 The crater Virrat and its surroundings, in a screenshot inNASA World Wind | |
| Planet | Mars |
|---|---|
| Coordinates | 30°44′S257°07′E / 30.73°S 257.12°E /-30.73; 257.12 |
| Quadrangle | Thaumasia |
| Diameter | 50.67 km (31.48 mi) |
| Depth | 1.3 km (0.81 mi) |
| Eponym | Virrat, Finland |
Virrat is animpact crater onMars, southwest of the craterDinorwic and northeast ofClantas Fossae. To the north are the cratersKoga andNhill. The name was approved in 1991 by theInternational Astronomical Union, afterVirrat, a town inFinland.[1][2] According to a surface age map of Mars based onUS Geological Survey data, the area around Virrat is from theNoachian epoch, which places the area's age at 3.8 to 3.5 billion years ago.[3] At the highest point on its rim, it is about 6,400 metres (21,000 ft) above zero altitude, and it is about 5,100 metres (16,700 ft) at the crater bottom, giving it a depth of 1.3 kilometres (0.81 mi).[2]
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