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Artemis Corona

The largest corona on Venus: a vast, roughly circular structure with a deep trough curving around it, and possibly the largest circular structure in the solar system. It is wider than the largest region OrbitStudio frames, so a model takes in its raised middle and the trough around it.

DiameterAbout 2,600 km; NASA's Magellan caption gives 2,100 km
Its troughArtemis Chasma, 25 to 200 km wide and 1 to 2 km deep
Coordinates35.0° S, 135.0° E
TypeCorona
Named afterIts trough, Artemis Chasma, which is named after the Greek goddess of the hunt and the Moon; adopted by the IAU in 1994
Elevation sourceNASA Magellan's radar altimetry, gridded at about 4.6 km per pixel

Diameter and name from the IAU Gazetteer of Planetary Nomenclature, and the chasma's from its own record; the naming theme and the word for a corona from the IAU's categories for Venus and descriptor terms; the 2,100 km, the largest corona and what coronae are thought to be from NASA's Magellan image release; the trough and the largest circular structure from the USGS geologic map of the Artemis Chasma quadrangle (Bannister and Hansen, 2010); the subduction from Davaille, Smrekar and Tomlinson (2017). Coordinates are the center point OrbitStudio uses for this destination.

Where is Artemis Corona on Venus?

Artemis is centered at 35.0° south, 135.0° east, in Venus's southern hemisphere. The gazetteer, which counts Venus's longitudes eastward from 0° to 360°, gives the same 135.0° east, though only to the whole degree. Venus's coronae are named after fertility and earth goddesses, but this one took its name in 1994 from the trough around it, Artemis Chasma, which the International Astronomical Union had named in 1982 after the Greek goddess of the hunt and the Moon.

What is a corona on Venus?

A large, roughly circular structure: the International Astronomical Union describes one simply as an ovoid-shaped feature. Most coronae are thought to be related to upwelling of hot material from the interior of Venus, and NASA calls Artemis the largest identified. The USGS's geologic map puts it at about 2,600 kilometers across and notes that it may be the largest circular structure in the solar system. Its trough, Artemis Chasma, is 25 to 200 kilometers wide and 1 to 2 kilometers deep. Davaille, Smrekar and Tomlinson (2017) count Artemis, with Quetzalpetlatl Corona, among the proposed sites where a rising plume may have set off subduction along a semi-circular trench.

What does Artemis look like as a 3D print?

A raised interior inside a curving trench, and a low print. Framed as widely as the generator allows, so that about 2,100 kilometers of ground fill a model 200 millimeters across, the roughly 6 kilometers of relief in that view come out at about 0.6 millimeters at true scale and 2.4 millimeters at the 4x Venus models start at; 6x to 8x suits it. The trough, 1 to 2 kilometers deep, is a groove under a millimeter deep at 4x.

In Magellan's elevation data the trough falls inside that frame, a groove curving most of the way around the middle of the model. At this framing an altimeter footprint, about 10 to 30 kilometers across, is only 1 to 3 millimeters of the model, so what the data holds comes through sharper than on the smaller Venus regions. The narrow fractures on the rise outside the trough, which stand out in the radar images and average about a kilometer wide, are far below what the elevation data holds.

Print Artemis Corona in OrbitStudio Watch how it works · 1:12

What is OrbitStudio?

OrbitStudio turns real elevation data into 3D-printable models. You pick a region of Venus on a globe or a flat map, choose a jigsaw puzzle or a solid ornament, and get ready-to-print files with terrain and borders already separated and colored. No CAD, no mesh repair. The heights come from NASA Magellan's radar altimetry, gridded at about 4.6 kilometers per pixel.

Trying it is free and needs no account: pick a region, generate it and turn it around in 3D. Downloading the model — STL files and pre-colored 3MF files for Bambu Studio or OrcaSlicer — takes a Plus or Merchant plan, or one credit from a pass. The generator covers the Moon, Mars and Mercury too.

Other landmarks

Maxwell Montes Maat Mons Mead Crater All Venus landmarks

The night sky, too

OrbitStudio Sky, the night-sky tool, turns the sky over any place, on any date from 1900 to 2100, into a 3D-printable star map. Its STL is free.