The planet Neptune

Image of Neptune
© NASA/Voyager 2
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From Fairfield , Neptune is visible in the dawn sky, rising at 01:49 (EDT) – 3 hours and 35 minutes before the Sun – and reaching an altitude of 22° above the south-eastern horizon before fading from view as dawn breaks around 04:00.

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Name Neptune
Object Type Superior Planet
Current Position
Magnitude:7.90 (V) [1]
Absolute mag (H):-6.87 [1]
Slope parameter (n):2.00 [1]
Right ascension:23h27m [2]
Declination:-04°42' [2]
Distance:30.06 AU
249.97 lightmin [2]
Orbital Elements [2]
Semi-major axis:30.07 AU
Longitude ascending node:131.72°
Argument of perihelion:-86.75°
Epoch of elements:01 January 2000
Mean Anomaly at epoch:259.91°
Derived quantities
Perihelion:29.81 AU
Aphelion:30.33 AU
Orbital period:164.88 years
[1] Robin M. Green, Spherical Astronomy, 1985, ISBN 0-521-31779-7
[2] Explanatory Supplement to the Astronomical Almanac. 1992. K. P. Seidelmann, Ed., p.316
11 Sep 2020  –  Neptune at opposition
10 Mar 2021  –  Neptune at solar conjunction
14 Sep 2021  –  Neptune at opposition
13 Mar 2022  –  Neptune at solar conjunction
16 Sep 2022  –  Neptune at opposition
15 Mar 2023  –  Neptune at solar conjunction
19 Sep 2023  –  Neptune at opposition
17 Mar 2024  –  Neptune at solar conjunction
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