apsis


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apsis

(pl. apsides), point in the orbitorbit,
in astronomy, path in space described by a body revolving about a second body where the motion of the orbiting bodies is dominated by their mutual gravitational attraction.
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 of a body where the body is neither approaching nor receding from another body about which it revolves. Any elliptical orbit has two apsides. At the perigee the moon or other satellite is as close as it ever gets to the earth, and it begins to move away; at the apogee it is as far away as it gets, and it begins to move closer. Similarly, in the orbit of the earth or another planet around the sun, the perihelion is the point of closest approach and the aphelion is the point of farthest recession. In the orbit of the stars in a binary starbinary star
or binary system,
pair of stars that are held together by their mutual gravitational attraction and revolve about their common center of mass. In 1650 Riccioli made the first binary system discovery, that of the middle star in the Big Dipper's handle, Zeta
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 system, the periastron is the point of closest approach and the apastron the point of farthest recession. A line connecting the two apsidal points of an elliptical orbit (e.g., the aphelion and perihelion) is called the line of apsides; it is the major axis of the ellipse. This line may precess because of gravitational influences of other bodies or relativistic effects.

apsis

[′ap·səs]
(astronomy)
In celestial mechanics, either of the two orbital points nearest or farthest from the center of attraction. Also known as apse.

apsis

The semicircular termination of any rectangular chamber; an apse.

apsis

1. either of two points lying at the extremities of an eccentric orbit of a planet, satellite, etc., such as the aphelion and perihelion of a planet or the apogee and perigee of the moon. The line of apsides connects two such points and is the principal axis of the orbit
2. another name for apse
References in periodicals archive ?
We are very excited to have these prepaid solutions available to operators, system integrators and SIM card manufacturers directly through our regional sales organization" states Holger Mackenthun, vice president of LHS APSIS Business Unit.
will head worldwide sales, consulting, integration and services for APSIS (Application Platform for SIM Card Services) and SIM card (Subscriber Identity Module) related products and services.
Additionally, APSIS provides a wide range of benefits and advantages to prepaid subscribers network operations, service providers and resellers.
However, he may be Abdullah's second string behind the AndrA Fabre-trained Apsis, who has had training problems.
The companies represented at the Swedish Trade Council pavilion are: Advoco Software AB, Agama echnologies AB, Apsis AB, Avista/Stockholm Software Factory AB, Birdstep Technology, Catway AB, Elevate Nordic AB, Hexatronic Network Solutions AB, Intellyweb AB, JLT Mobile Computers AB, myDOQ technologies AB, Netintact AB, Nordic Tech Sales AB, Orexis Communication AB, Perfect Communication, Possio AB, Propac AB, Relate International AB, RotoSub AB, Teknikhuset AB/House of Technology, Viking Telecom AB and XIP Technology AB.
Set Alight ran the fastest Thomas Bryon ever and was winning the race for a second time for owner Khalid Abdullah, whose colours were carried to victory in 2003 with Apsis.
Sweet Stream ran on well in the closing stages to beat the favourite Apsis.