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)1187 ± 2.3

Oblateness4 ± <

Axis ratios (b/a · c/a)—

Density (g/cm³)1.854 ± 0.011

ShapeMaclaurin

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

Where on the skyThe published position of this event, against the constellations.

Chart data: d3-celestial (BSD-3-Clause), from Hipparcos / Yale BSC and the IAU figures. Position J2000.

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)