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Occultation event

Pluto

1930 BMTNO> PlutinoAtmosphere

event on 2002-07-20

1189

Radius (km)

0.57

Geometric albedo

1

Positive chords

Chile

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 date2002-07-20

Observed fromChile

Positive chords1 // radius lower limit

KindMain

Delta (au)30.24

Star G mag.16

Object G mag.—

Astrometryfeeds NIMA ephemeris

Position Date (JD)2452475.571988420

RA position17 00 18.03018

Error RA·cos(δ) (mas)10

DEC position-12 41 41.9934

Error DEC (mas)15

Atmosphere

Pressure (nbar)—

Atm. gas—

Reference & provenance

Lucky Star projectYes

ReferenceSicardy et al., Nature, 2003

DOI—

Linkhttps://doi.org/10.1038/nature01766

Commentposition from Desmars et al. A&A, 2019 (https://doi.org/10.1051/0004-6361/201834958)

Pluto occultation — 2002-07-20 · SOSB / Lucky Star