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Oct 3, 2024 · Neptune Observational Parameters Discoverer: Johann Gottfried Galle (based on predictions by John Couch Adams and Urbain Leverrier) Discovery Date: 23 September 1846 Distance from Earth Minimum (10 6 km) 4319.0 Maximum (10 6 km) 4711.0 Apparent diameter from Earth Maximum (seconds of arc) 2.4 Minimum (seconds of arc) 2.2 Mean values at opposition from Earth Distance from Earth (10 6 km) 4348. ...
- Neptunian Rings Fact Sheet
Neptune Home Page Notes on the Factsheets Directory to other...
- Neptunian Satellite Fact Sheet
Neptune's Known Satellites - Carnegie Institution, DTM...
- Planetary Fact Table
NEPTUNE PLUTO * - See the Fact Sheet Notes. Planetary Fact...
- Notes on The Factsheets
Length of day (hrs) The average time in hours for the Sun to...
- Neptunian Rings Fact Sheet
With an equatorial diameter of 30,775 miles (49,528 kilometers), Neptune is about four times wider than Earth. If Earth were the size of a nickel, Neptune would be about as big as a baseball. From an average distance of 2.8 billion miles (4.5 billion kilometers), Neptune is 30 astronomical units away from the Sun.
With a radius of 15,299.4 miles (24,622 kilometers), Neptune is about four times wider than Earth. If Earth were the size of a nickel, Neptune would be about as big as a baseball. From an average distance of 2.8 billion miles (4.5 billion kilometers), Neptune is 30 astronomical units away from the Sun.
Oct 20, 2023 · It orbits at an average distance of 2.8 billion miles (4.5 billion km), thirty times farther than Earth. Orbit around the Sun: It takes 165 Earth years for Neptune to go around the Sun one time ...
- Neptune
- Additional Information
- Distance from Earth
- Closest Approach
- Light Curve
- 15 Days Ephemeris
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Neptune is in the constellation of Pisces, at a distance of 4,341,840,134.0 kilometers from Earth. The current Right Ascension is 23h 53m 51s and the Declination is -02° 06’ 27” (apparent coordinates). The magnitude of Neptune is 7.69 (data provided by JPL Horizons). Neptune is the eighth and farthest planet from the sun, and it is the fourth-large...
Today's rise, transit and set times of Neptune from Greenwich, UK(all times relative to the local timezone Europe/London): 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...
The distance of Neptune from Earth is currently 4,341,840,134.0 kilometers, equivalent to 29.0234086467 Astronomical Units. Light takes 4h 1m 22.820sto 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 Unitsand sampled ...
Between 1 January 1600 and 30 December 2499, the closest approach of Neptune to Earth happens on Thu Nov 8 2373 at a distance of 28.806366 Astronomical Units, or 4,309,370,997 kilometers: NOTE: values for the closest approach are computed with a sampling interval of 1 day.
The following chart is the predicted light curve (visual magnitude as a function of time) of Neptune, according to the most recent ephemeridesdata. 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 discrepanci...
The following table lists the ephemeridesof Neptune computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.
Position and finder charts (see also Where is Neptune?)Distance from Earth (see also How far is Neptune from Earth?)Brightness (see also How bright is Neptune?)Neptune has an extremely cold upper atmosphere, with temperatures reaching about 55 K(-218 C). However, the Neptunian surface is about 5400 K(5127 C). Neptune is characterized by extremely intense storms, just like the other 3 planets beyond the Asteroid Belt, as winds approach 600 m/s in speed at times.
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May 16, 2024 · The distance from the center of an object to its equator. The outer or uppermost part of a planet, moon, asteroid, comet or other body. The gravitational acceleration experienced at its surface at the equator. The speed needed for an object to break away from the gravitational pull of a planet or moon. Neptune is the eighth and most distant ...
