(132) Aethra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	14 Mar 2026	15.4	3.491 AU	4.244 AU	21h10m	+01°11'	36.2°	9.7°
Opposition	24 Aug 2026	14.5	3.623 AU	2.730 AU	21h25m	+19°27'	147.3°	8.7°

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)                : 0.3870077
            a (Semimajor axis)              : 2.6120811
            i (Inclination)                 : 24.98355
            Ω (Longitude of ascending node) : 258.05085
            ω (Argument of perihelion)      : 255.61885
            M (Mean anomaly)                : 113.06116
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 332.25599
            B (Latitude of perihelion)      : -24.14978
            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
2026-03-14 00:00 UT   21 10 39.2   +01 11 41     4.244    3.491   36.2    9.7   276   15.4 
2026-03-14 01:30 UT   21 10 43.1   +01 12 13     4.244    3.491   36.2    9.7   276   15.4 
2026-03-15 00:00 UT   21 11 41.5   +01 20 21     4.238    3.493   36.8    9.8   276   15.5 
2026-03-16 00:00 UT   21 12 43.4   +01 29 03     4.231    3.494   37.4   10.0   275   15.5 
2026-03-17 00:00 UT   21 13 44.9   +01 37 47     4.225    3.496   38.1   10.1   275   15.5 
2026-03-18 00:00 UT   21 14 46.0   +01 46 33     4.218    3.497   38.7   10.2   274   15.5 
2026-03-19 00:00 UT   21 15 46.8   +01 55 22     4.211    3.499   39.3   10.4   274   15.5 
2026-03-20 00:00 UT   21 16 47.1   +02 04 13     4.204    3.500   40.0   10.5   273   15.5 
2026-03-21 00:00 UT   21 17 47.1   +02 13 06     4.197    3.501   40.6   10.7   273   15.5 
2026-03-22 00:00 UT   21 18 46.6   +02 22 01     4.190    3.503   41.3   10.8   272   15.5 
2026-03-23 00:00 UT   21 19 45.7   +02 30 58     4.182    3.504   41.9   11.0   272   15.5 
2026-03-24 00:00 UT   21 20 44.4   +02 39 58     4.175    3.506   42.6   11.1   271   15.5 
2026-03-25 00:00 UT   21 21 42.7   +02 48 59     4.167    3.507   43.2   11.2   271   15.5 
2026-03-26 00:00 UT   21 22 40.6   +02 58 02     4.159    3.509   43.9   11.4   270   15.5 
2026-03-27 00:00 UT   21 23 38.0   +03 07 07     4.151    3.510   44.5   11.5   270   15.5 
2026-03-28 00:00 UT   21 24 34.9   +03 16 14     4.143    3.511   45.2   11.6   269   15.5 
2026-03-29 00:00 UT   21 25 31.5   +03 25 22     4.134    3.513   45.8   11.8   269   15.5 
2026-03-30 00:00 UT   21 26 27.6   +03 34 33     4.126    3.514   46.5   11.9   269   15.5 
2026-03-31 00:00 UT   21 27 23.2   +03 43 45     4.118    3.516   47.2   12.0   268   15.5 
2026-04-01 00:00 UT   21 28 18.4   +03 52 59     4.109    3.517   47.8   12.2   268   15.5 
2026-04-02 00:00 UT   21 29 13.1   +04 02 14     4.100    3.518   48.5   12.3   267   15.5 
2026-04-03 00:00 UT   21 30 07.3   +04 11 32     4.091    3.520   49.2   12.4   267   15.5 
2026-04-04 00:00 UT   21 31 01.1   +04 20 51     4.082    3.521   49.8   12.5   267   15.5 
2026-04-05 00:00 UT   21 31 54.4   +04 30 11     4.073    3.522   50.5   12.7   266   15.5 
2026-04-06 00:00 UT   21 32 47.2   +04 39 33     4.064    3.524   51.2   12.8   266   15.5 
2026-04-07 00:00 UT   21 33 39.5   +04 48 57     4.054    3.525   51.8   12.9   265   15.5 
2026-04-08 00:00 UT   21 34 31.3   +04 58 22     4.045    3.526   52.5   13.0   265   15.5 
2026-04-09 00:00 UT   21 35 22.6   +05 07 48     4.035    3.528   53.2   13.1   265   15.5 
2026-04-10 00:00 UT   21 36 13.4   +05 17 16     4.025    3.529   53.9   13.3   264   15.5 
2026-04-11 00:00 UT   21 37 03.7   +05 26 45     4.016    3.530   54.6   13.4   264   15.5 
2026-04-12 00:00 UT   21 37 53.4   +05 36 16     4.006    3.531   55.2   13.5   264   15.5 
2026-04-13 00:00 UT   21 38 42.6   +05 45 48     3.996    3.533   55.9   13.6   263   15.5 

    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.