(132) Aethra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	30 Oct 2026	15.1	3.609 AU	3.236 AU	21h02m	+12°15'	104.1°	15.5°
Opposition	24 Oct 2027	13.3	2.864 AU	1.949 AU	01h08m	+38°06'	151.7°	9.5°

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
2026-10-30 00:00 UT   21 02 45.5   +12 15 49     3.236    3.609  104.1   15.5    79   15.1 
2026-10-30 10:29 UT   21 02 53.2   +12 13 21     3.241    3.609  103.8   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 
2026-11-02 00:00 UT   21 03 42.4   +11 59 13     3.274    3.608  101.7   15.6    77   15.1 
2026-11-03 00:00 UT   21 04 03.4   +11 53 53     3.287    3.607  100.8   15.7    77   15.2 
2026-11-04 00:00 UT   21 04 25.5   +11 48 40     3.299    3.607  100.0   15.7    76   15.2 
2026-11-05 00:00 UT   21 04 48.6   +11 43 34     3.312    3.606   99.2   15.8    76   15.2 
2026-11-06 00:00 UT   21 05 12.7   +11 38 34     3.325    3.606   98.4   15.8    75   15.2 
2026-11-07 00:00 UT   21 05 37.8   +11 33 40     3.338    3.605   97.6   15.8    75   15.2 
2026-11-08 00:00 UT   21 06 03.8   +11 28 54     3.351    3.605   96.8   15.8    75   15.2 
2026-11-09 00:00 UT   21 06 30.8   +11 24 14     3.364    3.604   96.0   15.9    74   15.2 
2026-11-10 00:00 UT   21 06 58.8   +11 19 41     3.377    3.603   95.2   15.9    74   15.2 
2026-11-11 00:00 UT   21 07 27.8   +11 15 15     3.390    3.603   94.3   15.9    73   15.2 
2026-11-12 00:00 UT   21 07 57.6   +11 10 57     3.403    3.602   93.5   15.9    73   15.2 
2026-11-13 00:00 UT   21 08 28.4   +11 06 45     3.416    3.602   92.7   15.9    72   15.2 
2026-11-14 00:00 UT   21 09 00.1   +11 02 41     3.429    3.601   91.9   15.9    72   15.3 
2026-11-15 00:00 UT   21 09 32.7   +10 58 43     3.442    3.600   91.1   15.9    72   15.3 
2026-11-16 00:00 UT   21 10 06.1   +10 54 53     3.455    3.600   90.3   15.9    71   15.3 
2026-11-17 00:00 UT   21 10 40.4   +10 51 11     3.468    3.599   89.5   15.9    71   15.3 
2026-11-18 00:00 UT   21 11 15.6   +10 47 35     3.482    3.598   88.8   15.9    70   15.3 
2026-11-19 00:00 UT   21 11 51.6   +10 44 07     3.495    3.598   88.0   15.9    70   15.3 
2026-11-20 00:00 UT   21 12 28.4   +10 40 46     3.508    3.597   87.2   15.9    69   15.3 
2026-11-21 00:00 UT   21 13 06.1   +10 37 32     3.521    3.596   86.4   15.9    69   15.3 
2026-11-22 00:00 UT   21 13 44.5   +10 34 26     3.534    3.596   85.6   15.9    69   15.3 
2026-11-23 00:00 UT   21 14 23.8   +10 31 27     3.547    3.595   84.8   15.9    68   15.3 
2026-11-24 00:00 UT   21 15 03.8   +10 28 35     3.560    3.594   84.1   15.9    68   15.3 
2026-11-25 00:00 UT   21 15 44.5   +10 25 51     3.573    3.594   83.3   15.8    68   15.3 
2026-11-26 00:00 UT   21 16 26.1   +10 23 14     3.586    3.593   82.5   15.8    67   15.3 
2026-11-27 00:00 UT   21 17 08.3   +10 20 44     3.599    3.592   81.7   15.8    67   15.3 
2026-11-28 00:00 UT   21 17 51.3   +10 18 22     3.612    3.591   81.0   15.7    66   15.4 
2026-11-29 00:00 UT   21 18 35.0   +10 16 06     3.625    3.591   80.2   15.7    66   15.4 

    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.