(161) Athor
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	28 May 2026	14.4	2.607 AU	2.481 AU	10h21m	+14°22'	85.6°	22.8°
Opposition	12 Jul 2027	11.6	2.074 AU	1.082 AU	19h42m	-39°11'	162.4°	8.5°

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 Athor are:

            e (Eccentricity)                : 0.1376711
            a (Semimajor axis)              : 2.3799745
            i (Inclination)                 : 9.05134
            Ω (Longitude of ascending node) : 18.43670
            ω (Argument of perihelion)      : 295.41664
            M (Mean anomaly)                : 181.32449
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : -45.86725
            B (Latitude of perihelion)      : -8.16895
            P (Orbital period in years)     : 3.67            
        

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
2026-05-28 00:00 UT   10 21 22.5   +14 22 26     2.481    2.607   85.6   22.8   111   14.4 
2026-05-28 16:52 UT   10 21 56.7   +14 16 47     2.490    2.606   85.1   22.8   111   14.4 
2026-05-29 00:00 UT   10 22 11.3   +14 14 23     2.493    2.606   84.9   22.8   111   14.4 
2026-05-30 00:00 UT   10 23 01.0   +14 06 17     2.505    2.605   84.2   22.8   111   14.4 
2026-05-31 00:00 UT   10 23 51.6   +13 58 06     2.517    2.604   83.4   22.8   111   14.5 
2026-06-01 00:00 UT   10 24 43.1   +13 49 51     2.529    2.603   82.7   22.7   111   14.5 
2026-06-02 00:00 UT   10 25 35.3   +13 41 33     2.541    2.602   82.0   22.7   111   14.5 
2026-06-03 00:00 UT   10 26 28.5   +13 33 11     2.553    2.601   81.3   22.7   111   14.5 
2026-06-04 00:00 UT   10 27 22.4   +13 24 46     2.565    2.600   80.6   22.6   111   14.5 
2026-06-05 00:00 UT   10 28 17.1   +13 16 16     2.577    2.599   79.9   22.6   111   14.5 
2026-06-06 00:00 UT   10 29 12.7   +13 07 44     2.589    2.598   79.2   22.6   111   14.5 
2026-06-07 00:00 UT   10 30 09.0   +12 59 07     2.601    2.597   78.5   22.5   111   14.5 
2026-06-08 00:00 UT   10 31 06.0   +12 50 27     2.612    2.596   77.8   22.5   111   14.5 
2026-06-09 00:00 UT   10 32 03.8   +12 41 44     2.624    2.595   77.2   22.4   111   14.5 
2026-06-10 00:00 UT   10 33 02.4   +12 32 56     2.636    2.594   76.5   22.4   111   14.5 
2026-06-11 00:00 UT   10 34 01.7   +12 24 06     2.648    2.593   75.8   22.3   111   14.5 
2026-06-12 00:00 UT   10 35 01.7   +12 15 12     2.659    2.591   75.1   22.3   111   14.6 
2026-06-13 00:00 UT   10 36 02.3   +12 06 14     2.671    2.590   74.5   22.2   111   14.6 
2026-06-14 00:00 UT   10 37 03.7   +11 57 13     2.682    2.589   73.8   22.1   111   14.6 
2026-06-15 00:00 UT   10 38 05.8   +11 48 09     2.694    2.588   73.1   22.1   111   14.6 
2026-06-16 00:00 UT   10 39 08.5   +11 39 01     2.705    2.587   72.5   22.0   111   14.6 
2026-06-17 00:00 UT   10 40 11.9   +11 29 50     2.716    2.586   71.8   21.9   111   14.6 
2026-06-18 00:00 UT   10 41 15.9   +11 20 36     2.728    2.585   71.2   21.8   111   14.6 
2026-06-19 00:00 UT   10 42 20.5   +11 11 18     2.739    2.584   70.5   21.8   111   14.6 
2026-06-20 00:00 UT   10 43 25.8   +11 01 58     2.750    2.583   69.9   21.7   111   14.6 
2026-06-21 00:00 UT   10 44 31.7   +10 52 34     2.761    2.582   69.2   21.6   111   14.6 
2026-06-22 00:00 UT   10 45 38.1   +10 43 07     2.772    2.581   68.6   21.5   111   14.6 
2026-06-23 00:00 UT   10 46 45.1   +10 33 37     2.783    2.579   67.9   21.4   111   14.6 
2026-06-24 00:00 UT   10 47 52.7   +10 24 04     2.794    2.578   67.3   21.3   111   14.6 
2026-06-25 00:00 UT   10 49 00.8   +10 14 28     2.805    2.577   66.7   21.2   111   14.6 
2026-06-26 00:00 UT   10 50 09.5   +10 04 49     2.816    2.576   66.0   21.1   111   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.