2021 RG19

[razvan]

razvan, your paragraph is too small to read  .

Phil S.

Odd. It's a copy/paste from the Horizons documentation and on a desktop it appears just one point smaller than the default font, but looking at the stylesheet, there is a "font-size: 1pt;" and a "font-size13px;" declaration, I guess the former took precedence on your system. Anyway, the paragraph read: "Output for asteroids and comets can include formal +/- 3-standard-deviation statistical orbit uncertainty quantities. There is a 99.7% chance the actual value is within given bounds. These statistical calculations assume observational data errors are random. If there are systematic biases (such as measurement timing, reduction, or star-catalog errors), results can be optimistic. Because the epoch covariance is mapped using linearized variational partial derivatives, results can also be optimistic for times far from the solution epoch, particularly for objects having close planetary encounters."

Other than that, it was great to hear the story with the F77 program.