Occultation event

Pluto

1930 BMTNO> PlutinoAtmosphere

event on 1988-06-09

1189

Radius (km)

0.57

Geometric albedo

Positive chords

Australia, New Zealand

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 date1988-06-09

Observed fromAustralia, New Zealand

Positive chords8

KindMain

Delta (au)30.14

Star G mag.12.1

Object G mag.—

Astrometryfeeds NIMA ephemeris

Position Date (JD)2447321.943946750

RA position14 52 09.96347

Error RA·cos(δ) (mas)10

DEC position00 45 03.1506

Error DEC (mas)10

Atmosphere

Pressure (nbar)4280

Atm. gasN2

Reference & provenance

Lucky Star projectNo

ReferenceMillis et al., Icar, 1993 & Meza et al. A&A, 2019

DOI10.1006/icar.1993.1126

Linkhttps://doi.org/10.1006/icar.1993.1126

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