(132) Aethra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	24 Aug 2026	14.5	3.623 AU	2.730 AU	21h25m	+19°27'	147.3°	8.7°
Today	4 Sep 2026	14.5	3.623 AU	2.749 AU	21h16m	+18°38'	145.2°	9.1°

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 Aethra are:

            e (Eccentricity)                : 0.3871142
            a (Semimajor axis)              : 2.6120027
            i (Inclination)                 : 24.98149
            Ω (Longitude of ascending node) : 258.04375
            ω (Argument of perihelion)      : 255.63288
            M (Mean anomaly)                : 159.73249
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 332.26442
            B (Latitude of perihelion)      : -24.14941
            P (Orbital period in years)     : 4.22            
        

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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-09-04 00:00 UT   21 16 54.2   +18 38 06     2.749    3.623  145.2    9.1   136   14.5 
2026-09-04 06:57 UT   21 16 41.1   +18 36 29     2.750    3.623  145.1    9.2   136   14.5 
2026-09-05 00:00 UT   21 16 09.3   +18 32 28     2.752    3.623  144.9    9.2   134   14.5 
2026-09-06 00:00 UT   21 15 25.2   +18 26 42     2.755    3.623  144.4    9.3   133   14.6 
2026-09-07 00:00 UT   21 14 41.9   +18 20 47     2.759    3.623  144.0    9.4   131   14.6 
2026-09-08 00:00 UT   21 13 59.4   +18 14 44     2.763    3.623  143.5    9.5   129   14.6 
2026-09-09 00:00 UT   21 13 17.8   +18 08 34     2.767    3.623  143.0    9.6   127   14.6 
2026-09-10 00:00 UT   21 12 37.0   +18 02 17     2.771    3.623  142.5    9.7   125   14.6 
2026-09-11 00:00 UT   21 11 57.2   +17 55 53     2.776    3.623  142.0    9.9   124   14.6 
2026-09-12 00:00 UT   21 11 18.3   +17 49 22     2.781    3.623  141.4   10.0   122   14.6 
2026-09-13 00:00 UT   21 10 40.5   +17 42 45     2.786    3.623  140.8   10.1   121   14.6 
2026-09-14 00:00 UT   21 10 03.6   +17 36 03     2.792    3.623  140.3   10.2   119   14.6 
2026-09-15 00:00 UT   21 09 27.7   +17 29 15     2.797    3.623  139.6   10.4   118   14.6 
2026-09-16 00:00 UT   21 08 52.9   +17 22 22     2.803    3.622  139.0   10.5   116   14.6 
2026-09-17 00:00 UT   21 08 19.1   +17 15 25     2.809    3.622  138.3   10.6   115   14.6 
2026-09-18 00:00 UT   21 07 46.5   +17 08 23     2.815    3.622  137.7   10.8   113   14.7 
2026-09-19 00:00 UT   21 07 14.9   +17 01 17     2.822    3.622  137.0   10.9   112   14.7 
2026-09-20 00:00 UT   21 06 44.4   +16 54 08     2.829    3.622  136.3   11.0   111   14.7 
2026-09-21 00:00 UT   21 06 15.1   +16 46 56     2.836    3.622  135.6   11.2   109   14.7 
2026-09-22 00:00 UT   21 05 46.9   +16 39 40     2.843    3.622  134.9   11.3   108   14.7 
2026-09-23 00:00 UT   21 05 19.9   +16 32 22     2.850    3.622  134.2   11.5   107   14.7 
2026-09-24 00:00 UT   21 04 54.0   +16 25 02     2.858    3.621  133.4   11.6   106   14.7 
2026-09-25 00:00 UT   21 04 29.3   +16 17 40     2.865    3.621  132.7   11.8   105   14.7 
2026-09-26 00:00 UT   21 04 05.8   +16 10 17     2.873    3.621  131.9   11.9   104   14.7 
2026-09-27 00:00 UT   21 03 43.4   +16 02 52     2.882    3.621  131.2   12.0   103   14.8 
2026-09-28 00:00 UT   21 03 22.3   +15 55 26     2.890    3.621  130.4   12.2   102   14.8 
2026-09-29 00:00 UT   21 03 02.4   +15 47 60     2.898    3.620  129.6   12.3   101   14.8 
2026-09-30 00:00 UT   21 02 43.7   +15 40 33     2.907    3.620  128.8   12.4   100   14.8 
2026-10-01 00:00 UT   21 02 26.2   +15 33 06     2.916    3.620  128.0   12.6    99   14.8 
2026-10-02 00:00 UT   21 02 09.9   +15 25 40     2.925    3.620  127.2   12.7    98   14.8 
2026-10-03 00:00 UT   21 01 54.8   +15 18 13     2.934    3.619  126.4   12.9    97   14.8 
2026-10-04 00:00 UT   21 01 41.0   +15 10 48     2.944    3.619  125.6   13.0    96   14.8 

    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.