Occultation event

Pluto

1930 BMTNO> PlutinoAtmosphere

event on 2011-06-23

1189

Radius (km)

0.57

Geometric albedo

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

17.103

i (deg)

Occultation record

Event date2011-06-23

Observed fromUnited States of America

Positive chords1 // radius lower limit

KindDouble

Delta (au)31.04

Star G mag.14.4

Object G mag.—

Astrometryfeeds NIMA ephemeris

Position Date (JD)2455735.974863420

RA position18 25 55.47963

Error RA·cos(δ) (mas)10

DEC position-18 48 06.9712

Error DEC (mas)10

Atmosphere

Pressure (nbar)—

Atm. gasN2

Reference & provenance

Lucky Star projectNo

ReferenceGulbis et al., Icar, 2015

DOI10.1016/j.icarus.2014.05.014

Linkhttps://doi.org/10.1016/j.icarus.2014.05.014

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