Talk:Epsilon Reticuli b
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This is hilarious[edit]
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)
- 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)
Some non-original-research using known values and basic algebra:[edit]
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)
Basic Insolation Figures Chart[edit]
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)