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English
Pronunciation
Noun
apoastron (plural apoastrons or apoastra)
- (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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