Definitions
Century Dictionary and Cyclopedia
- n. In the orbit of any heavenly body which moves around another, the point where the former approaches nearest to the primary: usually applied to double stars, but also generally to any satellite.
Wiktionary
- n. That point of the orbit of a celestial body which is closest to the star around which the body is orbiting.
GNU Webster's 1913
- n. That point, in the real or apparent orbit of one star revolving around another, at which the former is nearest to the latter.
Examples
“In this scenario, as a smaller companion in the system came on its closest approach periastron the outer layers of the LBV, which are already unstable and loosely bound due to the size of the star, are pulled off due to tidal forces.”
Do Eruptions of P Cygni Point to a Companion? | Universe Today
“With these simple starting parameters, Kashi showed that it was possible to produce a situation in which the onset of eruptions was similar to the periastron approach.”
Do Eruptions of P Cygni Point to a Companion? | Universe Today
“I therefore predict that a continuous 7 year long observation of pronounced lines may reveal a small doppler shift variation, close to the periastron passage.”
Do Eruptions of P Cygni Point to a Companion? | Universe Today
“Importantly, any captured star would form a highly elliptical orbit, whose periastron encounters would strip the outer layers of both stars, leaving their hotter cores exposed – the blue stragglers we see.”
Blue Stragglers Can Be Either Vampires or Stellar Bad-Boys | Universe Today
“In the middle of the short but furious northern summer, which includes periastron, total insolation is more than double what Earth gets; in the depth of the long northern winter, it is barely less than Terrestrial average.”
The Queen of Air and Darkness
“Then summer was the six-month period during which Talwin passed from one of those points, through periastron, to the other end of the line segment.”
A Circus of Hells
“We won't be under any such extreme condition, but I don't expect they can track us around periastron.”
A Circus of Hells
“It was midwinter, but also periastron; only long nights and frequent rains marked the season in this hemisphere.”
Agent Of The Terran Empire
“The planet's axial inclination was 24-, and northern midsummer fell nearly at periastron.”
Agent Of The Terran Empire
“All went well, there were no incidents, no vessels disturbed him; though had the two components of the binary been at periastron, it would have simplified the work with the position micrometer.”
Lists
These user-created lists contain the word ‘periastron’.
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Astronomical Words
Words used in Astronomy
perihelion, perigee, apoapsis, periastron, apastron, apsis, zenith, aphelion, perturbations, barycenter, equinox, nadir and 21 more...
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rememberers
prolix, ageusia, animadversion, anodyne, antic, arabesque, beadle, brachymetropia, colophon, desquamation, diaphoresis, diegesis and 2770 more...
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ephemerides
being words related to astronomy, stellar cartography, and the music of the spheres, including names of planets, stars and constellations
ephemerides, ascension, declination, apogee, planet, star, constellation, galaxy, system, syzygy, ecliptic, sun and 202 more...
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around bend words
ank-, ant- and others
angle, ankle, ankylosaur, england, anchor, ancon, elbow, ankylosis, ancylostomiasis, hook, uncinate, uncus and 66 more...
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