They had already passed apastron and were downward bound. From Wordnik.com. [Starfarers]
Nevertheless the ship took days, terrible days to reach apastron. From Wordnik.com. [Explorations]
The station was outward bound for the apastron of its shortened and cometary path. From Wordnik.com. [Starfarers]
In this region, nearing apastron, no unusual velocity change was needed to alter orbit radically. From Wordnik.com. [Starfarers]
These orbs complete a revolution in 180 years, and when in apastron are seventeen times more remote from each other than when at periastron. From Wordnik.com. [The Astronomy of Milton's 'Paradise Lost'] Reference
Now, at apastron, with Vixen's atmosphere to filter its radiation, the sun might almost have been Sol: smaller, brighter, but gentle in a blue sky where tall white clouds walked. From Wordnik.com. [Agent Of The Terran Empire]
The eccentricity of their orbit approaches in form that of Faye's comet, which travels round the Sun; consequently the stars, when at apastron, are twice their periastron distance. From Wordnik.com. [The Astronomy of Milton's 'Paradise Lost'] Reference
Any approach to, or recession from this point, must occur simultaneously with each; they must always occupy corresponding parts of their orbits, and be in apastron and at periastron in the same period of time. From Wordnik.com. [The Astronomy of Milton's 'Paradise Lost'] Reference
Consequently, neither star can approach or recede from this point without the other affecting a similar motion, they must be at periastron and apastron together, and any acceleration or retardation of speed must occur simultaneously with each. From Wordnik.com. [The Astronomy of Milton's 'Paradise Lost'] Reference
As the stars get farther apart then they start to travel slower and this is refered to as apastron. From Wordnik.com. [CreationWiki - Recent changes [en]]
When the two stars are the farthest apart then they will be traveling slower and this is refered to as apastron. From Wordnik.com. [CreationWiki - Recent changes [en]]
The accelerating force is vastly greater at periastron (when the two bodies are nearest each other) than at apastron. From Wordnik.com. [The Story of the Heavens] Reference
They wouldn't live to be crushed by disappointment when the Sky Fire receded as Beta went into the long swing toward apastron. From Wordnik.com. [Oomphel in the Sky] Reference
At periastron the disturbing force will, therefore, increase the apastron distance by an enormous amount, while at apastron it increases the periastron distance by a very small amount. From Wordnik.com. [The Story of the Heavens] Reference
Likewise, the lowest temperatures would come well after Talwin had gone through apastron, where insolation was about 0.45 Terran.). From Wordnik.com. [A Circus of Hells]
0.48 means the stars approach as close as 44 AUs at periastron and are as far apart as 124 AUs at apastron during their mutual orbit. From Wordnik.com. [Conservapedia - Recent changes [en]] Reference
0.87 astronomical units of Siekh; but apastron is at a full 2.62 a.u. ". From Wordnik.com. [A Circus of Hells]
"(It cannot raise the apastron enough. From Wordnik.com. [Starfarers]
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