Image: Wikimedia Commons

Phoebe

Moon of Saturn

Entitymoon of Saturn irregular moonQ17975

Also known as Saturn IX · Feba (Saturn)

Instance of: moon of Saturn
, irregular moon
Part of: Norse group

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

Phoebe is the most massive irregular satellite of Saturn with a mean diameter of 213 km (132 mi). It was discovered by William Henry Pickering on 18 March 1899 from photographic plates that had been taken by DeLisle Stewart starting on 16 August 1898 at the Boyden Station of the Carmen Alto Observatory near Arequipa, Peru. It was the first natural satellite to be discovered photographically.

Overview

All data

38 statements · 24% with external sources · numbers in brackets are citations

Orbits: Saturn
Discovered: August 16, 1898
Discovered by: William Henry Pickering
Named after: Phoebe
Orbital period: 550.5646 days
Mass: 8.289 zettagram
2
Sources
1.ssd.jpl.nasa.gov/?sat_phys_par
2.ssd.jpl.nasa.gov/?sat_phys_parRetrieved 2020-09-05
View statement on Wikidata ↗
Diameter: 220 km
Inclination: 173.04 degree relative to: ecliptic
151.78 degree relative to: celestial equator
Albedo: 0.081
Semi-major axis: 12.9M km
Connects with: Phoebe ring
Eccentricity: 0.1562
Radius: 106.5 km
1
Sources
1.Stated in Sizes, shapes, and derived properties of the saturnian satellites after the Cassini nominal mission
View statement on Wikidata ↗
Absolute magnitude: 6.59
1
Sources
1.Stated in NEOWISE: observations of the irregular satellites of Jupiter and Saturn
View statement on Wikidata ↗
Density: 1.6428 g/cm³
1
Sources
1.Stated in The Orbits of the Main Saturnian Satellites, the Saturnian System Gravity Field, and the Orientation of Saturn's Pole
View statement on Wikidata ↗

On other databases

16 identifiers linking Phoebe across the web's reference databases

Data quality

statements

24%

externally sourced

Source last edited October 10, 2026. AIDB refreshes this page daily.

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AIDB. (2026). Phoebe (Q17975). Retrieved from https://aidb.si/e/phoebe-Q17975