periastra

See also: Periastra

English

Noun

periastra

1. plural of periastron
   • 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).

   • 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.