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Equilibrium Temperature

(Teq, Teq, Planetary Equilibrium Temperature)
(temperature a planet would have if it were an externally-heated black body)

A planet's Equilibrium Temperature (Teq or Planetary Equilibrium Temperature) is the Temperature it would have given its incoming Electromagnetic Radiation (i.e., from its host star) if it were a simple Black Body, thus not subject to Atmospheric Windows, internal heat sources, etc.

Sometimes the term is used taking Albedo into account as well, and perhaps sometimes including other factors. Some cited equivalent temperatures (sources vary):

PlanetTeqSurface Temperature
Mercury449K440K
Venus328K730KDue to Greenhouse Effect
Earth279K287KGreenhouse
Mars226K218K
Jupiter122K120K
Saturn90K88K
Uranus64K59K
Neptune51K48K
Pluto44K37K
55 Cancri e1958K1613K-2709KDay/Night
GJ 1132 b600K
GJ 1214 b555K
Proxima B235K
WASP-67b1050K
(EMR,physics,measure,temperature,exoplanets)
http://en.wikipedia.org/wiki/Planetary_equilibrium_temperature

Referenced by:
Greenhouse Effect
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