States of America
Observed from
Size — to scalevs Charon
PLUTO · R 1189 KMCHARON · R 606 KM
Pluto — this objectCharon — comparison
Physical properties
Radius eq. (km)> 1189 ± 1.6
Equivalent radius (km)1189.1 ± 2.3
Oblateness4 ± <
Axis ratios (b/a · c/a)—
Density (g/cm³)1.854 ± 0.011
ShapeSpherical
Albedo (V)0.57 ± 0.09
Orbit — top viewheliocentric
39.846
a (AU)
0.2537
e
17.103
i (deg)
Occultation record
Event date2002-08-21
Observed fromUnited States of America
Positive chords1 // radius lower limit
KindMain
Delta (au)30.24
Star G mag.16
Object G mag.—
Astrometryfeeds NIMA ephemeris
Position Date (JD)2452507.792037030
RA position16 58 49.43477
Error RA·cos(δ) (mas)0.2
DEC position-12 51 31.8833
Error DEC (mas)0.1
Atmosphere
Pressure (nbar)8080
Atm. gasN2
Reference & provenance
Lucky Star projectYes
ReferenceSicardy et al., Nature, 2003
CommentSee also Elliot et al., Nature 2003, Meza et al. & Desmars et al., A&A, 2019