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Asteroid 15 Eunomia

Available Resources

Asteroid 15 Eunomia Sky Charts and Coordinates

This is a simplified sky chart, showing where Asteroid 15 Eunomia is now with respect to the brightest stars and constellations. More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Asteroid 15 Eunomia in Hydra on March, 28 2017
High Precision Live Sky Chart
09h 33m 29s
+02° 07’ 36”
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Asteroid 15 Eunomia Rise and Set Times

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

Azimuth: 87.9°
Max altitude: 40.6°
Azimuth: 272.1°

Asteroid 15 Eunomia Orbit Diagram

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 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 MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2017 Mar 21 9.74 09h 36m 28s +01° 46’ 40” Hydra
2017 Mar 22 9.76 09h 35m 57s +01° 49’ 49” Hydra
2017 Mar 23 9.78 09h 35m 30s +01° 52’ 54” Hydra
2017 Mar 24 9.80 09h 35m 03s +01° 55’ 58” Hydra
2017 Mar 25 9.82 09h 34m 36s +01° 58’ 58” Hydra
2017 Mar 26 9.84 09h 34m 13s +02° 01’ 54” Hydra
2017 Mar 27 9.86 09h 33m 50s +02° 04’ 46” Hydra
2017 Mar 28 9.88 09h 33m 29s +02° 07’ 36” Hydra
2017 Mar 29 9.91 09h 33m 09s +02° 10’ 22” Hydra
2017 Mar 30 9.93 09h 32m 50s +02° 13’ 02” Hydra
2017 Mar 31 9.95 09h 32m 35s +02° 15’ 39” Hydra
2017 Apr 01 9.97 09h 32m 18s +02° 18’ 12” Hydra
2017 Apr 02 9.99 09h 32m 06s +02° 20’ 40” Hydra
2017 Apr 03 10.01 09h 31m 54s +02° 23’ 03” Hydra

Distance of Asteroid 15 Eunomia from Earth

The following chart shows the distance of Asteroid 15 Eunomia from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval. The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 15 Eunomia is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Asteroid 15 Eunomia from Earth between January 2013 and January 2030

Light Curve of Asteroid 15 Eunomia

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 January 2030

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 Orbital Elements

The following table lists the orbital elements of Asteroid 15 Eunomia at epoch 30 July 2016 00:00 UTC (JD: 2457600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.18714694
Orbit inclination i 11.73842817°
Perihelion distance q 2.14856049 AU
321,420,076 km
Aphelion distance Q 3.13790663 AU
469,424,151 km
Semi-major axis a 2.64323356 AU
395,422,113 km
Orbital period period 4.3000 years
1,569.6461 days
Date of perihelion transit Tp 2015-Dec-03 16:02:34
2,457,360.1685 JD
Next perihelion transit 2020-Mar-21 07:32
2,458,929.8145 JD
Argument of perihelion peri 97.536497270807°
Longitude of the ascending node node 293.18028601453°
Mean anomaly M 55.120294968425°
Mean motion n 0.22935107°/day
Closest approach to Earth* 2028-Oct-22
Distance of closest approach* 1.19032762 AU
178,070,478 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2030-Jan-01, with a sampling interval of 1 day.