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Asteroid 5 Astraea

Asteroid 5 Astraea is currently in the constellation of Sagittarius. The current Right Ascension of Asteroid 5 Astraea is 18h 23m 40s and the Declination is -16° 38’ 03” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 5 Astraea is 11.32 (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]:

18h 23m 40s
-16° 38’ 03”
  • 5 Astraea is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-West direction at an altitude of 11° above the horizon.
  • Given its current magnitude, 5 Astraea is visible with the help of a binocular with a 70-80mm aperture or a small telescope.
  • 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 Sagittarius on May, 15 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid 5 Astraea in Sagittarius on May, 15 2021
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: 18h 23m 40s
Dec: -16° 38’ 03”
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 286,559,971 kilometers, equivalent to 1.915535 Astronomical Units. Light takes 15 minutes and 55.8612 seconds to travel from Asteroid 5 Astraea and arrive to us.

15 minutes and 55.8612 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 2013 and December 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 2013 and December 2100, the closest approach of Asteroid 5 Astraea to Earth happens on Mon Feb 15 2016 at a distance of 1.095425 Astronomical Units, or 163,873,203 kilometers:

Mon Feb 15 2016

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 11.32.


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 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: 106.6°
Max altitude: 21.9°
Azimuth: 253.4°

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 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
2021 May 08 18h 26m 12s -16° 44’ 13” 11.44 Sagittarius
2021 May 09 18h 25m 55s -16° 43’ 14” 11.42 Sagittarius
2021 May 10 18h 25m 38s -16° 42’ 15” 11.41 Sagittarius
2021 May 11 18h 25m 19s -16° 41’ 21” 11.39 Sagittarius
2021 May 12 18h 24m 59s -16° 40’ 28” 11.37 Sagittarius
2021 May 13 18h 24m 37s -16° 39’ 39” 11.35 Sagittarius
2021 May 14 18h 24m 12s -16° 38’ 53” 11.34 Sagittarius
2021 May 15 18h 23m 47s -16° 38’ 09” 11.32 Sagittarius
2021 May 16 18h 23m 20s -16° 37’ 28” 11.30 Sagittarius
2021 May 17 18h 22m 50s -16° 36’ 51” 11.28 Sagittarius
2021 May 18 18h 22m 20s -16° 36’ 15” 11.27 Sagittarius
2021 May 19 18h 21m 50s -16° 35’ 44” 11.25 Sagittarius
2021 May 20 18h 21m 16s -16° 35’ 14” 11.23 Sagittarius
2021 May 21 18h 20m 41s -16° 34’ 49” 11.21 Sagittarius