The Solar System at your Fingertips
Dwarf Planets and Asteroids » 

Asteroid 3 Juno

Available Resources

Asteroid 3 Juno Sky Charts and Coordinates

This is a simplified sky chart, showing where Asteroid 3 Juno 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 3 Juno in Serpens on January, 22 2017
High Precision Live Sky Chart
17h 43m 18s
-12° 47’ 43”
11.48
 = 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 3 Juno Rise and Set Times

Today's Asteroid 3 Juno rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 102.8°
Max altitude: 25.7°
Azimuth: 257.2°

Asteroid 3 Juno Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 3 Juno with respect of the Sun and the orbits of the major planets. The position of Asteroid 3 Juno 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!

Asteroid 3 Juno Ephemeris

The following table lists the ephemerides of Asteroid 3 Juno computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 3 Juno in our Online Planetarium at the chosen date.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2017 Jan 15 11.48 17h 34m 01s -12° 52’ 13” Serpens
2017 Jan 16 11.48 17h 35m 21s -12° 51’ 47” Serpens
2017 Jan 17 11.48 17h 36m 42s -12° 51’ 16” Serpens
2017 Jan 18 11.48 17h 38m 02s -12° 50’ 43” Serpens
2017 Jan 19 11.48 17h 39m 20s -12° 50’ 03” Serpens
2017 Jan 20 11.48 17h 40m 40s -12° 49’ 20” Serpens
2017 Jan 21 11.48 17h 41m 58s -12° 48’ 33” Serpens
2017 Jan 22 11.48 17h 43m 18s -12° 47’ 43” Serpens
2017 Jan 23 11.48 17h 44m 36s -12° 46’ 46” Serpens
2017 Jan 24 11.48 17h 45m 55s -12° 45’ 47” Serpens
2017 Jan 25 11.48 17h 47m 12s -12° 44’ 43” Serpens
2017 Jan 26 11.47 17h 48m 30s -12° 43’ 35” Serpens
2017 Jan 27 11.47 17h 49m 47s -12° 42’ 23” Serpens
2017 Jan 28 11.47 17h 51m 05s -12° 41’ 06” Serpens

Distance of Asteroid 3 Juno from Earth

The following chart shows the distance of Asteroid 3 Juno 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 3 Juno is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Asteroid 3 Juno from Earth between January 2013 and January 2030

Light Curve of Asteroid 3 Juno

The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 3 Juno, 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 3 Juno between January 2013 and January 2030

Asteroid 3 Juno Physical Data

The following shows the known values of the most important physical parameters of Asteroid 3 Juno. Source: JPL Small-Body Database

Physical Parameter Value Relative to Earth
Diameter 233.92 km 0.0184
Sideral Rotation 7.2100 hours 0.3012
Absolute Magnitude 5.33
Geometric Albedo 0.2383

Asteroid 3 Juno Orbital Elements

The following table lists the orbital elements of Asteroid 3 Juno at epoch 30 July 2016 00:00 UTC (JD: 2457600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.25660133
Orbit inclination i 12.99010228°
Perihelion distance q 1.98400525 AU
296,802,962 km
Aphelion distance Q 3.35365628 AU
501,699,840 km
Semi-major axis a 2.66883077 AU
399,251,401 km
Orbital period period 4.3600 years
1,592.5020 days
Date of perihelion transit Tp 2014-Jul-15 14:00:21
2,456,854.0836 JD
Next perihelion transit 2018-Nov-24 02:03
2,458,446.5856 JD
Argument of perihelion peri 248.23679656353°
Longitude of the ascending node node 169.86299715297°
Mean anomaly M 168.73442883034°
Mean motion n 0.22605937°/day
Closest approach to Earth* 2018-Nov-16
Distance of closest approach* 1.03592987 AU
154,972,902 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.