Uncertainty of planetary orbital period

[Jack21222]

I've been searching all over the place, and I cannot find any data showing the error bars of orbital periods of planets. Once source estimates the uncertainty of Jupiter to be "1 arcsec per 250 years" but I cannot find anything to back this up.

Does anybody have any hints as to where I should be looking?

 

[43arcsec]

Jack, this is a great question, I have been wondering exactly the same thing. I see no one here replied, but did you find this data somewhere else?

 

[lpetrich]

The best place to look would be in journal papers describing the most precise planetary-ephemeris efforts. The two that I know of are JPL's DE series of Ephemerides and IMCCE's INPOP ones. You may be able to find papers on them in some abstract service or article-hosting service like Google Scholar or Welcome to HighWire | HighWire or arXiv.org e-Print archive.