Apsis
An apsis (Greek: ἁψίς; plural apsides /ˈæpsᵻdiːz/, Greek: ἁψίδες) is an extreme point in an object's orbit. The word comes via Latin from Greek and is cognate with apse. For elliptic orbits about a larger body, there are two apsides, named with the prefixes peri- (from περί (peri), meaning "near") and ap-, or apo- (from ἀπ(ό) (ap(ó)), meaning "away from") added to a reference to the thing being orbited.
A straight line connecting the pericenter and apocenter is the line of apsides. This is the major axis of the ellipse, its greatest diameter. For a two-body system the center of mass of the system lies on this line at one of the two foci of the ellipse. When one body is sufficiently larger than the other it may be taken to be at this focus. However whether or not this is the case, both bodies are in similar elliptical orbits each having one focus at the system's center of mass, with their respective lines of apsides being of length inversely proportional to their masses. Historically, in geocentric systems, apsides were measured from the center of the Earth. However, in the case of the Moon, the center of mass of the Earth–Moon system, or Earth–Moon barycenter, as the common focus of both the Moon's and Earth's orbits about each other, is about 74% of the way from Earth's center to its surface.
Podcasts:
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abbie Lynn
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by Abeline
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by Abeline
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by Abeline
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by Abeline
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by Abeline
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by Abeline
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by Apollyon
Abbie Lynn
by: Abbie LynnTexas Western Swing Dance Tempo
[CHO:] HE’S MY BABY….AND I LOVE HIM…
I KNOW I ALWAYS WILL…..
HE DRIVES ME O SO, CRAZY….AND HE GIVES ME SUCH A THRILL….
HE BRINGS ME SUNSHINE EVERY MORN…
STARLIGHT EVERY NIGHT…
HE’S THE ONE I LOVE…THE ONE I’M SPEAKING OF….
HE ALWAYS DOES ME RIGHT….
[1] When I hitched my wagon to his star….
I had no idea we’d ever go this far…
Drives me a little on the wild side…
Spend most of my time hanging on for dear life….
[CHO:] HE’S MY BABY….AND I LOVE HIM…
I KNOW I ALWAYS WILL…..
HE DRIVES ME O SO, CRAZY….HE GIVES ME SUCH A THRILL….
HE BRINGS ME SUNSHINE EVERY MORN…
STARLIGHT EVERY NIGHT…
HE’S THE ONE I LOVE…THE ONE I’M SPEAKING OF….
HE ALWAYS DOES ME RIGHT….
Turn-a-round/Channel
[2] When the skies look a little bit cloudy…
I know I can count on him….
He’ll be right there when the chips are down…
And help me stack them up again…
We’ve seen high and low, thick and thin…everything in between…
But he’s my sweet baby…I don’t mean maybe…
He means the world to me….
[CHO:] HE’S MY BABY….AND I LOVE HIM…
I KNOW I ALWAYS WILL…..
HE DRIVES ME O SO, CRAZY….AND HE GIVES ME SUCH A THRILL….
HE BRINGS ME SUNSHINE EVERY MORN…
STARLIGHT EVERY NIGHT…
HE’S THE ONE I LOVE…THE ONE I’M SPEAKING OF….
HE ALWAYS DOES ME RIGHT….
TAG:
He’s the one I love…[sustain] the one I’m speaking of….
He always does me right….[yeah]