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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 Sagittarius on September, 22 2017
18h 22m 20s
-20° 39’ 12”
12.38
 = 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: 110.7°
Max altitude: 17.9°
Azimuth: 249.3°

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
2017 Sep 15 12.29 18h 18m 14s -20° 28’ 18” Sagittarius
2017 Sep 16 12.30 18h 18m 46s -20° 29’ 57” Sagittarius
2017 Sep 17 12.31 18h 19m 18s -20° 31’ 35” Sagittarius
2017 Sep 18 12.33 18h 19m 53s -20° 33’ 11” Sagittarius
2017 Sep 19 12.34 18h 20m 29s -20° 34’ 45” Sagittarius
2017 Sep 20 12.36 18h 21m 05s -20° 36’ 15” Sagittarius
2017 Sep 21 12.37 18h 21m 42s -20° 37’ 45” Sagittarius
2017 Sep 22 12.38 18h 22m 20s -20° 39’ 12” Sagittarius
2017 Sep 23 12.40 18h 23m 00s -20° 40’ 36” Sagittarius
2017 Sep 24 12.41 18h 23m 41s -20° 41’ 59” Sagittarius
2017 Sep 25 12.42 18h 24m 24s -20° 43’ 21” Sagittarius
2017 Sep 26 12.43 18h 25m 06s -20° 44’ 39” Sagittarius
2017 Sep 27 12.45 18h 25m 50s -20° 45’ 54” Sagittarius
2017 Sep 28 12.46 18h 26m 35s -20° 47’ 08” Sagittarius

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.

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 03 September 2017 00:00 UTC (JD: 2458000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.19146493
Orbit inclination i 5.36794595°
Perihelion distance q 2.08059138 AU
311,252,041 km
Aphelion distance Q 3.06597916 AU
458,663,956 km
Semi-major axis a 2.57328527 AU
384,957,998 km
Orbital period period 4.1300 years
1,507.7534 days
Date of perihelion transit Tp 2016-Jan-30 13:54:09
2,457,418.0793 JD
Next perihelion transit 2020-Mar-17 07:59
2,458,925.8327 JD
Argument of perihelion peri 358.75692410097°
Longitude of the ascending node node 141.58348325°
Mean anomaly M 139.06216629999°
Mean motion n 0.23876583°/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.