Asteroid 15 Eunomia
Asteroid 15 Eunomia is in the constellation of Cancer, at a distance of
Finder Charts
The sky charts below show, at different resolutions, the position of asteroid 15 Eunomia 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 15 Eunomia 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 15 Eunomia from Gobernador Juan E. Martínez, Argentina (all times relative to the local timezone America/Argentina/Cordoba):
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 15 Eunomia from Earth is currently
The following graph shows the distance of asteroid 15 Eunomia 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 15 Eunomia 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, 1900 and December 31, 2099, the closest approach of asteroid 15 Eunomia to Earth will happen on Saturday 24 October 2071 at a distance of 1.190320 Astronomical Units, or 178,069,374 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 15 Eunomia, 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 15 Eunomia at epoch February, 24 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.18700976 |
| Orbit inclination | i | 11.75360648° |
| Perihelion distance | q | 2.14877925 AU 321,452,801 km |
| Aphelion distance | Q |
3.13733404 AU 469,338,492 km |
| Semi-major axis | a |
2.64305664 AU 395,395,647 km |
| Orbital period | period |
4.2970 years 1,569.4885 days |
| Date of perihelion transit | Tp | July 14, 2024 2,460,505.5914 JD |
| Next perihelion transit | October 30, 2028 2,462,075.0799 JD |
|
| Argument of perihelion | peri | 98.713244720149° |
| Longitude of the ascending node | node | 292.90826165525° |
| Mean anomaly | M | 244.14510652076° |
| Mean motion | n | 0.22937410°/day |
Orbit Visualization
The following chart is a 3D animated visualization of the orbit of asteroid 15 Eunomia 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 15 Eunomia. The source for this data is the JPL Small-Body Database.
| Physical Parameter | Value | Relative to Earth |
|---|---|---|
| Diameter | 255.33 km | 0.0200 |
| Sideral Rotation | 6.0830 hours | 0.2542 |
| Absolute Magnitude | 5.28 | |
| Geometric Albedo | 0.2094 |
15 Days Ephemeris
The following table lists the ephemerides of asteroid 15 Eunomia 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 |
|---|---|---|---|---|
| Jun 24 2025 | 08h 14m 05s | +16° 49’ 42” | 10.81 | Cancer |
| Jun 25 2025 | 08h 15m 45s | +16° 42’ 34” | 10.81 | Cancer |
| Jun 26 2025 | 08h 17m 24s | +16° 35’ 22” | 10.81 | Cancer |
| Jun 27 2025 | 08h 19m 03s | +16° 28’ 07” | 10.81 | Cancer |
| Jun 28 2025 | 08h 20m 43s | +16° 20’ 49” | 10.81 | Cancer |
| Jun 29 2025 | 08h 22m 22s | +16° 13’ 27” | 10.81 | Cancer |
| Jun 30 2025 | 08h 24m 01s | +16° 06’ 03” | 10.81 | Cancer |
| Jul 01 2025 | 08h 25m 41s | +15° 58’ 34” | 10.81 | Cancer |
| Jul 02 2025 | 08h 27m 20s | +15° 51’ 03” | 10.81 | Cancer |
| Jul 03 2025 | 08h 28m 59s | +15° 43’ 28” | 10.80 | Cancer |
| Jul 04 2025 | 08h 30m 38s | +15° 35’ 50” | 10.80 | Cancer |
| Jul 05 2025 | 08h 32m 16s | +15° 28’ 09” | 10.80 | Cancer |
| Jul 06 2025 | 08h 33m 54s | +15° 20’ 24” | 10.80 | Cancer |
| Jul 07 2025 | 08h 35m 32s | +15° 12’ 37” | 10.80 | Cancer |
Additional Resources on TheSkyLive
- Asteroid 15 Eunomia: Complete reference information on TheSkyLive.com.
- Where is asteroid 15 Eunomia?: Key information on where to find asteroid 15 Eunomia in the sky.
- Distance of asteroid 15 Eunomia from Earth: Find out how far asteroid 15 Eunomia is from Earth right now.
- How Bright is asteroid 15 Eunomia?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Rise and set times of asteroid 15 Eunomia from your location.
- Interactive Sky Map: Planetarium-style interactive visualization of asteroid 15 Eunomia's position in the sky.
- Live Position Tracker: High precision real time tracker of asteroid 15 Eunomia's position using deep space imagery.
- Ephemeris: 15 days asteroid 15 Eunomia's computed ephemeris.
- Orbital elements: Information about asteroid 15 Eunomia orbital parameters.
- Orbit Visualization: 3D interactive visualization showing the orbit of asteroid 15 Eunomia with respect to the major Solar System objects.
- Physical Data: Detailed information about physical properties of asteroid 15 Eunomia.