About: Phoebe (moon)   Sponge Permalink

An Entity of Type : dbkwik:resource/SpIhbZ5-xyGv-pUxfayU_w==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Phoebe (; Greek: Phoíbē) is an irregular satellite of Saturn with a mean diameter of 213 km. It was discovered by William Henry Pickering on 17 March 1899 from photographic plates that had been taken starting on 16 August 1898 at the Boyden Observatory near Arequipa, Peru, by DeLisle Stewart. It was the first satellite to be discovered photographically. Phoebe is roughly spherical and has a differentiated interior. It was spherical and hot early in its history and was battered out of roundness by repeated impacts. It is thought to be a captured planetesimal from the Kuiper belt.

AttributesValues
rdf:type
rdfs:label
  • Phoebe (moon)
rdfs:comment
  • Phoebe (; Greek: Phoíbē) is an irregular satellite of Saturn with a mean diameter of 213 km. It was discovered by William Henry Pickering on 17 March 1899 from photographic plates that had been taken starting on 16 August 1898 at the Boyden Observatory near Arequipa, Peru, by DeLisle Stewart. It was the first satellite to be discovered photographically. Phoebe is roughly spherical and has a differentiated interior. It was spherical and hot early in its history and was battered out of roundness by repeated impacts. It is thought to be a captured planetesimal from the Kuiper belt.
sameAs
dcterms:subject
dbkwik:nasa/proper...iPageUsesTemplate
physical characteristics
  • yes
orbit ref
discoverer
single temperature
  • ≈ 73 K
Name
  • Phoebe
discovery
  • yes
Align
  • center
surface grav
  • 0(xsd:double)
Caption
  • 3(xsd:integer)
  • Cassini mosaic of Phoebe
  • Map of Phoebe's north polar region
  • Map of Phoebe's south polar region
Albedo
  • 0(xsd:double)
Width
  • 214(xsd:integer)
  • 275(xsd:integer)
alt names
  • Saturn IX
Inclination
  • 151(xsd:double)
  • 173(xsd:double)
Satellite Of
discovered
  • --03-17
direction
  • horizontal
Image
  • Phoebe 2005 south polar projection PIA07797.jpg
  • Phoebe contour map PIA15507.jpg
  • Phoebe north polar region PIA 07796.png
Escape velocity
  • ≈ 0.10 km/s
adjectives
  • Phoebean
Axial tilt
  • 152(xsd:double)
abstract
  • Phoebe (; Greek: Phoíbē) is an irregular satellite of Saturn with a mean diameter of 213 km. It was discovered by William Henry Pickering on 17 March 1899 from photographic plates that had been taken starting on 16 August 1898 at the Boyden Observatory near Arequipa, Peru, by DeLisle Stewart. It was the first satellite to be discovered photographically. Phoebe was the first target encountered upon the arrival of the Cassini spacecraft in the Saturn system in 2004, and is thus unusually well-studied for an irregular satellite of its size. Cassini's trajectory to Saturn and time of arrival were specifically chosen to permit this flyby. After the encounter and its insertion into orbit, Cassini did not go much beyond the orbit of Iapetus. Phoebe is roughly spherical and has a differentiated interior. It was spherical and hot early in its history and was battered out of roundness by repeated impacts. It is thought to be a captured planetesimal from the Kuiper belt.
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