Figure: Masses and Orbital Distances of All Known Exoplanets within 200 parsecs

This figure reports the orbital semimajor axis and masses of the 178 exoplanets known at the end of 2006.
Click here for an up-to-date catalog of nearby exoplanets.

For more information about exoplanets, e.g., about their diversity and about the planet detection technique, see here.

Notes to the figure:

• One Astronomical Unit (A.U.) equals the distance between the Earth and our Sun.
• Note the 20 Multiple-Planet Systems: GJ 876, 55 Cancri, HD 37124, HD 12661, 47 Ursae Majoris, HD 168443, HD 82943, HD168443, HD74156, HD 160691, 217107, HD 190360, HD 38529, HD 73526, HD 202206, HD 108874, HD 128311, HD 69830, HIP 14810, HD 187123, and Upsilon Andromedae. Upsilon Andromedae is the first known multiple-planet system, announced April 15, 1999.
• Masses are measured in jupiters. One Jupiter mass (1 MJ) equals 318 Earths.

Credit: California & Carnegie Extrasolar Planet Search, http://exoplanets.org/.

Original figure at: http://exoplanets.org/massradiiframe.html