Mercury has a diameter of 4,878 km, which makes it the smallest planet in our Solar System. Since it rotates very quickly, completing a full rotation in just 10 hours, it is an oblate spheroid and bulges at the equator. So, it would take 1.45 of our moons to equal the diameter of Mercury. Mercury as seen by the Messenger probe, Jan. 14, 2008. Rate! JeanaShupp +3 grendeldekt and 3 others learned from this answer Answer: 24.49. Elliptical Orbit Unlike Earth, which circles the … The slow spin keeps the planet's radius at the poles and the equator equal. Any crater larger than 250 kilometres in diameter is referred to as a Basin. Thanks Comments (2) Report 2.4 24 240 2400 pick one^^^ Log in to add a comment Answer Expert Verified 5.0 /5 2. Mercury Observational Parameters Discoverer: Unknown Discovery Date: Prehistoric Distance from Earth Minimum (10 6 km) 77.3 Maximum (10 6 km) 221.9 Apparent diameter from … Mercury's orbit is elliptical, though, and its distance from the sun varies by 24 million kilometers (15 million miles). The diameters of Jupiter and Saturn are wider across the equator (the values given in the table) than they are from their North to their South Poles. Actual Distance - 57,900,000 km. In other words, one year on Mercury lasts 88 Earth days. Mercury completes one orbit around the sun every 88 Earth days. Most Mercurian craters are named after famous writers, artists and composers. Planet: Diameter (km) Size relative to Earth: Mercury: 4879.4 38% the size of Earth: Mars: 6779 53% the size of Earth: Venus: 12104 95% the size of Earth This image shows half of the hemisphere missed by Mariner 10 in 1974–75 and was snapped by Messenger's Wide Angle Camera when it was about 27,000 km (17,000 miles) from the planet.

This works out to Mars having a mean diameter of 6779 km (4212.275 mi), varying between 6752.4 km (4195.75 mi) between its poles and 6792.4 km (4220.6 mi) at its equator. Scaled Diameter - 0.003 cm. Mercury orbits once every 87.97 Earth days, so it rotates only three times every two Mercury years. The diameter of Jupiter at its equator is 142,984 km. The Caloris Basin is the largest impact crater on Mercury covering approximately 1,550 km in diameter and was discovered in 1974 by the Mariner 10 probe. MERCURY Actual Diameter - 4878 km. NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington The gargantuan 120,034-km diameter of Saturn is 24 times the diameter of the tiny 4,880 km diameter of Mercury, so it would take 24 mercurys to equal the diameter of Saturn. This is because of … Difference between the two diameters = 115100 km 1.4 18 votes 18 votes Rate! Scaled Distance - 0.30 m. We need you to answer this question! Mercury orbits, or travels around, the sun very quickly. For a comparison, the diameter of the Moon is 3,473 km. The moon is actually smaller than mercury, having a diameter of 3,476 km and mercury has a diameter of 4,880 km.

It orbits at an average rate of about 30 miles (48 kilometers) per second.