Information Center

• Who discovered the Neptune and when?        23rd Sept. 1845, by Le Verrier (France) and Adams (England).
• What is the distance of the Neptune from the Sun?        4496.5 million km.
• Time taken by the Neptune for one revolution around the Sun:        164.79 years.
• What is the time taken by Neptune for one rotation on its axis?        15 hours 48 minutes.
• What is the speed of revolution of the Neptune?        5 km/minute.
• What is the diameter of the Neptune?        49500 km.
• What is the mass of the Neptune?        17.2 times more than that of the Earth.
• How many satellites does the Neptune have?        Four (4).
• Mention two satellites of the Neptune:        Triton, Neried (The other are found recently).
• What is the temperature of the Neptune?        33 degree F.
• Who discovered the satellite Triton?        William Lassel (1846)
• What is the distance between the Neptune and Triton?        351000 km.
• What is the diameter of Triton?        3700 km.
• In what time does Triton revolve round the Neptune?        6 days.
• Who discovered satellite Neried?        Gerald Kapir.
• What is the diameter of Neried?        320 km.
• Time taken by Neried for one revolution around the Neptune:        359 days. 

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