My suggestion, which was not adopted, was that each planet be named for its stellar parent as usual, but then be designated by its orbital period in days, to one decimal point . The orbital periods may certainly be expected to be constrained to within a tenth of a day or so. No two planets could be confused (unless there are Trojan planets which share orbits but may be rare, and at any rate might have the additional unambiguous designations of i and ii, as needed.) Thus we would have Gliese 876-1.9, Gliese 876-30.9, and Gliese 876-60.1. Those with a...