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The average distance between Neptune and the Sun is 4.5 billion km (about 30.1 astronomical units (AU), the mean distance from the Earth to the Sun), and it completes an orbit on average every 164.79 years, subject to a variability of around ±0.1 years. The perihelion distance is 29.81 AU, and the aphelion distance is 30.33 AU.
Neptune All Night was a 9-hour TV program providing live coverage of the Voyager 2 space probe's flyby of the planet Neptune.The show, produced by the Philadelphia-area PBS affiliate WHYY-TV, was broadcast between midnight and 9:00 AM EDT on August 25, 1989, as Voyager 2 passed within 4,950 kilometres (3,080 mi) of the planet Neptune and within 40,000 kilometres (25,000 mi) of Neptune's ...
S/2021 N 1 is the smallest, faintest, and most distant natural satellite of Neptune known, with a diameter of around 16–25 km (10–16 mi). It was discovered on 7 September 2021 by Scott S. Sheppard, David J. Tholen, Chad Trujillo, and Patryk S. Lykawka using the 8.2-meter Subaru Telescope at Mauna Kea, Hawaii, and later announced on 23 February 2024. [1]
Real-time distance and velocity data are provided by NASA and JPL. [4] At a distance of 167.34 AU (25.0 billion km; 15.6 billion mi) from Earth as of February 2025, [4] it is the most distant human-made object from Earth. [5] The probe made flybys of Jupiter, Saturn, and Saturn's largest moon, Titan.
The Great Dark Spot was captured by NASA's Voyager 2 space probe in Neptune's southern hemisphere. The dark, elliptically shaped spot (with initial dimensions of 13,000 × 6,600 km, or 8,100 × 4,100 mi), was about the same size as Earth, and was similar in general appearance to Jupiter's Great Red Spot.
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Real-time distance and velocity data is provided [26] by NASA and JPL. At a distance of 152.2 AU (22.8 billion km; 14.1 billion mi) from Earth as of January 12, 2020, [27] it is the most distant human-made object from Earth. [28] Voyager 2. Voyager 2 was launched by NASA on August 20, 1977, to study the outer planets.
Confirmed exoplanets [3]; Host star system Companion exoplanet (in order from star) Notes and additional planetary observations Name Distance ()Apparent magnitude (V) Mass (M ☉) ...