(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	2 Oct 2026	14.8	3.620 AU	2.925 AU	21h02m	+15°25'	127.2°	12.7°

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
2026-10-02 00:00 UT   21 02 09.9   +15 25 40     2.925    3.620  127.2   12.7    98   14.8 
2026-10-02 09:21 UT   21 02 03.9   +15 22 46     2.929    3.620  126.9   12.8    97   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 
2026-10-05 00:00 UT   21 01 28.4   +15 03 24     2.953    3.619  124.8   13.1    95   14.8 
2026-10-06 00:00 UT   21 01 17.0   +14 56 01     2.963    3.619  124.0   13.2    94   14.9 
2026-10-07 00:00 UT   21 01 06.9   +14 48 39     2.973    3.618  123.2   13.4    93   14.9 
2026-10-08 00:00 UT   21 00 58.0   +14 41 20     2.983    3.618  122.4   13.5    93   14.9 
2026-10-09 00:00 UT   21 00 50.3   +14 34 02     2.993    3.618  121.6   13.6    92   14.9 
2026-10-10 00:00 UT   21 00 43.9   +14 26 47     3.004    3.617  120.7   13.7    91   14.9 
2026-10-11 00:00 UT   21 00 38.7   +14 19 35     3.014    3.617  119.9   13.8    90   14.9 
2026-10-12 00:00 UT   21 00 34.7   +14 12 26     3.025    3.617  119.1   14.0    90   14.9 
2026-10-13 00:00 UT   21 00 31.9   +14 05 20     3.036    3.616  118.2   14.1    89   14.9 
2026-10-14 00:00 UT   21 00 30.4   +13 58 17     3.047    3.616  117.4   14.2    88   14.9 
2026-10-15 00:00 UT   21 00 30.1   +13 51 18     3.058    3.616  116.6   14.3    88   15.0 
2026-10-16 00:00 UT   21 00 31.0   +13 44 23     3.069    3.615  115.8   14.4    87   15.0 
2026-10-17 00:00 UT   21 00 33.1   +13 37 31     3.080    3.615  114.9   14.5    86   15.0 
2026-10-18 00:00 UT   21 00 36.4   +13 30 44     3.092    3.615  114.1   14.6    86   15.0 
2026-10-19 00:00 UT   21 00 40.9   +13 24 02     3.103    3.614  113.3   14.7    85   15.0 
2026-10-20 00:00 UT   21 00 46.5   +13 17 24     3.115    3.614  112.4   14.8    84   15.0 
2026-10-21 00:00 UT   21 00 53.3   +13 10 51     3.126    3.613  111.6   14.8    84   15.0 
2026-10-22 00:00 UT   21 01 01.3   +13 04 22     3.138    3.613  110.8   14.9    83   15.0 
2026-10-23 00:00 UT   21 01 10.4   +12 57 59     3.150    3.613  109.9   15.0    83   15.0 
2026-10-24 00:00 UT   21 01 20.7   +12 51 41     3.162    3.612  109.1   15.1    82   15.1 
2026-10-25 00:00 UT   21 01 32.1   +12 45 28     3.174    3.612  108.3   15.2    82   15.1 
2026-10-26 00:00 UT   21 01 44.6   +12 39 21     3.186    3.611  107.4   15.2    81   15.1 
2026-10-27 00:00 UT   21 01 58.2   +12 33 19     3.199    3.611  106.6   15.3    80   15.1 
2026-10-28 00:00 UT   21 02 12.9   +12 27 24     3.211    3.610  105.8   15.4    80   15.1 
2026-10-29 00:00 UT   21 02 28.7   +12 21 33     3.224    3.610  105.0   15.4    79   15.1 
2026-10-30 00:00 UT   21 02 45.5   +12 15 49     3.236    3.609  104.1   15.5    79   15.1 
2026-10-31 00:00 UT   21 03 03.4   +12 10 11     3.249    3.609  103.3   15.5    78   15.1 
2026-11-01 00:00 UT   21 03 22.4   +12 04 39     3.261    3.608  102.5   15.6    78   15.1 

    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.