The planet Neptune

Image of Neptune
© NASA/Voyager 2
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From Washington , Neptune is visible in the evening sky, becoming accessible around 19:44 (MDT) as the dusk sky fades, 33° above your south-eastern horizon. It will then reach its highest point in the sky at 22:25, 47° above your southern horizon. It will continue to be observable until around 02:16, when it sinks below 21° above your south-western horizon.

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Name Neptune
Object Type Superior Planet
Current Position
Constellation:Aquarius
Magnitude:7.84 (V) [1]
Absolute mag (H):-6.87 [1]
Slope parameter (n):2.00 [1]
Right ascension:23h18m [2]
Declination:-05°42' [2]
Distance:29.24 AU
243.15 lightmin [2]
Orbital Elements [2]
Semi-major axis:30.07 AU
Eccentricity:0.008586
Inclination:1.77°
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
Sources
[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
Visibility from Washington

All times shown in Washington local time.

Events
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
01 Sep 2023  –  Lunar occultation of Neptune
19 Sep 2023  –  Neptune at opposition
19 Dec 2023  –  Lunar occultation of Neptune
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Washington

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37.13°N
113.51°W
MDT

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