Talk:Epsilon Reticuli b

Latest comment: 16 years ago by Zimriel

This is hilarious

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I'll add insolation calculations and the comparison chart when I have more time, but this planet is no where near Earth in insolation... GabrielVelasquez (talk) 10:04, 13 January 2008 (UTC)Reply

Yeah, seeing that it was basically Earth's orbit around a frickin' SUBGIANT made me wonder, too. I wonder if one of the astronomers who found it was first to make the determination that /epsilon Reticuli had Sol's habitable zone and, if so, which formula he used. At any rate this planet is cited alongside genuine "water cloud jovians" to this day. --Zimriel (talk) 02:17, 22 August 2008 (UTC)Reply

Some non-original-research using known values and basic algebra:

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I disagree that the figure for the Earth's Solar constant at Solar Constant are accurate,
I've read various different quotations of the value in texts and on the net. A little accuracy wouldn't hurt:
R= 6.955e8 m (Sun's radius)
T= 5778 °K (Sun's photosphere or Effective temperature)
a= 5.67051e-8 (Stefan-Boltzmann Constant)
d= 149597876600 meters (Earth's average distance, Mariner 10), 1 AU
f= flux or Insolation.
L= 4pi·R2aT4 = 4pi·d2f
Therefore, f=(R2aT4) / d2
Then ((6.955e8 m)2 (5.67051e-8) (5778°K)4) / (149597876600)2 = 1366.079 W/m2
(Which is only off by 0.1333% the so called satellite measured solar constant.)
This is the average. If you factor in the Earths's eccentricity (0.016710219), then the range is 1321.5430 W/m2 to 1412.9039 W/m2

GabrielVelasquez (talk) 10:04, 13 January 2008 (UTC)Reply

Basic Insolation Figures Chart

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Planet Distance Insolation (W/m2) % of Earth's.
Mars' Aphelion Flux 493.335 36.11%
Mars' Average Flux 588.947 43.11%
Mars' Perihelion Flux 717.577 52.53%
Earth's Aphelion Flux 1,323.444 96.88%
Earth's Average Flux 1,366.079 100.00%
Earth's Perihelion Flux 1,414.936 103.58%
Venus' Aphelion Flux 2,581.885 189.00%
Venus' Average Flux 2,613.359 191.30%
Venus' Perihelion Flux 2,653.077 194.21%
Epsilon Reticuli b Aphelion Flux 17,059.045 1248.76%
Epsilon Reticuli b Average Flux 19,502.849 1427.65%
Epsilon Reticuli b Perihelion Flux 22,581.687 1653.03%

GabrielVelasquez (talk) 10:12, 13 January 2008 (UTC)Reply

I like this chart. I'm certainly going to steal that and throw it into Talk pages here and there. I'm not quite brave enough to face down the deletionists on main pages, but given time... -- Zimriel (talk) 02:10, 22 August 2008 (UTC)Reply