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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 July, 26 2017
High Precision Live Sky Chart
18h 21m 51s
-18° 34’ 44”
11.31
 = 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: 108.6°
Max altitude: 19.9°
Azimuth: 251.4°

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 Jul 19 11.15 18h 27m 03s -18° 16’ 59” Sagittarius
2017 Jul 20 11.17 18h 26m 16s -18° 19’ 31” Sagittarius
2017 Jul 21 11.20 18h 25m 28s -18° 22’ 02” Sagittarius
2017 Jul 22 11.22 18h 24m 42s -18° 24’ 34” Sagittarius
2017 Jul 23 11.24 18h 23m 57s -18° 27’ 06” Sagittarius
2017 Jul 24 11.27 18h 23m 14s -18° 29’ 39” Sagittarius
2017 Jul 25 11.29 18h 22m 32s -18° 32’ 12” Sagittarius
2017 Jul 26 11.31 18h 21m 51s -18° 34’ 44” Sagittarius
2017 Jul 27 11.34 18h 21m 11s -18° 37’ 14” Sagittarius
2017 Jul 28 11.36 18h 20m 31s -18° 39’ 47” Sagittarius
2017 Jul 29 11.38 18h 19m 54s -18° 42’ 19” Sagittarius
2017 Jul 30 11.40 18h 19m 18s -18° 44’ 49” Sagittarius
2017 Jul 31 11.43 18h 18m 43s -18° 47’ 21” Sagittarius
2017 Aug 01 11.45 18h 18m 11s -18° 49’ 50” 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. The value of the distance of 5 Astraea is also available as a real time updated value in the Live Position and Data Tracker.

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.