Actaea (moon)
Moon of Salacia
Actaea, formal designation (120347) Salacia I, is the only known moon of the large classical Kuiper belt object 120347 Salacia. It was discovered by Keith S. Noll, Harold F. Levison, Denise C. Stephen and William M. Grundy using discovery images taken by the Hubble Space Telescope on 21 July 2006.
Nº Q343201 ★
Common · Knowledge
Actaea (moon)
Moon of Salacia
Actaea, formal designation (120347) Salacia I, is the only known moon of the large classical Kuiper belt object 120347 Salacia. It was discovered by Keith S. Noll, Harold F. Levison, Denise C. Stephen and William M. Grundy using discovery images taken by the Hubble Space Telescope on 21 July 2006.
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From Wikipedia
Actaea, formal designation (120347) Salacia I, is the only known moon of the large classical Kuiper belt object 120347 Salacia. It was discovered by Keith S. Noll, Harold F. Levison, Denise C. Stephen and William M. Grundy using discovery images taken by the Hubble Space Telescope on 21 July 2006. Its diameter is estimated to be about 393±33 km in diameter, making it the fifth-biggest known moon of a trans-Neptunian object, being after Charon (1212±1 km), Dysnomia (615+60−50 km), Vanth (442.5±10.2 km), and Ilmarë (403±40 km). Under the assumption that Actaea has a density of 0.7 g/cm3, which is thought to be more typical that of trans-Neptunian objects' moons, The mass ratio between Actaea and Salacia will be approximately 0.044:1. It has an extremely low albedo of 0.021±0.004, which is approximately half the albedo of Salacia (0.041±0.004).
Text: Wikipédia, CC BY-SA 4.0. · Image: William Grundy/Keck Observatory Archive/W. M. Keck Observato... (Public domain) ·
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