Orbit

In physics, an orbit is the gravitationally curved path of an object about a point in space, for example the orbit of a planet about a star. Orbits of planets are typically elliptical, and the central mass being orbited is at a focal point of the ellipse.

Current understanding of the mechanics of orbital motion is based on Albert Einstein's general theory of relativity, which accounts for gravity as due to curvature of space-time, with orbits following geodesics. For ease of calculation, relativity is commonly approximated by the force-based theory of universal gravitation based on Kepler's laws of planetary motion.

History

Historically, the apparent motions of the planets were described geometrically (without regard to gravity) in terms of epicycles, which are the sums of numerous circular motions. Theories of this kind predicted paths of the planets moderately well, until Johannes Kepler was able to show that the motions of planets were elliptical motions.

The celestial spheres model is a geocentric model of the solar system originally used to explain the apparent motion of the planets in the sky. It posited the existence of perfect moving spheres or rings to which the stars and planets were attached. After the planets' motions were more accurately measured, theoretical mechanisms such as deferent and epicycles were added. Although it was capable of accurately predicting the planets' positions in the sky, more and more epicycles were required as the measurements became more accurate, hence the model became more and more unwieldy.

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ArcelorMittal Orbit

The ArcelorMittal Orbit is a 114.5 metre (376 feet) tall sculpture and observation tower in the Queen Elizabeth Olympic Park in Stratford, London. It is Britain's largest piece of public art, and is intended to be a permanent lasting legacy of London's hosting of the 2012 Summer Olympic and Paralympic Games, assisting in the post-Olympics regeneration of the Stratford area. Sited between the Olympic Stadium and the Aquatics Centre, it allows visitors to view the whole Olympic Park from two observation platforms.

Orbit was designed by Turner-Prize winning artist Sir Anish Kapoor and Cecil Balmond of engineering Group Arup. Announced on 31 March 2010, it was expected to be completed by December 2011. The project came about after Mayor of London Boris Johnson and Olympics Minister Tessa Jowell decided in 2008 that the Olympic Park needed "something extra". Designers were asked for ideas for an "Olympic tower" at least 100 metres (330 ft) high, and Orbit was the unanimous choice from proposals considered by a nine-person advisory panel.

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Orbit (horse)

Orbit (foaled 1885) was a Thoroughbred racehorse. He was trained at Kingsclere by John Porter for the 1st Duke of Westminster. As a three-year-old he won the Eclipse Stakes.

Breeding

Orbit was the son of Epsom Derby and Champion Stakes winner Bend Or. His dam was Fair Alice, a daughter of July Stakes winner Cambuscan.

Racing career

Orbit won three races as a two-year-old; the Criterion Nursery Handicap at Newmarket, the Kempton Park Champion Nursery Handicap and the Daveridge Stakes. Orbit started his three-year-old career by winning the Craven Stakes at Newmarket by ¾ length from Cotillon. His next race came in the 2000 Guineas at Newmarket. Friar's Balsam started as the 1/3 favourite for the race, with Ayrshire at 100/12 and Orbit at 100/8. Orbit ran on well in the closing stages to finish in third place. Ayrshire won the race by two lengths from Johnny Morgan, who was a head in front of Orbit. After winning the 2000 Guineas win Ayrshire started as the 5/6 favourite for the Epsom Derby and Orbit was second favourite at 11/2. Orbit could only finish in fifth place, over seven lengths behind winner Ayrshire. He then finished second in the Triennial Stakes at Ascot. Orbit started as the 9/4 favourite for the Eclipse Stakes and in the final 100 yards of the race Orbit gradually edged away from stablemate Ossory and beat him by a length.

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Podcasts:

Orbit

ALBUMS

Orbit

ALBUMS

XLr8r

Released 2001

Libido Speedway

Released 1997

Tonedeaf

William Orbit

ALBUMS

Strange Cargo 5

Released 2014

Odyssey

Released 2010

Pieces in a Modern Style 2

Released 2010

My Oracle Lives Uptown

Released 2009

Hello Waveforms

Released 2006

Promotional

Released 2002

The Best of Strange Cargos

Released 1996

Pieces in a Modern Style

Released 1995

Strange Cargo III

Released 1993

Strange Cargo 2

Released 1990

Orbit

Released 1987

Strange Cargo

Released 1987

Orbit

ALBUMS

CMJ New Music Monthly, Volume 45: May 1997

Released 1997

Absolutely... The Very Best of Electro

Released 1997

The Beat Goes On

Released 1982

Orbit

ALBUMS

Mon Shudhu Mon Chuachey - Remixed

Email this Page Play all in Full Screen Show More Related Videos
PLAYLIST TIME:

Orbit

by: Sara Sadler

As I watch the day
I am so amazed by what you do
When I close my eyes
I am mesmerized by thoughts of you
Sometimes I can disappear
I let your love surround me
Little things that I hold dear
Are flowing down around me
Chorus:
Even now I know
This orbit that I'm in
It's spinning me to you
I am silenced by the will of my intent
To only be with you
Completely lost in you
Every dream I hide
Give them wings so they can fly to you
As I wait to find
All I have in mind for me to be
My renditions fade away
I offer no resistance
Take me up into your space
Into your existence
Ooh...
[Repeat Chorus]
It is clear to me
I'm nowhere to be without you
It's true
You're my gravity
And I can never doubt you
I'm lost in you




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... orbit for German-based OroraTech.
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ESA’s Gaia spacecraft leaves for retirement orbit

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From 25 July 2014 to 15 January 2025, the Gaia space observatory performed high-precision measurements of nearly two billion stars from its Lissajous orbit around the L2 Lagrange point, 1.5 million km from Earth.
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After more than a decade mapping out our home galaxy, the Gaia space telescope was powered down and sent into "retirement orbit" around the Sun on Thursday, the European Space Agency said ... .
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Interesting Engineering 27 Mar 2025
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... opportunity to launch the first commercial orbital launch vehicle from mainland Europe.

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