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Planet Orbiting a Star

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Summary of Current Information
A. The Parent Star
B. The Exoplanet

II. Is This Planet Potentially Habitable?

Before taking a look at some of the physical characteristics of our exoplanet, let's see where it would be graphed on a plot of potentially habitable planets as introduced by Kasting, Whitmire and Reynolds [ICARUS, 101, 108-128 (1993).]

Plot of mass of star vs. distance of exoplanet from star showing habitable zone.
Caption: The mass of the star in solar masses is plotted against the distance the exoplanet is from the star. Note that the radii of stars of different spectral types are also indicated by the corresponding letters (O, B, A, F, G, K, M). These letters show the location of the zero subdivision of each spectral type, thus F5, for example, is between F0 and G0 (and not between A0 and F0). The approximate size and position of the planets of our solar system are shown along the horizontal line corresponding to a star with one solar mass (the Sun) and are labeled by the first letter of their names. [Source: David Koch; redrawn from Kasting, et al (1993).]

Plotting the Exoplanet

Locate where this exoplanet would appear on this graph. (Click on graph to view a larger version that can be printed. Then place an "x" where the present exoplanet should be plotted.) Note that both the horizontal and vertical axes are logarithmic. For example, the tick marks along the vertical axis go in this order: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7. 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20 and 30.

Where is the present exoplanet located?

The exoplanet is definitely in the habitable zone on the graph.
The exoplanet is definitely not in of the babitable zone onthe graph.
The exoplanet is near the border between the habitable zone and the non-habitable region.

Press the "Next Page" button to continue your analysis.


Notes on Habitable Planets

Hints (Reminders)

More Info

Simulation Authors: Richard L. Bowman (Bridgewater College) and David Koch (Kepler Mission)

Maintained by: Richard L. Bowman rbowman@bridgewater.edu (2002-04; last updated: 19-Apr-04)