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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 Aquarius on May, 25 2018
High Precision Live Sky Chart
23h 38m 45s
-03° 37’ 04”
 = 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: 93.6°
Max altitude: 34.9°
Azimuth: 266.4°

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
2018 May 18 12.80 23h 31m 41s -04° 14’ 16” Aquarius
2018 May 19 12.79 23h 32m 43s -04° 08’ 45” Aquarius
2018 May 20 12.79 23h 33m 44s -04° 03’ 20” Aquarius
2018 May 21 12.78 23h 34m 45s -03° 57’ 57” Aquarius
2018 May 22 12.78 23h 35m 47s -03° 52’ 38” Aquarius
2018 May 23 12.77 23h 36m 47s -03° 47’ 22” Aquarius
2018 May 24 12.76 23h 37m 46s -03° 42’ 11” Aquarius
2018 May 25 12.76 23h 38m 45s -03° 37’ 04” Aquarius
2018 May 26 12.75 23h 39m 45s -03° 32’ 00” Aquarius
2018 May 27 12.74 23h 40m 42s -03° 27’ 01” Aquarius
2018 May 28 12.74 23h 41m 40s -03° 22’ 05” Aquarius
2018 May 29 12.73 23h 42m 38s -03° 17’ 12” Pisces
2018 May 30 12.72 23h 43m 35s -03° 12’ 25” Pisces
2018 May 31 12.72 23h 44m 30s -03° 07’ 41” Pisces

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 December 2075

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 December 2075

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 22 March 2018 00:00 UTC (JD: 2458200.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.19135853
Orbit inclination i 5.36774504°
Perihelion distance q 2.08102795 AU
311,317,351 km
Aphelion distance Q 3.06594518 AU
458,658,872 km
Semi-major axis a 2.57348657 AU
384,988,111 km
Orbital period period 4.1300 years
1,507.9304 days
Date of perihelion transit Tp 2020-Mar-17 08:27:37
2,458,925.8525 JD
Argument of perihelion peri 358.74621269841°
Longitude of the ascending node node 141.58365207126°
Mean anomaly M 186.83092351406°
Mean motion n 0.23873782°/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 2075-Dec-31, with a sampling interval of 1 day.