Io (Jupiter/1)

Jupiter/1Planet SatelliteOther

event on 1971-05-14

1828

Radius (km)

—

Geometric albedo

Positive chords

Jamaica, United States of America

Observed from

Size — to scalevs Pluto

IO (JUPITER/1) · R 1828 KMPLUTO · R 1188 KM

Io (Jupiter/1) — this objectPluto — comparison

Physical properties

Radius eq. (km)1828 ± 2.5

Equivalent radius (km)1818.8 ± 2.5

Oblateness0.01 ± 0.01

Axis ratios (b/a · c/a)—

Density (g/cm³)2.86 ± 0.34

ShapeMaclaurin

Albedo (V)—

Orbit — top viewheliocentric

5.203

a (AU)

0.0484

1.305

i (deg)

Occultation record

Event date1971-05-14

Observed fromJamaica, United States of America

Positive chords5

KindMain

Delta (au)4.37

Star G mag.—

Object G mag.—

Astrometryfeeds NIMA ephemeris

Position Date (JD)—

RA position—

Error RA·cos(δ) (mas)—

DEC position—

Error DEC (mas)—

Atmosphere

Pressure (nbar)< 0.09

Atm. gasN2,CH4, H2

Reference & provenance

Lucky Star projectNo

ReferenceTaylor and Smith&Smith, Icar, 1972, Hubbard&vanFlandern, AJ, 1972

DOI10.1016/0019-1035(72)90056-5

Linkhttps://doi.org/10.1016/0019-1035(72)90056-5

Commentsee also: 10.1086/111246. Double star detected