Lat: 25.9°S, Long: 58.9°E, Length: 80 km, Depth: km, Rükl 59
Left: LO-IV-184H Aerial view indicating the Roman-numeraled rilles of the System of Lunar Craters. Right: Colin Evans Earth-based view.
(IAU Directions) PETAVIUS.--The third member of the great meridional chain: a noble walled-plain, with a complex rampart, extending nearly 100 miles from N. to S., which encloses a very rugged convex floor, traversed by many shallow valleys, and includes a massive central mountain and one of the most remarkable clefts on the visible surface. ... There is a remarkable bifurcation of the border S. of Wrottesley. A lower section separates from the main rampart and, extending to a considerable distance S.W. of it, encloses a wide and comparatively level area which is crossed by two short clefts. ... The great cleft, extending from the central mountains to the S.W. wall, and perhaps beyond, was discovered by Schroter on September 16, 1788, and can be seen in a 2 inch achromatic. In larger instruments it is found to be in places bordered by raised banks.
The railroad at the southwestern part of the rim of Petavius
- I can't imagine it's a totally new discovery, this railroad-like feature on the southwestern part of the rim of Petavius. What is it? It seems to start just east of Wrottesley (the crater which is touching the west-northwestern part of the rim of Petavius) and it runs all the way to the southeast through the bowl-shaped crater Petavius C, and... much further across the unimpressive craters Hase and Hase D, until it meets Rimae Hase (or... are the railroad and Rimae Hase perhaps one and the same feature?). - DannyCaes Jan 7, 2016
- Named for the crater (Petavius) within which the rilles are found.
- The current status of lunar rille names in the IAU nomenclature is very unclear since the IAU never followed through on its 1973 promise to give rille systems "new and more appropriate designations." Instead, the IAU Planetary Gazetteer has so-far only lumped the old Roman-numeraled rilles together as "Rimae". In the present case, the original IAU nomenclature of Blagg and Müller (1935), had only a single rille: Elger's "great cleft", labeled "I" in the illustration above. The System of Lunar Craters added "II" and "III"; although the preparers of LAC 98 (also approved by the IAU), labeled "III", but combined "I" and "II" into a single Rima Petavius. The System of Lunar Craters also draws the rille paralleling the west rim of Petavius as a sort of huge T-shaped extension of "I", but it is not clear from the drawing if it was meant to be included in the name. - JimMosher
Trenchant Observations on a Trench. On the Limb Again. LPOD (Repeat of 3/7/2006 A Bend in the Middle Moderate Sun over a Magnificent Crater On the Limb Again A New Kind of DHC Petavius Naked Petavius: Rilles & Volcanic Spots Four in a Row Limb Gift
- A Portfolio of Lunar Drawings (Harold Hill), see: the first drawing in that book, on a number-less page.