Mass vs eccentricity

Orbital elements are taken from:

Discovery of Extrasolar planets
Geneva Extrasolar Planet Search

The primary reference for this data is Geoff Marcy's compilation, cut (arbitrarily) at m sin(i) = 10 Jupiter masses. The K = 20 m/s line indicating the approximate sensitivity of the search is taken from The Lick Planet Search: Detectability and mass thresholds, by Andrew Cumming, Geoff Marcy, and Paul Butler (1999, ApJ, 526, 890) - there are now a substantial number of planets detected with smaller radial velocity amplitudes.

Distribution of extrasolar planets

Several recent papers discuss the statistical properties and / or possible origin of the observed distribution of exoplanet orbits. Our own version is, Predictions for the frequency and orbital radii of massive extrasolar planets, MNRAS, 334, 248 (2002). This work has been recently updated, Massive planet migration: Theoretical predictions and comparison with observations, ApJ, in press (2007).

Updated 14th June 2007. N=198
Updated 1st September 2006. N=166 (updated orbital parameters from Butler et al. 2006)
Updated 1st December 2005. N=163
Updated 22nd June 2005. N=144
Updated 28th September 2004 (added new low mass planets + transit detections). N = 116
Updated 8th October 2003 (matches current exoplanets list). N=104
Updated 9th November 2002 (matches current exoplanets list). N=91
Updated 27th June 2002 (matches current exoplanets list). N=84
Updated 22nd April 2002 (matches current exoplanets.org list). N=72
Updated 25th October 2001 (7 new planets). N=71
Updated 11th September 2001 (new 47 Uma planet). N=64
Updated 8th April 2001 (new Geneva group planets). N=63
Updated 7th February 2001. N=52
Updated 17th December 2000 (update with exoplanets.org list). N=51
Updated 14th August 2000 (added IAU announcements). N=48
Updated 10th May 2000 (new Geneva group planets). N=40