The planet Neptune

Image of Neptune
© NASA/Voyager 2
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From Cambridge , Neptune is visible in the evening sky, becoming accessible around 19:11 (EDT) as the dusk sky fades, 24° above your south-eastern horizon. It will then reach its highest point in the sky at 22:21, 41° above your southern horizon. It will continue to be observable until around 01:54, when it sinks below 21° above your south-western horizon.

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Name Neptune
Object Type Superior Planet
Current Position
Magnitude:7.83 (V) [1]
Absolute mag (H):-6.87 [1]
Slope parameter (n):2.00 [1]
Right ascension:23h10m [1]
Declination:-06°25' [1]
Distance:29.10 AU
242.03 lightmin [1]
Orbital Elements [1]
Semi-major axis:30.27 AU
Longitude ascending node:131.80°
Argument of perihelion:225.27°
Epoch of elements:15 January 1985
Mean Anomaly at epoch:-84.81°
Derived quantities
Perihelion:30.07 AU
Aphelion:30.48 AU
Orbital period:166.58 years
[1] Robin M. Green, Spherical Astronomy, 1985, ISBN 0-521-31779-7
27 Jan 2020  –  Close approach of Venus and Neptune
11 Sep 2020  –  Neptune at opposition
14 Sep 2021  –  Neptune at opposition
27 Apr 2022  –  Close approach of Venus and Neptune
16 Sep 2022  –  Neptune at opposition
19 Sep 2023  –  Neptune at opposition
29 Apr 2024  –  Close approach of Mars and Neptune
04 May 2024  –  Close approach of the Moon and Neptune
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