Following the introduction of the topic "Cleaning up Excel's poshlust", I thought you might be interested in the dot-dash plot of extrasolar planets I made in the last month based on the list at
exoplanet.eu. It is, of course, inspired by the dot-dash plots in The Visual Display of Quantitative Information. I constructed it in part as an exercise in pushing the limits of Excel's ability to mimic a more powerful graphing package. It's a 1770 wide by 2656 high GIF, but only 61K file size because of all the repetitious elements.
There are now around 200 planets discovered, many more than were known in 2002. The technical challenges involved in making such sensitive doppler measurements, when the star itself is spinning and boiling at hundreds or thousands of metres per second, are formidable.
Some things to note on the chart:
K is the conventional symbol for the doppler velocity which the detection technique is capable of measuring, that makes these discoveries possible. More recent discoveries in 2005/6 at K < 9m/s were only short period orbits. Larger period orbit detections in the 4-9m/s velocity range are to come as time goes on. The latest update shows planets now detected at K less than 4m/s!
Jupiter was within detection range at K=4m/s, but not Saturn, But
from the latest detections it looks like Saturn is now detectable. Uranus mass planets have been detected, but not at Uranus distance.
Most planet orbits are highly eccentric, but planetary orbits are more circular if they orbit within 0.1 AU of the star.
The medians are 1.5Mjup and 0.78AU. 25% of the planets are greater than 1.76 AU, and 25% are less than 0.62 Mjup. So far only one planet is both, so just under 50% are neither.
The furthest planet is 7.73AU, between Jupiter and Saturn. The smallest planet is 0.02Mjup. The planet closest to its star (0.02 AU) is also the planet with the highest M sin i (18.40 Mjup)!
-- Derek Cotter (email)