(132) Aethra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	10 Jul 2026	14.9	3.610 AU	2.959 AU	22h00m	+18°40'	122.6°	13.7°
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)                : 0.3871142
            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
2026-07-10 00:00 UT   22 00 03.5   +18 40 37     2.959    3.610  122.6   13.7   226   14.9 
2026-07-10 05:00 UT   21 59 57.4   +18 41 45     2.957    3.610  122.8   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 
2026-07-13 00:00 UT   21 58 31.0   +18 56 26     2.931    3.611  125.0   13.3   224   14.8 
2026-07-14 00:00 UT   21 57 58.1   +19 01 22     2.922    3.611  125.8   13.2   223   14.8 
2026-07-15 00:00 UT   21 57 24.2   +19 06 08     2.913    3.612  126.6   13.1   222   14.8 
2026-07-16 00:00 UT   21 56 49.3   +19 10 44     2.904    3.612  127.3   12.9   221   14.8 
2026-07-17 00:00 UT   21 56 13.4   +19 15 08     2.896    3.613  128.1   12.8   220   14.8 
2026-07-18 00:00 UT   21 55 36.6   +19 19 22     2.887    3.613  128.9   12.6   219   14.8 
2026-07-19 00:00 UT   21 54 58.8   +19 23 24     2.879    3.614  129.7   12.5   218   14.8 
2026-07-20 00:00 UT   21 54 20.1   +19 27 16     2.871    3.614  130.4   12.4   217   14.8 
2026-07-21 00:00 UT   21 53 40.4   +19 30 55     2.863    3.614  131.2   12.2   216   14.8 
2026-07-22 00:00 UT   21 52 60.0   +19 34 23     2.856    3.615  132.0   12.1   215   14.7 
2026-07-23 00:00 UT   21 52 18.6   +19 37 39     2.848    3.615  132.7   11.9   214   14.7 
2026-07-24 00:00 UT   21 51 36.5   +19 40 44     2.841    3.616  133.4   11.8   213   14.7 
2026-07-25 00:00 UT   21 50 53.5   +19 43 36     2.834    3.616  134.2   11.6   212   14.7 
2026-07-26 00:00 UT   21 50 09.7   +19 46 16     2.827    3.616  134.9   11.5   211   14.7 
2026-07-27 00:00 UT   21 49 25.2   +19 48 44     2.821    3.617  135.6   11.3   209   14.7 
2026-07-28 00:00 UT   21 48 40.0   +19 50 59     2.814    3.617  136.3   11.2   208   14.7 
2026-07-29 00:00 UT   21 47 54.1   +19 53 01     2.808    3.617  137.0   11.0   207   14.7 
2026-07-30 00:00 UT   21 47 07.5   +19 54 51     2.802    3.618  137.6   10.9   206   14.7 
2026-07-31 00:00 UT   21 46 20.3   +19 56 28     2.796    3.618  138.3   10.8   204   14.7 
2026-08-01 00:00 UT   21 45 32.5   +19 57 52     2.791    3.618  138.9   10.6   203   14.6 
2026-08-02 00:00 UT   21 44 44.1   +19 59 03     2.786    3.618  139.6   10.5   201   14.6 
2026-08-03 00:00 UT   21 43 55.1   +20 00 01     2.781    3.619  140.2   10.3   200   14.6 
2026-08-04 00:00 UT   21 43 05.7   +20 00 46     2.776    3.619  140.8   10.2   198   14.6 
2026-08-05 00:00 UT   21 42 15.7   +20 01 17     2.771    3.619  141.4   10.1   197   14.6 
2026-08-06 00:00 UT   21 41 25.3   +20 01 35     2.767    3.620  141.9   10.0   195   14.6 
2026-08-07 00:00 UT   21 40 34.6   +20 01 40     2.763    3.620  142.5    9.8   193   14.6 
2026-08-08 00:00 UT   21 39 43.4   +20 01 31     2.759    3.620  143.0    9.7   192   14.6 
2026-08-09 00:00 UT   21 38 51.9   +20 01 09     2.755    3.620  143.5    9.6   190   14.6 

    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.