(5) Astraea |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 31 Aug 2025 | 12.3 | 2.842 AU | 2.579 AU | 16h44m | -17°49' | 94.5° | 20.7° |
Opposition | 28 Aug 2026 | 11.1 | 3.037 AU | 2.028 AU | 22h31m | -11°18' | 178.0° | 0.7° |
(5) Astraea - 2025-08-31
astro.vanbuitenen.nl
The interactive orbit chart above shows the body's path through the solar system and its position at the given date.
Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below.
(Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)
The orbital elements of Astraea are:
e (Eccentricity) : 0.1874407
a (Semimajor axis) : 2.5767618
i (Inclination) : 5.35887
Ω (Longitude of ascending node) : 141.45353
ω (Argument of perihelion) : 359.31775
M (Mean anomaly) : 86.24723
Epoch : 2025 May 05
L (Longitude of perihelion) : 140.77426
B (Latitude of perihelion) : -0.06372
P (Orbital period in years) : 4.14
The light curve chart below shows the estimated development of the minor planet's magnitude.
The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.
The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found below.
Ephemerides:
Date Time RA (2000) DEC (2000) delta radius elong phase PA magn
2025-08-31 00:00 UT 16 44 35.2 -17 49 55 2.579 2.842 94.5 20.7 98 12.3
2025-08-31 14:46 UT 16 45 03.3 -17 52 09 2.588 2.843 94.0 20.7 98 12.3
2025-09-01 00:00 UT 16 45 21.0 -17 53 32 2.594 2.844 93.7 20.7 98 12.4
2025-09-02 00:00 UT 16 46 07.7 -17 57 08 2.609 2.845 93.0 20.7 97 12.4
2025-09-03 00:00 UT 16 46 55.5 -18 00 44 2.624 2.847 92.2 20.7 97 12.4
2025-09-04 00:00 UT 16 47 44.3 -18 04 19 2.639 2.848 91.4 20.7 97 12.4
2025-09-05 00:00 UT 16 48 34.0 -18 07 54 2.654 2.850 90.7 20.7 97 12.4
2025-09-06 00:00 UT 16 49 24.7 -18 11 29 2.669 2.851 89.9 20.7 97 12.4
2025-09-07 00:00 UT 16 50 16.3 -18 15 02 2.684 2.853 89.1 20.7 97 12.4
2025-09-08 00:00 UT 16 51 08.9 -18 18 35 2.699 2.854 88.4 20.7 97 12.4
2025-09-09 00:00 UT 16 52 02.4 -18 22 07 2.714 2.856 87.6 20.6 97 12.5
2025-09-10 00:00 UT 16 52 56.8 -18 25 38 2.729 2.857 86.9 20.6 96 12.5
2025-09-11 00:00 UT 16 53 52.1 -18 29 08 2.744 2.859 86.1 20.6 96 12.5
2025-09-12 00:00 UT 16 54 48.3 -18 32 38 2.759 2.860 85.4 20.5 96 12.5
2025-09-13 00:00 UT 16 55 45.4 -18 36 06 2.774 2.862 84.7 20.5 96 12.5
2025-09-14 00:00 UT 16 56 43.3 -18 39 32 2.789 2.863 83.9 20.5 96 12.5
2025-09-15 00:00 UT 16 57 42.1 -18 42 58 2.804 2.864 83.2 20.4 96 12.5
2025-09-16 00:00 UT 16 58 41.7 -18 46 22 2.819 2.866 82.5 20.4 96 12.5
2025-09-17 00:00 UT 16 59 42.1 -18 49 45 2.834 2.867 81.7 20.3 95 12.5
2025-09-18 00:00 UT 17 00 43.4 -18 53 07 2.849 2.869 81.0 20.2 95 12.6
2025-09-19 00:00 UT 17 01 45.5 -18 56 27 2.864 2.870 80.3 20.2 95 12.6
2025-09-20 00:00 UT 17 02 48.4 -18 59 45 2.879 2.872 79.5 20.1 95 12.6
2025-09-21 00:00 UT 17 03 52.0 -19 03 02 2.894 2.873 78.8 20.1 95 12.6
2025-09-22 00:00 UT 17 04 56.5 -19 06 17 2.908 2.875 78.1 20.0 95 12.6
2025-09-23 00:00 UT 17 06 01.7 -19 09 30 2.923 2.876 77.4 19.9 95 12.6
2025-09-24 00:00 UT 17 07 07.6 -19 12 41 2.938 2.877 76.7 19.8 94 12.6
2025-09-25 00:00 UT 17 08 14.3 -19 15 51 2.953 2.879 76.0 19.8 94 12.6
2025-09-26 00:00 UT 17 09 21.7 -19 18 58 2.967 2.880 75.3 19.7 94 12.6
2025-09-27 00:00 UT 17 10 29.8 -19 22 04 2.982 2.882 74.5 19.6 94 12.6
2025-09-28 00:00 UT 17 11 38.7 -19 25 07 2.996 2.883 73.8 19.5 94 12.7
2025-09-29 00:00 UT 17 12 48.2 -19 28 08 3.011 2.884 73.1 19.4 94 12.7
2025-09-30 00:00 UT 17 13 58.4 -19 31 06 3.025 2.886 72.4 19.3 93 12.7
Terminology:
delta: distance between minor planet and earth in AU
radius: distance between minor planet and sun in AU
magn: magnitude (brightness) estimate
ra: right ascension in hours (24h = 360deg)
dec: declination in degrees
elong: elongation in degrees (angle sun-earth-minor planet)
phase: phase angle in degrees (angle sun-minor planet-earth)
AU: Astronomical Unit (mean distance between earth and sun: 149597870.7 km
Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.