# equatorial diameter

## Greek translation: ισημερινή διάμετρος

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
 English term or phrase: equatorial diameter Greek translation: ισημερινή διάμετρος Entered by:

 16:44 Sep 3, 2006
English to Greek translations [PRO]
Astronomy & Space /
 English term or phrase: equatorial diameter Taking the Sun’s diameter as 0.0093 AU gives the probability of a transit from an Earth-like planet as 0.47 per cent and the probability of detecting a Venus as 0.65 per cent. The greater probability for the Venus detection is because it orbits at a closer distance than the Earth, and so the range of angles over which a transit can be observed is greater. As the inclination of the system approaches the limits of the angle range, the transits cross smaller and smaller portions of the stellar surface. These grazing incidence transits would be difficult to detect, and so any transit which crosses less than half the equatorial distance of the star will be almost impossible to detect with certainty. A chord across the stellar surface that is equal to half the star’s equatorial diameter occurs at 86 per cent of the distance from the equator to the pole. So the probability of detecting a usable transit from an Earth-like world is reduced from 0.47 to 0.47 x 0.86 = 0.4 per cent.
 Assimina VavoulaGreece Local time: 00:41
 ισημερινή διάμετρος
Selected response from:

Nick Lingris
United Kingdom
Local time: 22:41
 Ευχαριστώ και πάλι...4 KudoZ points were awarded for this answer

4 +2ισημερινή διάμετρος
 Nick Lingris

1 hr   confidence: peer agreement (net): +2
ισημερινή διάμετρος

Explanation:

 Nick LingrisUnited KingdomLocal time: 22:41Works in fieldNative speaker of: GreekPRO pts in category: 57
 Ευχαριστώ και πάλι...

agree
 11 hrs
-> Ditto.

agree
 17 hrs
-> Ditto.

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