Stilbon Planitia is a large plain on the planet

Mercury Mercury commonly refers to: * Mercury (planet), the nearest planet to the Sun * Mercury (element), a metallic chemical element with the symbol Hg * Mercury (mythology), a Roman god Mercury or The Mercury may also refer to: Companies * Merc ...

. The name Stilbon is ancient Greek word for "Mercury", and the name was approved in 2017. It was first observed in detail by

MESSENGER ''MESSENGER'' was a NASA robotic space probe that orbited the planet Mercury between 2011 and 2015, studying Mercury's chemical composition, geology, and magnetic field. The name is a backronym for "Mercury Surface, Space Environment, Geoche ...

. It lies north of the

Caloris Caloris Planitia is a planitia, plain within a large impact basin on Mercury (planet), Mercury, informally named Caloris, about in diameter. It is one of the List of largest craters in the Solar System, largest impact basins in the Solar System. ...

basin, and is approximately 1550 kilometers long. Stilbon Planitia is one of four named plains that surround the Caloris basin (with

Mearcair Planitia Mearcair Planitia is a large plain on the planet Mercury. The name Mearcair is the Irish word for "Mercury", and the name was approved in 2017. It was first observed in detail by MESSENGER. It lies between the large crater Raditladi and the an ...

Tir Planitia Tir Planitia is a large plain on the planet Mercury. The name Tir (تیر) is the Persian word for "Mercury", and the name was approved in 1976. It was first observed in detail by Mariner 10. It lies between the large crater Mozart and the anci ...

, and

Odin Planitia Odin Planitia is a large basin on Mercury located at 23.3° N, 171.6° W. It was named after the Norse god Odin in 1976 by the IAU. A large volcanic dome 7 km in diameter and 1.4 km high is situated near the center of Odin.Katterfeld, G ...

). All of these plains are classified as ''smooth'', as opposed to ''intracrater'' plains which have rougher topography. They also contain areas where kilometer-scale knobs protrude above the plains, and these areas are called the

Odin Formation The Caloris group is a set of geologic units on Mercury. McCauley and othersMcCauley, J. F., Guest, J. E., Schaber, G. G., Trask, N. J., and Greeley, Ronald, 1980, Stratigraphy of the Caloris Basin, Mercury: Icarus, 1980 have proposed the name “C ...

. The Odin Formation is interpreted as a mixture of impact melt and blocky basin ejecta, formed by the Caloris impact event.Denevi, B. W., Earnst, C. M., Prockter, L. M., and Robinson, M. S., 2018. The Geologic History of Mercury. In ''Mercury: The View After

'' edited by Sean C. Solomon, Larry R. Nittler, and Brian J. Anderson. Cambridge Planetary Science. Section 6.3.3. Oskison crater EW0229104231G

References

Plains on Mercury {{crater-stub