apoastron

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English

Pronunciation

  • IPA(key): /æpəʊˈæstɹən/

Noun

apoastron (plural apoastrons or apoastra)

  1. (astronomy) Alternative form of apastron
    • 1988 January 19, D. V. Gal’tsov, É. Masar, “Motion of bodies in Schwarzschild spacetime with conical singularities”, in Theoretical and Mathematical Physics, volume 80, published August 1989:
      [] apoastra (i) and the circle of the periastra (2).
    • 1995 June 13, H. Beust, A-M. Lagrange, F. Plazy, D. Mouillet, “The β Pictoris circumstellar disk. XXII. Investigating the model of multiple cometary infalls”, in Astronomy and Astrophysics: A European Journal, volume 310, number 1, Springer, published June 1996, section 6, page 194, column 1:
      The initial Δv applied to them causes a large spread in the apoastra and in the orbital periods.
    • 1999 April 22, Jack J. Lissauer, “Three planets for Upsilon Andromedae”, in Nature, volume 398, Macmillan Magazines Ltd, figure 1, page 659, column 2:
      The rest of the plot shows the temporal evolution of the periastra and apoastra of the three planets using the nominal parameters on the left as initial conditions.
    • 2010, Imke de Pater, Jack J. Lissauer, “Exoplanet Formation Models”, in Planetary Sciences, 2nd edition, Cambridge University Press, →ISBN, figure 13.28, page 547, column 2:
      The planets’ masses are given in units of M and the periastra, semimajor axes and apoastra are shown below.

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