Find it in the Sky
Chose a date & time and view the position of asteroid 136199 Eris in the sky on our interactive planetarium.
In Evidence
Asteroid 136199 Eris
Asteroid 136199 Eris is in the constellation of Cetus, at a distance of
Finder Charts
The sky charts below show, at different resolutions, the position of asteroid 136199 Eris in the sky. Click on each chart to access the interactive star map tool.
The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of asteroid 136199 Eris against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.
Equatorial Coordinates
Apparent
J2000
Additional Information
Rise and Set Times
The following table lists today's rise, transit and set times of asteroid 136199 Eris 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' home screen.
Distance from Earth
The distance of asteroid 136199 Eris from Earth is currently
The following graph shows the distance of asteroid 136199 Eris from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).
The value of the distance of 136199 Eris from Earth is also available as a real time updated value in the live position tracker.
Closest Approach to Earth
In the period between January 1, 2000 and December 31, 2099, the closest approach of asteroid 136199 Eris to Earth will happen on Saturday 7 November 2099 at a distance of 82.987534 Astronomical Units, or 12,414,758,403 kilometers:
Note: the values for the closest approach are computed with a sampling interval of 1 day.
Light Curve
The following chart shows the light curve of asteroid 136199 Eris, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.
Orbital Elements
The following table lists the orbital elements of asteroid 136199 Eris at epoch May, 04 2025 00:00 UTC (JD: 2460800.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.43567548 |
| Orbit inclination | i | 43.82162477° |
| Perihelion distance | q | 38.40262283 AU 5,744,950,616 km |
| Aphelion distance | Q |
97.69858016 AU 14,615,499,591 km |
| Semi-major axis | a |
68.05060149 AU 10,180,225,103 km |
| Orbital period | period |
561.3790 years 205,043.6760 days |
| Date of perihelion transit | Tp | August 24, 2257 2,545,647.5289 JD |
| Argument of perihelion | peri | 150.71436355898° |
| Longitude of the ascending node | node | 36.046036082311° |
| Mean anomaly | M | 211.03207767108° |
| Mean motion | n | 0.00175572°/day |
Orbit Visualization
The following chart is a 3D animated visualization of the orbit of asteroid 136199 Eris relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.
Physical Properties
The table below lists the known key physical properties of asteroid 136199 Eris. The source for this data is the JPL Small-Body Database.
| Physical Parameter | Value | Relative to Earth |
|---|---|---|
| Sideral Rotation | 25.9000 hours | 1.0821 |
| Absolute Magnitude | -1.2 |
15 Days Ephemeris
The following table lists the ephemerides of asteroid 136199 Eris computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| Jul 10 2025 | 01h 50m 45s | +00° 00’ 58” | 18.67 | Cetus |
| Jul 11 2025 | 01h 50m 45s | +00° 00’ 56” | 18.67 | Cetus |
| Jul 12 2025 | 01h 50m 46s | +00° 00’ 53” | 18.67 | Cetus |
| Jul 13 2025 | 01h 50m 46s | +00° 00’ 51” | 18.67 | Cetus |
| Jul 14 2025 | 01h 50m 46s | +00° 00’ 48” | 18.67 | Cetus |
| Jul 15 2025 | 01h 50m 47s | +00° 00’ 45” | 18.67 | Cetus |
| Jul 16 2025 | 01h 50m 47s | +00° 00’ 42” | 18.67 | Cetus |
| Jul 17 2025 | 01h 50m 47s | +00° 00’ 39” | 18.67 | Cetus |
| Jul 18 2025 | 01h 50m 48s | +00° 00’ 35” | 18.67 | Cetus |
| Jul 19 2025 | 01h 50m 48s | +00° 00’ 31” | 18.67 | Cetus |
| Jul 20 2025 | 01h 50m 48s | +00° 00’ 27” | 18.67 | Cetus |
| Jul 21 2025 | 01h 50m 48s | +00° 00’ 23” | 18.67 | Cetus |
| Jul 22 2025 | 01h 50m 48s | +00° 00’ 18” | 18.66 | Cetus |
| Jul 23 2025 | 01h 50m 48s | +00° 00’ 14” | 18.66 | Cetus |
Additional Resources on TheSkyLive
- Asteroid 136199 Eris: Complete reference information on TheSkyLive.com.
- Where is asteroid 136199 Eris?: Key information on where to find asteroid 136199 Eris in the sky.
- Distance of asteroid 136199 Eris from Earth: Find out how far asteroid 136199 Eris is from Earth right now.
- How Bright is asteroid 136199 Eris?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Rise and set times of asteroid 136199 Eris from your location.
- Interactive Sky Map: Planetarium-style interactive visualization of asteroid 136199 Eris's position in the sky.
- Live Position Tracker: High precision real time tracker of asteroid 136199 Eris's position using deep space imagery.
- Ephemeris: 15 days asteroid 136199 Eris's computed ephemeris.
- Orbital elements: Information about asteroid 136199 Eris orbital parameters.
- Orbit Visualization: 3D interactive visualization showing the orbit of asteroid 136199 Eris with respect to the major Solar System objects.
- Physical Data: Detailed information about physical properties of asteroid 136199 Eris.