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 Capricornus on February, 21 2018
High Precision Live Sky Chart
21h 57m 15s
-08° 33’ 55”
10.24
 = 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: 98.6°
Max altitude: 30.0°
Azimuth: 261.4°

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
2018 Feb 14 10.24 21h 44m 40s -09° 23’ 57” Capricornus
2018 Feb 15 10.23 21h 46m 28s -09° 16’ 59” Capricornus
2018 Feb 16 10.23 21h 48m 15s -09° 09’ 56” Capricornus
2018 Feb 17 10.23 21h 50m 03s -09° 02’ 52” Capricornus
2018 Feb 18 10.23 21h 51m 51s -08° 55’ 42” Capricornus
2018 Feb 19 10.23 21h 53m 39s -08° 48’ 29” Capricornus
2018 Feb 20 10.23 21h 55m 27s -08° 41’ 13” Capricornus
2018 Feb 21 10.24 21h 57m 15s -08° 33’ 55” Capricornus
2018 Feb 22 10.24 21h 59m 03s -08° 26’ 31” Aquarius
2018 Feb 23 10.24 22h 00m 51s -08° 19’ 05” Aquarius
2018 Feb 24 10.25 22h 02m 39s -08° 11’ 36” Aquarius
2018 Feb 25 10.25 22h 04m 27s -08° 04’ 05” Aquarius
2018 Feb 26 10.26 22h 06m 15s -07° 56’ 29” Aquarius
2018 Feb 27 10.26 22h 08m 03s -07° 48’ 50” Aquarius

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 December 2075

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 December 2075

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 03 September 2017 00:00 UTC (JD: 2458000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.25685345
Orbit inclination i 12.98996149°
Perihelion distance q 1.98310976 AU
296,668,998 km
Aphelion distance Q 3.35395266 AU
501,744,178 km
Semi-major axis a 2.66853121 AU
399,206,588 km
Orbital period period 4.3600 years
1,592.2339 days
Date of perihelion transit Tp 2018-Nov-23 16:06:28
2,458,446.1712 JD
Argument of perihelion peri 248.20649277881°
Longitude of the ascending node node 169.85829268155°
Mean anomaly M 259.23489033266°
Mean motion n 0.22609744°/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 2075-Dec-31, with a sampling interval of 1 day.