Asteroid 5 Astraea
5 Astraea is a relatively small main-belt asteroid located between the orbits of Mars and Jupiter. It was discovered 8 December 1845 by German astronomer Karl Ludwig Hencke and is named after the Greek goddess of justice. Astraea has a diameter of approximately 119 kilometers and is irregularly shaped, with a rotation period of about 16 hours. Its surface is covered in numerous impact craters, some of which are several kilometers in diameter. Astraea's composition is thought to be a mixture of rock and metal, similar to the composition of the Earth's crust. It has a relatively low density compared to other asteroids, indicating that it may have a porous interior. Astraea orbits the Sun once every 4.14 Earth years and has been observed by ground-based telescopes, which have revealed insights into its geology, composition, and history.
The current Right Ascension of Asteroid 5 Astraea is 06h 38m 28s and the Declination is +15° 50’ 26” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom ). The current magnitude of Asteroid 5 Astraea is 9.90 (JPL).
- 5 Astraea is above the horizon from Greenwich, United Kingdom .
- Right now it is placed in the South-South-East direction at an altitude of 53° above the horizon.
- Given its current magnitude, 5 Astraea is visible with the help of a binocular with a 60mm aperture, might require a small telescope.
- Go to interactive sky chart
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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.
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.
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 191,241,344 kilometers, equivalent to 1.278369 Astronomical Units. Light takes 10 minutes and 37.9125 seconds to travel from Asteroid 5 Astraea and arrive to us.
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.
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 1 January 1900 and 31 December 2099, the closest approach of Asteroid 5 Astraea to Earth happens on Fri Feb 13 1925 at a distance of 1.093100 Astronomical Units, or 163,525,365 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Asteroid 5 Astraea Brightness and Light Curve
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.
Asteroid 5 Astraea Orbital Elements
|Perihelion distance||q||2.09409950 AU
|Date of perihelion transit||Tp||2024-May-06 19:49:09
|Argument of perihelion||peri||358.88655645318°|
|Longitude of the ascending node||node||141.52276093715°|
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!
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|
|Sideral Rotation||16.8000 hours||0.7019|
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.
|2023 Dec 04||06h 43m 06s||+15° 46’ 09”||10.11||Gemini|
|2023 Dec 05||06h 42m 33s||+15° 46’ 27”||10.08||Gemini|
|2023 Dec 06||06h 41m 56s||+15° 46’ 51”||10.05||Gemini|
|2023 Dec 07||06h 41m 17s||+15° 47’ 22”||10.02||Gemini|
|2023 Dec 08||06h 40m 39s||+15° 48’ 00”||9.99||Gemini|
|2023 Dec 09||06h 39m 56s||+15° 48’ 42”||9.96||Gemini|
|2023 Dec 10||06h 39m 14s||+15° 49’ 32”||9.93||Gemini|
|2023 Dec 11||06h 38m 29s||+15° 50’ 29”||9.90||Gemini|
|2023 Dec 12||06h 37m 42s||+15° 51’ 30”||9.87||Gemini|
|2023 Dec 13||06h 36m 55s||+15° 52’ 40”||9.84||Gemini|
|2023 Dec 14||06h 36m 06s||+15° 53’ 56”||9.81||Gemini|
|2023 Dec 15||06h 35m 16s||+15° 55’ 17”||9.78||Gemini|
|2023 Dec 16||06h 34m 23s||+15° 56’ 44”||9.75||Gemini|
|2023 Dec 17||06h 33m 32s||+15° 58’ 18”||9.72||Gemini|