What is the distance between the Sun and the planet Mercury?

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RPF SI (2018) Official Paper (Held On: 24 Dec, 2018 Shift 1)
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  1. 57.91 million km
  2. 62.91 million km
  3. 54.91 million km
  4. 51.91 million km

Answer (Detailed Solution Below)

Option 1 : 57.91 million km
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The correct answer is 57.91 million km

Key Points

  • The average distance between the Sun and Mercury is 57.91 million km.
  • Mercury is the closest planet to the Sun in the Solar System.
  • This distance can vary slightly due to Mercury's elliptical orbit around the Sun.
  • The average distance is referred to as the semi-major axis in orbital mechanics.
  • Mercury takes about 88 Earth days to complete one orbit around the Sun.

Additional Information

  • Mercury is named after the Roman messenger god due to its swift orbit around the Sun.
  • It has a very thin atmosphere, composed mainly of oxygen, sodium, hydrogen, helium, and potassium.
  • Mercury has no moons or rings.
  • The planet's surface temperature can vary drastically, from extremely hot (up to 430°C) to extremely cold (down to -180°C).
  • Mercury's high density suggests it has a large metallic core, which generates a magnetic field about 1% as strong as Earth's.

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