Neptune (Planet)

Image of Neptune
© NASA/Voyager 2
Finder chart
Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom. Click to enlarge.

Show information for

From San Diego , Neptune is visible in the evening sky, becoming accessible around 17:45 (PST), 53° above your southern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 18:08, 53° above your southern horizon. It will continue to be observable until around 22:12, when it sinks below 21° above your western horizon.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.
Name Neptune
Object type Superior planet
Current position
Computed for:11 December 2023
Right ascension:23h42m [2]
Declination:-03°18' [2]
Magnitude:7.88 (V) [1]
Angular diameter:2.3 arcsec[2]
Distance:29.79 AU
247.73 lightmin [2]
Angular motion (speed):56.88 arcmin/yr[2]
Angular motion (pos ang):53.1°
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°
Absolute mag (H):-6.87 [1]
Slope parameter (n):2.00 [1]
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
Visibility from San Diego

All times shown in San Diego local time.

06 Dec 2023  –  Neptune ends retrograde motion
19 Dec 2023  –  Lunar occultation of Neptune
15 Jan 2024  –  Lunar occultation of Neptune
11 Feb 2024  –  Lunar occultation of Neptune
17 Mar 2024  –  Neptune at solar conjunction
04 May 2024  –  Lunar occultation of Neptune
31 May 2024  –  Lunar occultation of Neptune
28 Jun 2024  –  Lunar occultation of Neptune
Printable finder charts


San Diego



Color scheme