Umbriel (Uranus/2)

Uranus/2Planet Satellite

event on 2020-09-21

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Radius (km)

—

Geometric albedo

Positive chords

United States of America

Observed from

Size — to scalevs Pluto

UMBRIEL (URANUS/2) · R — KMPLUTO · R 1188 KM

Umbriel (Uranus/2) — this objectPluto — comparison

Physical properties

Radius eq. (km)—

Equivalent radius (km)—

Oblateness—

Axis ratios (b/a · c/a)—

Density (g/cm³)—

ShapeMaclaurin

Albedo (V)—

Orbit — top viewheliocentric

19.191

a (AU)

0.0472

0.7699

i (deg)

Occultation record

Event date2020-09-21

Observed fromUnited States of America

Positive chords14

KindMain

Delta (au)19.02

Star G mag.13.4

Object G mag.14.9

Astrometryfeeds NIMA ephemeris

Position Date (JD)—

RA position—

Error RA·cos(δ) (mas)—

DEC position—

Error DEC (mas)—

Atmosphere

Pressure (nbar)—

Atm. gas—

Reference & provenance

Lucky Star projectYes

Referencepreliminary

DOI—

Linkhttp://www.asteroidoccultation.com/observations/Results/Reviewed/Data2020/20200921_Umbriel_PROFILE_ALL_REPORTED.gif

Comment—