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Pluto's System: Facts, Data, Men and early Picture
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Fast Facts — Recent Technical information (Oct. 2005)
Object Name: Pluto
Object Description: Planet
Distance: Although its orbit is highly eccentric, Pluto's average distance from the Sun is 39,44 Astronomical Units (A.U.) or roughly 3,6 BMs (such as about 5,9 BKM).
Dimensions: Pluto has a diameter of roughly 1.475 miles (about 2.280 Km) at the equator.
About the Data Description: these HST data are from proposal 10427: H.A. Weaver (JHU/APL), M.W. Buie (Lowell Obs.), S.A. Stern, J.R. Spencer, E. Young, and L.A. Young (SwRI); and proposal 9391: M.W. Buie and W.M. Grundy (Lowell Obs.), E. Young, L.A. Young, and S.A. Stern (SwRI). M. Mutchler (STScI) and A.J. Steffl (SwRI) are also on the science team.
Instrument: ACS/WFC ACS/HRC
Exposure Date(s): May 15/18, 2005 various dates in 2002 and 2003
Filters: F606W (V) F475W (B) and F555W (V)
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(Dettagli)
E' molto più diffuso, a parer mio, uno stile di sistema solare come Trappist, dove i pianeti girano intorno alla loro stella, in distanze relativamente strette