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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 5:52  ☀️ Transit: 12:04  🌅 Sunset: 18:18

Asteroid 5 Astraea

Asteroid 5 Astraea is currently in the constellation of Pisces. The current Right Ascension of Asteroid 5 Astraea is 01h 11m 17s and the Declination is +03° 48’ 00” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 5 Astraea is 12.43 (JPL).

01h 11m 17s
+03° 48’ 00”

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

Azimuth: 86.3°
Max altitude: 42.3°
Azimuth: 273.8°
  • 5 Astraea is above the horizon from Greenwich, United Kingdom [change].
  • Right now it is placed in the South-West direction at an altitude of 37° 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.
  • 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.

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 Pisces on March, 25 2023
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid 5 Astraea in Pisces on March, 25 2023
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: 01h 11m 17s
Dec: +03° 48’ 00”
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 550,685,214 kilometers, equivalent to 3.681103 Astronomical Units. Light takes 30 minutes and 36.8882 seconds to travel from Asteroid 5 Astraea and arrive to us.

30 minutes and 36.8882 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.

Chart of the distance of Asteroid 5 Astraea from Earth in Astronomical Units (au)

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:

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 12.43.


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.

Chart of the magnitude of Asteroid 5 Astraea as a function of time

Asteroid 5 Astraea Orbital Elements

The following table lists the orbital elements of Asteroid 5 Astraea at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.18792368
Orbit inclination i 5.36012857°
Perihelion distance q 2.09409950 AU
313,272,827 km
Aphelion distance Q 3.06329633 AU
458,262,609 km
Semi-major axis a 2.57869792 AU
385,767,718 km
Orbital period period 4.1410 years
1,512.5131 days
Date of perihelion transit Tp 2024-May-06 19:49:09
2,460,437.3258 JD
Argument of perihelion peri 358.88655645318°
Longitude of the ascending node node 141.52276093715°
Mean anomaly M 256.0291368156°
Mean motion n 0.23801448°/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
2023 Mar 18 00h 59m 43s +02° 37’ 41” 12.50 Cetus
2023 Mar 19 01h 01m 14s +02° 46’ 57” 12.50 Pisces
2023 Mar 20 01h 02m 44s +02° 56’ 12” 12.49 Pisces
2023 Mar 21 01h 04m 14s +03° 05’ 26” 12.48 Pisces
2023 Mar 22 01h 05m 47s +03° 14’ 39” 12.47 Pisces
2023 Mar 23 01h 07m 18s +03° 23’ 53” 12.46 Pisces
2023 Mar 24 01h 08m 48s +03° 33’ 07” 12.45 Pisces
2023 Mar 25 01h 10m 21s +03° 42’ 20” 12.44 Pisces
2023 Mar 26 01h 11m 53s +03° 51’ 33” 12.43 Pisces
2023 Mar 27 01h 13m 24s +04° 00’ 45” 12.42 Pisces
2023 Mar 28 01h 14m 57s +04° 09’ 56” 12.40 Pisces
2023 Mar 29 01h 16m 29s +04° 19’ 05” 12.39 Pisces
2023 Mar 30 01h 18m 02s +04° 28’ 15” 12.38 Pisces
2023 Mar 31 01h 19m 36s +04° 37’ 24” 12.37 Pisces