Your guide to the Solar System and the night sky
Please donate now to help keep TheSkyLive ads-free. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]

Asteroid 5 Astraea

Asteroid 5 Astraea is currently in the constellation of Aquarius. The current Right Ascension of Asteroid 5 Astraea is 22h 53m 42s and the Declination is -11° 00’ 40” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 5 Astraea is 11.53 (JPL).

Summary of key facts about Asteroid 5 Astraea [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

22h 53m 42s
-11° 00’ 40”
  • 5 Astraea is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-West direction at an altitude of 17° above the horizon.
  • Given its current magnitude, 5 Astraea is visible with the help of a telescope havng an aperture of 4 inches (100mm) or more.
  • See also 5 Astraea rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Asteroid 5 Astraea available on TheSkyLive:

Available Resources

Asteroid 5 Astraea Position and Finder Charts

Below we provide Asteroid 5 Astraea finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Asteroid 5 Astraea in Aquarius on October, 02 2022
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid 5 Astraea in Aquarius on October, 02 2022
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 5 Astraea is right now. Click on the image to see a more detailed fullscreen tracker view.

5 Astraea
RA: 22h 53m 42s
Dec: -11° 00’ 40”
Deep sky finder chart for Asteroid 5 Astraea
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Asteroid 5 Astraea?, a page that provides all the information needed to find Asteroid 5 Astraea in the sky and additional links to sky charts.

Asteroid 5 Astraea Distance from Earth

The distance of Asteroid 5 Astraea from Earth is currently 307,531,125 kilometers, equivalent to 2.055719 Astronomical Units. Light takes 17 minutes and 5.8134 seconds to travel from Asteroid 5 Astraea and arrive to us.

17 minutes and 5.8134 seconds

The following chart shows the distance of Asteroid 5 Astraea from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Asteroid 5 Astraea from Earth between January 1900 and January 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 5 Astraea from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Asteroid 5 Astraea to Earth

Between January 1900 and January 2100, the closest approach of Asteroid 5 Astraea to Earth happens on Fri Feb 13 1925 at a distance of 1.093100 Astronomical Units, or 163,525,363 kilometers:

Fri Feb 13 1925

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Asteroid 5 Astraea brightness

The current visual magnitude of Asteroid 5 Astraea is 11.53.


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 1900 and January 2100

Asteroid 5 Astraea rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

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

Azimuth: 101.1°
Max altitude: 27.4°
Azimuth: 259.0°

The rise and set times are defined as the time at which the upper limb of Asteroid 5 Astraea touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Asteroid 5 Astraea Orbital Elements

The following table lists the orbital elements of Asteroid 5 Astraea at epoch 20 January 2022 00:00 UTC (JD: 2459600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.19009936
Orbit inclination i 5.36762329°
Perihelion distance q 2.08563717 AU
312,006,881 km
Aphelion distance Q 3.06471605 AU
458,474,996 km
Semi-major axis a 2.57517661 AU
385,240,939 km
Orbital period period 4.1326 years
1,509.4160 days
Date of perihelion transit Tp 2020-Mar-17 00:44:13
2,458,925.5307 JD
Next perihelion transit 2024-May-04 10:43
2,460,434.9467 JD
Argument of perihelion peri 358.74039042063°
Longitude of the ascending node node 141.57035967935°
Mean anomaly M 160.98208803229°
Mean motion n 0.23850283°/day

Visualization of Asteroid 5 Astraea Orbit

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 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 15 Days 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 Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2022 Sep 25 22h 58m 35s -10° 25’ 37” 11.39 Aquarius
2022 Sep 26 22h 57m 51s -10° 30’ 59” 11.41 Aquarius
2022 Sep 27 22h 57m 07s -10° 36’ 12” 11.43 Aquarius
2022 Sep 28 22h 56m 25s -10° 41’ 18” 11.45 Aquarius
2022 Sep 29 22h 55m 42s -10° 46’ 17” 11.47 Aquarius
2022 Sep 30 22h 55m 03s -10° 51’ 07” 11.49 Aquarius
2022 Oct 01 22h 54m 23s -10° 55’ 50” 11.51 Aquarius
2022 Oct 02 22h 53m 44s -11° 00’ 24” 11.53 Aquarius
2022 Oct 03 22h 53m 06s -11° 04’ 50” 11.55 Aquarius
2022 Oct 04 22h 52m 28s -11° 09’ 06” 11.57 Aquarius
2022 Oct 05 22h 51m 52s -11° 13’ 14” 11.59 Aquarius
2022 Oct 06 22h 51m 18s -11° 17’ 13” 11.61 Aquarius
2022 Oct 07 22h 50m 44s -11° 21’ 03” 11.63 Aquarius
2022 Oct 08 22h 50m 12s -11° 24’ 44” 11.65 Aquarius