(132) Aethra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	12 Jun 2026	15.2	3.592 AU	3.273 AU	22h06m	+15°16'	100.0°	16.2°
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)                : 0.3871142
            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
2026-06-12 00:00 UT   22 06 31.9   +15 16 37     3.273    3.592  100.0   16.2   243   15.2 
2026-06-12 01:45 UT   22 06 32.0   +15 17 15     3.273    3.593  100.1   16.2   242   15.2 
2026-06-13 00:00 UT   22 06 32.9   +15 25 13     3.261    3.593  100.8   16.1   242   15.2 
2026-06-14 00:00 UT   22 06 32.7   +15 33 45     3.249    3.594  101.6   16.1   242   15.2 
2026-06-15 00:00 UT   22 06 31.5   +15 42 12     3.237    3.595  102.4   16.0   241   15.1 
2026-06-16 00:00 UT   22 06 29.2   +15 50 35     3.224    3.595  103.2   16.0   241   15.1 
2026-06-17 00:00 UT   22 06 25.8   +15 58 53     3.212    3.596  104.0   15.9   240   15.1 
2026-06-18 00:00 UT   22 06 21.3   +16 07 06     3.200    3.597  104.8   15.8   240   15.1 
2026-06-19 00:00 UT   22 06 15.8   +16 15 13     3.188    3.597  105.6   15.8   239   15.1 
2026-06-20 00:00 UT   22 06 09.1   +16 23 16     3.176    3.598  106.4   15.7   239   15.1 
2026-06-21 00:00 UT   22 06 01.3   +16 31 13     3.164    3.599  107.2   15.6   238   15.1 
2026-06-22 00:00 UT   22 05 52.5   +16 39 04     3.153    3.599  108.0   15.6   238   15.1 
2026-06-23 00:00 UT   22 05 42.5   +16 46 49     3.141    3.600  108.8   15.5   237   15.1 
2026-06-24 00:00 UT   22 05 31.4   +16 54 28     3.129    3.601  109.6   15.4   237   15.1 
2026-06-25 00:00 UT   22 05 19.2   +17 02 01     3.118    3.601  110.5   15.3   236   15.0 
2026-06-26 00:00 UT   22 05 05.9   +17 09 27     3.106    3.602  111.3   15.2   236   15.0 
2026-06-27 00:00 UT   22 04 51.5   +17 16 47     3.095    3.602  112.1   15.2   235   15.0 
2026-06-28 00:00 UT   22 04 36.0   +17 24 01     3.084    3.603  112.9   15.1   234   15.0 
2026-06-29 00:00 UT   22 04 19.3   +17 31 07     3.073    3.604  113.7   15.0   234   15.0 
2026-06-30 00:00 UT   22 04 01.6   +17 38 06     3.062    3.604  114.5   14.9   233   15.0 
2026-07-01 00:00 UT   22 03 42.7   +17 44 57     3.051    3.605  115.3   14.8   233   15.0 
2026-07-02 00:00 UT   22 03 22.8   +17 51 42     3.040    3.605  116.1   14.7   232   15.0 
2026-07-03 00:00 UT   22 03 01.7   +17 58 18     3.030    3.606  116.9   14.6   231   15.0 
2026-07-04 00:00 UT   22 02 39.5   +18 04 46     3.019    3.606  117.7   14.4   231   14.9 
2026-07-05 00:00 UT   22 02 16.3   +18 11 06     3.009    3.607  118.6   14.3   230   14.9 
2026-07-06 00:00 UT   22 01 51.9   +18 17 18     2.999    3.608  119.4   14.2   229   14.9 
2026-07-07 00:00 UT   22 01 26.4   +18 23 21     2.988    3.608  120.2   14.1   229   14.9 
2026-07-08 00:00 UT   22 00 59.9   +18 29 16     2.978    3.609  121.0   14.0   228   14.9 
2026-07-09 00:00 UT   22 00 32.2   +18 35 01     2.969    3.609  121.8   13.9   227   14.9 
2026-07-10 00:00 UT   22 00 03.5   +18 40 37     2.959    3.610  122.6   13.7   226   14.9 
2026-07-11 00:00 UT   21 59 33.7   +18 46 03     2.949    3.610  123.4   13.6   225   14.9 
2026-07-12 00:00 UT   21 59 02.9   +18 51 19     2.940    3.611  124.2   13.5   225   14.9 

    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.