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🌎  Greenwich, United Kingdom [change]

Asteroid 15 Eunomia

Asteroid 15 Eunomia is currently in the constellation of Hydra. The current Right Ascension of Asteroid 15 Eunomia is 13h 39m 39s and the Declination is -23° 49’ 58” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 15 Eunomia is 10.80 (JPL).

Summary of key facts about Asteroid 15 Eunomia [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]:

13h 39m 39s
-23° 49’ 58”

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 Asteroid 15 Eunomia available on TheSkyLive:

Available Resources

Asteroid 15 Eunomia Position and Finder Charts

Below we provide Asteroid 15 Eunomia 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.

Map showing Asteroid 15 Eunomia in Hydra on January, 26 2022
Field of view: 50x30 degrees
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Map showing Asteroid 15 Eunomia in Hydra on January, 26 2022
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 15 Eunomia is right now. Click on the image to see a more detailed fullscreen tracker view.

15 Eunomia
RA: 13h 39m 39s
Dec: -23° 49’ 58”
Deep sky finder chart for Asteroid 15 Eunomia
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Asteroid 15 Eunomia?, a page that provides all the information needed to find Asteroid 15 Eunomia in the sky and additional links to sky charts.

Asteroid 15 Eunomia Distance from Earth

The distance of Asteroid 15 Eunomia from Earth is currently 428,230,018 kilometers, equivalent to 2.862541 Astronomical Units. Light takes 23 minutes and 48.4216 seconds to travel from Asteroid 15 Eunomia and arrive to us.

23 minutes and 48.4216 seconds

The following chart shows the distance of Asteroid 15 Eunomia 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.

Distance of Asteroid 15 Eunomia from Earth between January 2013 and December 2100

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 15 Eunomia from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Asteroid 15 Eunomia to Earth

Between January 2013 and December 2100, the closest approach of Asteroid 15 Eunomia to Earth happens on Sat Oct 24 2071 at a distance of 1.190320 Astronomical Units, or 178,069,377 kilometers:

Sat Oct 24 2071

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

Asteroid 15 Eunomia brightness

The current visual magnitude of Asteroid 15 Eunomia is 10.80.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 15 Eunomia, 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.

Predicted magnitude of Asteroid 15 Eunomia between January 2013 and December 2100

Asteroid 15 Eunomia rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Asteroid 15 Eunomia rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.7°
Max altitude: 14.8°
Azimuth: 246.2°

The rise and set times are defined as the time at which the upper limb of Asteroid 15 Eunomia 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.

Asteroid 15 Eunomia Orbital Elements

The following table lists the orbital elements of Asteroid 15 Eunomia at epoch 30 May 2020 00:00 UTC (JD: 2459000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.18617770
Orbit inclination i 11.75361952°
Perihelion distance q 2.15149367 AU
321,858,872 km
Aphelion distance Q 3.13588582 AU
469,121,842 km
Semi-major axis a 2.64368974 AU
395,490,357 km
Orbital period period 4.3000 years
1,570.0524 days
Date of perihelion transit Tp 2020-Mar-26 11:16:01
2,458,934.9695 JD
Next perihelion transit 2024-Jul-13 12:31
2,460,505.0219 JD
Argument of perihelion peri 98.595250985126°
Longitude of the ascending node node 292.93479722439°
Mean anomaly M 15.025609307151°
Mean motion n 0.22929171°/day

Visualization of Asteroid 15 Eunomia Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 15 Eunomia with respect of the Sun and the orbits of the major planets. The position of Asteroid 15 Eunomia and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Asteroid 15 Eunomia
View Asteroid 15 Eunomia in the 3D Solar System Simulator

Asteroid 15 Eunomia Physical Data

The following shows the known values of the most important physical parameters of Asteroid 15 Eunomia. Source: 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

Asteroid 15 Eunomia 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. Click on each row of the table to locate Asteroid 15 Eunomia in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2022 Jan 19 13h 35m 35s -22° 53’ 35” 10.88 Hydra
2022 Jan 20 13h 36m 11s -23° 01’ 01” 10.87 Hydra
2022 Jan 21 13h 36m 45s -23° 08’ 24” 10.86 Hydra
2022 Jan 22 13h 37m 17s -23° 15’ 42” 10.85 Hydra
2022 Jan 23 13h 37m 49s -23° 22’ 58” 10.84 Hydra
2022 Jan 24 13h 38m 18s -23° 30’ 07” 10.83 Hydra
2022 Jan 25 13h 38m 48s -23° 37’ 14” 10.82 Hydra
2022 Jan 26 13h 39m 16s -23° 44’ 16” 10.81 Hydra
2022 Jan 27 13h 39m 43s -23° 51’ 12” 10.80 Hydra
2022 Jan 28 13h 40m 09s -23° 58’ 05” 10.78 Hydra
2022 Jan 29 13h 40m 35s -24° 04’ 54” 10.77 Hydra
2022 Jan 30 13h 40m 59s -24° 11’ 38” 10.76 Hydra
2022 Jan 31 13h 41m 21s -24° 18’ 15” 10.75 Hydra
2022 Feb 01 13h 41m 43s -24° 24’ 50” 10.74 Hydra