Planit

Mercury

The smallest planet and the closest to the Sun, with the most eccentric planetary orbit.

NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

The smallest planet, where one day from sunrise to sunrise lasts two whole Mercury years.

Mercury's grey, cratered horizon. — Mercury's cratered limb, seen by NASA's MESSENGER spacecraft. Credit: NASA

Mercury is a rocky world only slightly larger than our Moon. It has almost no atmosphere, so its surface swings between about 430 °C by day and −180 °C at night.

It spins exactly three times for every two orbits around the Sun, so one solar day (sunrise to sunrise) lasts two Mercury years. Its large iron core makes it the second densest planet after Earth.

Ngrembag ing orrery

Sumber data

Fakta
Diameter	4.879 km	[1]
Massa	3,301 × 10²³ kg	[1]
Kacepetan	5,429 g/cm³	[1]
Gravitasi permukaan	3,7 m/s²	Dijupuk saka dataset
Kecepatan Escape	4,25 km/s	Dijupuk saka dataset
Putaran (sidereal)	58,6 dina	[1]
Jarak	176 dina	[2]
Periode orbit	88 dina	[3]
Aksial	0,034°	[2]
Suhu rata-rata	167°C	[2]
Bulan	0	[2]
Jarak rata- rata saka srengéngé (sumbu semi- utama)	0,3871 au	[3]

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