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Asteroid 5 Astraea

Available Resources

Asteroid 5 Astraea Sky Charts and Coordinates

This is a simplified sky chart, showing where Asteroid 5 Astraea 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 5 Astraea in Sagittarius on March, 28 2017
High Precision Live Sky Chart
18h 53m 27s
-18° 02’ 03”
 = 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 5 Astraea Rise and Set Times

Today's Asteroid 5 Astraea rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 108.0°
Max altitude: 20.5°
Azimuth: 252.0°

Asteroid 5 Astraea Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 5 Astraea with respect of the Sun and the orbits of the major planets. The position of Asteroid 5 Astraea 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 5 Astraea
View Asteroid 5 Astraea in the 3D Solar System Simulator

Asteroid 5 Astraea Ephemeris

The following table lists the ephemerides of Asteroid 5 Astraea computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 5 Astraea in our Online Planetarium at the chosen date.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2017 Mar 21 12.26 18h 46m 29s -18° 16’ 42” Sagittarius
2017 Mar 22 12.25 18h 47m 33s -18° 14’ 39” Sagittarius
2017 Mar 23 12.24 18h 48m 33s -18° 12’ 34” Sagittarius
2017 Mar 24 12.24 18h 49m 35s -18° 10’ 30” Sagittarius
2017 Mar 25 12.23 18h 50m 35s -18° 08’ 24” Sagittarius
2017 Mar 26 12.22 18h 51m 33s -18° 06’ 18” Sagittarius
2017 Mar 27 12.22 18h 52m 31s -18° 04’ 10” Sagittarius
2017 Mar 28 12.21 18h 53m 27s -18° 02’ 03” Sagittarius
2017 Mar 29 12.20 18h 54m 24s -17° 59’ 56” Sagittarius
2017 Mar 30 12.19 18h 55m 18s -17° 57’ 47” Sagittarius
2017 Mar 31 12.18 18h 56m 12s -17° 55’ 40” Sagittarius
2017 Apr 01 12.18 18h 57m 03s -17° 53’ 31” Sagittarius
2017 Apr 02 12.17 18h 57m 56s -17° 51’ 24” Sagittarius
2017 Apr 03 12.16 18h 58m 45s -17° 49’ 17” Sagittarius

Distance of Asteroid 5 Astraea from Earth

The following chart shows the distance of Asteroid 5 Astraea 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 5 Astraea is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Asteroid 5 Astraea from Earth between January 2013 and January 2030

Light Curve of Asteroid 5 Astraea

The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 5 Astraea, 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 5 Astraea between January 2013 and January 2030

Asteroid 5 Astraea Physical Data

The following shows the known values of the most important physical parameters of Asteroid 5 Astraea. Source: JPL Small-Body Database

Physical Parameter Value Relative to Earth
Diameter 119.07 km 0.0093
Sideral Rotation 16.8000 hours 0.7019
Absolute Magnitude 6.85
Geometric Albedo 0.2268

Asteroid 5 Astraea Orbital Elements

The following table lists the orbital elements of Asteroid 5 Astraea at epoch 30 July 2016 00:00 UTC (JD: 2457600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.19155221
Orbit inclination i 5.36795413°
Perihelion distance q 2.08122158 AU
311,346,318 km
Aphelion distance Q 3.06746364 AU
458,886,030 km
Semi-major axis a 2.57434261 AU
385,116,174 km
Orbital period period 4.1300 years
1,508.6828 days
Date of perihelion transit Tp 2016-Jan-30 23:22:42
2,457,418.4741 JD
Next perihelion transit 2020-Mar-18 15:45
2,458,927.1569 JD
Argument of perihelion peri 358.87889591109°
Longitude of the ascending node node 141.59196169646°
Mean anomaly M 43.434789928907°
Mean motion n 0.23861874°/day
Closest approach to Earth* 2016-Feb-15
Distance of closest approach* 1.09542465 AU
163,873,195 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.