 Crater Koga based onTHEMIS day-time image | |
| Planet | Mars |
|---|---|
| Coordinates | 29°18′S103°48′W / 29.3°S 103.8°W /-29.3; -103.8 |
| Quadrangle | Phoenicis Lacus |
| Diameter | 19 km |
| Eponym | Koga, Tanzania |
Koga is animpact crater onMars, approximately 19 kilometers in diameter. It is located at 29.3°S, 103.8°W, north of the craterVirrat and northeast of the craterDinorwic. To the north is the craterNhill. It is named after a town inTanzania, and its name was approved by theInternational Astronomical Union in 1991.[1][2] According to a surface age map of Mars based onUS Geological Survey data, the area around Koga is from theNoachian epoch, which places the area's age at 3.8 to 3.5 billion years ago.[3] Sharp blocks and cliffs poke through a mantle of fine material located at the bottom of the crater.[4] At the deepest part of the crater, it is about 5,200 meters in elevation above zero altitude, and its rim averages about 6,400 meters above zero altitude. It is therefore approximately 1.2 kilometers deep.[2]
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