Neptune

Neptune is currently in the constellation of Aquarius. The current Right Ascension of Neptune is 23h 25m 34s and the Declination is -04° 54’ 38” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Neptune is 7.83 (JPL).

Summary of key facts about Neptune [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Neptune available on TheSkyLive:

Available Resources

• Position and finder charts (see also Where is Neptune?)
• Distance from Earth (see also How far is Neptune from Earth?)
• Rise and set times (see also When does Neptune rise and set?)
• Brightness (see also How bright is Neptune?)
• Physical data. Detailed information about physical properties of Neptune, such as mass and geometric properties.
• 15 days ephemerides. Table showing celestial coordinates and magnitude of Neptune for the past and next 7 days.
• Interactive sky chart. An online planetarium application that shows where to locate Neptune in the sky from your location.
• Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Neptune with your telescope or on your astrophotographies.

Higher precision deep sky finder chart, 60 arcmin wide, showing where Neptune is right now. Click on the image to see a more detailed fullscreen tracker view.

Also check out Where is Neptune?, a page that provides all the information needed to find Neptune in the sky and additional links to sky charts.

Neptune Distance from Earth

The distance of Neptune from Earth is currently 4,352,773,991 kilometers, equivalent to 29.096497 Astronomical Units. Light takes 4 hours, 1 minutes and 59.2912 seconds to travel from Neptune and arrive to us.

The following chart shows the distance of Neptune from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of Neptune from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Neptune to Earth

Between January 1900 and January 2100 the closest approach of Neptune to Earth happens on Tue Oct 29 2041 at a distance of 28.81417197 Astronomical Units, or 4,310,538,781 kilometers:

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Neptune brightness

The current visual magnitude of Neptune is 7.83.

The following chart is the predicted light curve (visual magnitude as a function of time) of Neptune, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Neptune rise and set times

Today's Neptune rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

The rise and set times are defined as the time at which the upper limb of Neptune touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Neptune 15 Days Ephemeris

The following table lists the ephemerides of Neptune computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Neptune in our Online Planetarium at the chosen date.

Date	Right AscensionR.A.	DeclinationDec.	MagnitudeMag	Apparent DiameterDiameter	Constellation
2020 Jul 31	23h 26m 05s	-04° 51’ 02”	7.84	2.3”	Aquarius
2020 Aug 01	23h 26m 02s	-04° 51’ 30”	7.83	2.3”	Aquarius
2020 Aug 02	23h 25m 57s	-04° 52’ 00”	7.83	2.3”	Aquarius
2020 Aug 03	23h 25m 53s	-04° 52’ 29”	7.83	2.3”	Aquarius
2020 Aug 04	23h 25m 49s	-04° 52’ 59”	7.83	2.3”	Aquarius
2020 Aug 05	23h 25m 44s	-04° 53’ 30”	7.83	2.3”	Aquarius
2020 Aug 06	23h 25m 40s	-04° 54’ 01”	7.83	2.3”	Aquarius
2020 Aug 07	23h 25m 35s	-04° 54’ 33”	7.83	2.3”	Aquarius
2020 Aug 08	23h 25m 31s	-04° 55’ 05”	7.83	2.3”	Aquarius
2020 Aug 09	23h 25m 26s	-04° 55’ 36”	7.83	2.3”	Aquarius
2020 Aug 10	23h 25m 20s	-04° 56’ 09”	7.83	2.3”	Aquarius
2020 Aug 11	23h 25m 15s	-04° 56’ 43”	7.83	2.3”	Aquarius
2020 Aug 12	23h 25m 10s	-04° 57’ 15”	7.83	2.3”	Aquarius
2020 Aug 13	23h 25m 05s	-04° 57’ 50”	7.83	2.3”	Aquarius