The planet Neptune

Image of Neptune
© NASA/Voyager 2
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From Ashburn , Neptune is visible in the evening sky, becoming accessible around 17:56 (EST), 43° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 19:02, 45° above your southern horizon. It will continue to be observable until around 22:47, 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:7.87 (V) [1]
Absolute mag (H):-6.87 [1]
Slope parameter (n):2.00 [1]
Right ascension:-1h-35m [2]
Declination:-04°58' [2]
Distance:29.68 AU
246.84 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 Ashburn

All times shown in Ashburn local time.

Events
01 Dec 2021  –  Neptune ends retrograde motion
13 Mar 2022  –  Neptune at solar conjunction
28 Jun 2022  –  Neptune enters retrograde motion
16 Sep 2022  –  Neptune at opposition
03 Dec 2022  –  Neptune ends retrograde motion
15 Mar 2023  –  Neptune at solar conjunction
30 Jun 2023  –  Neptune enters retrograde motion
01 Sep 2023  –  Lunar occultation of Neptune
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Ashburn

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39.04°N
77.49°W
EST

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