Saturn Ephemeris Calculator
Compute the position of Saturn for any date and time between 1 January 1600 and 30 December 2499 and display the results on an interactive star map.
In Evidence
Saturn
Saturn is the sixth planet from the Sun and is the second largest planet in the Solar System after Jupiter. It has a diameter of 116,460 kilometers and a mass of 5.68 x 10^26 kilograms, making it approximately 95 times more massive than Earth. Saturn is a gas giant planet with a composition similar to Jupiter, primarily composed of hydrogen and helium with trace amounts of other gases. The planet is famous for its extensive ring system, consisting of numerous narrow, bright rings composed of ice particles, rock debris, and dust. Saturn has a day length of 10.7 hours and an orbital period of 29.4 Earth years. The planet has 82 known moons, with the largest being Titan, a moon with a thick atmosphere and the only known moon with stable liquid on its surface. The planet has been explored by multiple spacecraft, including NASA's Cassini-Huygens mission, which spent 13 years in orbit around Saturn and its moons.
Saturn is currently in the constellation of Aquarius.
The current Right Ascension of Saturn is 22h 35m 42s and the Declination is -10° 29’ 22” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom ). The current magnitude of Saturn is 0.86 (JPL).
Today's rise, transit and set times of Saturn from Greenwich, United Kingdom (all times relative to the local timezone Europe/London):
- Saturn is below the horizon from Greenwich, United Kingdom .
- Given its current magnitude, Saturn is visible to the naked eye, easy and bright under dark skies, might be more difficult from heavily light polluted areas.
- Go to interactive sky chart
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.
Saturn Position and Finder Charts
Below we provide Saturn finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.
Higher precision deep sky finder chart, 60 arcmin wide, showing where Saturn is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Saturn?, a page that provides all the information needed to find Saturn in the sky and additional links to sky charts.
Saturn Distance from Earth
The distance of Saturn from Earth is currently 1,452,454,160 kilometers, equivalent to 9.709056 Astronomical Units. Light takes 1 hours, 20 minutes and 44.8656 seconds to travel from Saturn and arrive to us.
The following chart shows the distance of Saturn 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 Saturn from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach of Saturn to Earth
Between 1 January 1600 and 30 December 2499, the closest approach of Saturn to Earth happens on Wed Dec 11 1619 at a distance of 8.012797 Astronomical Units, or 1,198,697,442 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Saturn Brightness and Light Curve
The following chart is the predicted light curve (visual magnitude as a function of time) of Saturn, 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.
Saturn Physical Data
The following shows the known values of the most important physical parameters of Saturn. Source: JPL Small-Body Database
| Physical Parameter | Value | Relative to Earth |
|---|---|---|
| Diameter | 116464 km | 9.1402 |
| Mass | 568.319 x 1024 kg | 95.1609 |
| Density | 0.6871 gr/cm3 | 0.1246 |
| Escape Velocity | 36.09 km/s | 3.2252 |
| Sideral Rotation | 10.6562 hours | 0.4452 |
| Absolute Magnitude | -8.88 | |
| Geometric Albedo | 0.47 |
Saturn 15 Days Ephemeris
The following table lists the ephemerides of Saturn computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Saturn in our Online Planetarium at the chosen date.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Apparent DiameterDiameter | Constellation |
|---|---|---|---|---|---|
| 2023 May 23 | 22h 34m 39s | -10° 33’ 48” | 0.88 | 16.3” | Aquarius |
| 2023 May 24 | 22h 34m 49s | -10° 33’ 06” | 0.88 | 16.4” | Aquarius |
| 2023 May 25 | 22h 34m 58s | -10° 32’ 26” | 0.88 | 16.4” | Aquarius |
| 2023 May 26 | 22h 35m 07s | -10° 31’ 49” | 0.87 | 16.4” | Aquarius |
| 2023 May 27 | 22h 35m 14s | -10° 31’ 13” | 0.87 | 16.4” | Aquarius |
| 2023 May 28 | 22h 35m 22s | -10° 30’ 38” | 0.87 | 16.5” | Aquarius |
| 2023 May 29 | 22h 35m 30s | -10° 30’ 07” | 0.86 | 16.5” | Aquarius |
| 2023 May 30 | 22h 35m 38s | -10° 29’ 38” | 0.86 | 16.5” | Aquarius |
| 2023 May 31 | 22h 35m 44s | -10° 29’ 11” | 0.86 | 16.6” | Aquarius |
| 2023 Jun 01 | 22h 35m 52s | -10° 28’ 45” | 0.85 | 16.6” | Aquarius |
| 2023 Jun 02 | 22h 35m 57s | -10° 28’ 23” | 0.85 | 16.6” | Aquarius |
| 2023 Jun 03 | 22h 36m 03s | -10° 28’ 01” | 0.85 | 16.6” | Aquarius |
| 2023 Jun 04 | 22h 36m 10s | -10° 27’ 42” | 0.84 | 16.7” | Aquarius |
| 2023 Jun 05 | 22h 36m 15s | -10° 27’ 26” | 0.84 | 16.7” | Aquarius |