Talk:CoRoT-7b

A news item involving CoRoT-7b was featured on Wikipedia's Main Page in the In the news section on 4 February 2009.

Wikipedia

Measured?[edit]

The article needs to indicate how the diameter was measured/estimated. --- RockMFR 23:04, 4 February 2009 (UTC)[reply]

Mass, density?[edit]

Is there any information about a mass of this object, which would allow to calculate the density of that body? That's important because it gives us some information about composition and nature of this planet( what it consists of). Amakthea computer (talk) —Preceding undated comment was added at 12:36, 13 February 2009 (UTC).[reply]

Actually diameter of the planet wouldn't be more than 1.4 that of the Earth,

Earth - 12.756km Corot 7B - 18000km *(max)

Unless it is a gaseous planet,

2 Masses of earth - 1.2 diameter of earth
3 Masses of earth - 1.28 diameter of earth
4 Masses of earth - 1.4 diameter of earth
5 Masses of earth - 1.5 diameter of earth (depending on internal composition)
7 Masses of earth - 1.6 diameter of earth
8 Masses of earth - 1.7 diameter of earth
10 Masses of earth - 1.8 diameter of earth
12 Masses of earth - 2.0 diameter of earth (absolute max)

Gas Giants start to form around 12.5 masses of earth or diameter of 3.0 earths.

Uranus having 14.5 masses of earth is a fine example. —Preceding unsigned comment added by 188.220.53.72 (talk) 04:41, 16 December 2009 (UTC)[reply]

Chthonian planet?[edit]

Perhaps this planet is the first case of a "Chthonian" planet detection. See http://en.wikipedia.org/wiki/Chthonian_planet —Preceding unsigned comment added by Maaf (talk • contribs) 03:56, 12 June 2009 (UTC)[reply]

'Official Website'[edit]

I think this should be removed, as it's about 'UFO News'. Hawkania (talk) 19:42, 26 November 2009 (UTC)[reply]

Done. Thanks for noticing! --Cyclopia ^talk 21:14, 26 November 2009 (UTC)[reply]

Density confusion?[edit]

I just changed the density figures to be 5600 +/- 1300 as the previous numbers were 5.6 +/- 1.3 which would correspond to gm per cubic cm, but the info box gives the figure as kg per cubic metre. If the planet has a surface gravity of nearly 3G then there's no way its real density is only 5.6 kilograms per cubic metre.

152.78.64.180 (talk) 17:14, 21 December 2009 (UTC)[reply]

Shortest orbit?[edit]

The page for SWEEPS-10 says that it has an orbit of 10 hours. The reference for the claim here is behind a Nature paywall so I can't confirm if the claim is restricted or just wrong. BillMcGonigle (talk) 02:42, 15 March 2010 (UTC)[reply]

Yes, ~0.424 days or just over 10 hours. — Aldaron • T/C 03:45, 15 March 2010 (UTC)[reply]

Smallest planet?[edit]

The article claims that COROT-7b was the smallest known extrasolar planet until the discovery of Kepler-10b in 2011, but there is no mention of that in Kepler's article. This is unreferenced. Furthermore, other discovered planets like PSR B1257+12 A (discovered in 2005) are claimed to be of sizes much smaller than Earth--one-fifth the size of Pluto as claimed in this reference. Can anyone shed light on these discrepancies? Possibly something to do with the definition of a planet? Zujua (talk) 01:11, 21 July 2012 (UTC)[reply]

In 2009, COROT-7b was the smallest commonly recognized exo-planet since some astronomers did not treat pulsar planet PSR B1257+12 A as a real planet. Just good old semantics. -- Kheider (talk) 10:46, 21 July 2012 (UTC)[reply]

rotation period?[edit]

What is the rotation period, this only has the orbital period? — Preceding unsigned comment added by 174.101.166.131 (talk) 20:58, 18 March 2013 (UTC)[reply]

Same as its orbital period since the planet is tidally locked. Planet Star 22:34, 19 March 2013 (UTC)[reply]

External links modified[edit]

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Temperature discrepancy[edit]

Summary inset in the beginning gives

> Temperature 1300–1800 K[2]

while article text says

> a maximum surface temperature between 1800 and 2600 °C

which is ~2100..2900 K

176.52.32.196 (talk) 22:21, 31 August 2019 (UTC)[reply]

Thanks for noticing this. I've removed the article text because cited ref doesn't mention planet temperature. Fdfexoex (talk) 07:30, 8 September 2019 (UTC)[reply]