(161) Athor
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 Jul 2026	14.7	2.541 AU	3.095 AU	11h26m	+05°05'	48.6°	17.5°
Opposition	12 Jul 2027	11.6	2.072 AU	1.080 AU	19h42m	-39°10'	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)                : 0.1380661
            a (Semimajor axis)              : 2.3791190
            i (Inclination)                 : 9.05356
            Ω (Longitude of ascending node) : 18.42090
            ω (Argument of perihelion)      : 295.48466
            M (Mean anomaly)                : 234.97919
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : -45.81435
            B (Latitude of perihelion)      : -8.16631
            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
2026-07-25 00:00 UT   11 26 41.8   +05 05 34     3.095    2.541   48.6   17.5   112   14.7 
2026-07-25 18:23 UT   11 27 44.2   +04 57 12     3.102    2.540   48.2   17.3   112   14.7 
2026-07-26 00:00 UT   11 28 03.4   +04 54 38     3.104    2.540   48.1   17.3   112   14.7 
2026-07-27 00:00 UT   11 29 25.3   +04 43 41     3.112    2.539   47.5   17.1   112   14.7 
2026-07-28 00:00 UT   11 30 47.6   +04 32 42     3.120    2.537   46.9   17.0   112   14.7 
2026-07-29 00:00 UT   11 32 10.2   +04 21 40     3.128    2.536   46.3   16.8   112   14.7 
2026-07-30 00:00 UT   11 33 33.1   +04 10 37     3.136    2.535   45.8   16.7   112   14.7 
2026-07-31 00:00 UT   11 34 56.3   +03 59 32     3.144    2.534   45.2   16.5   112   14.7 
2026-08-01 00:00 UT   11 36 19.9   +03 48 25     3.152    2.532   44.7   16.4   112   14.7 
2026-08-02 00:00 UT   11 37 43.8   +03 37 16     3.159    2.531   44.1   16.2   112   14.7 
2026-08-03 00:00 UT   11 39 08.0   +03 26 05     3.167    2.530   43.5   16.0   112   14.7 
2026-08-04 00:00 UT   11 40 32.5   +03 14 52     3.174    2.528   43.0   15.9   112   14.7 
2026-08-05 00:00 UT   11 41 57.3   +03 03 38     3.182    2.527   42.4   15.7   112   14.7 
2026-08-06 00:00 UT   11 43 22.4   +02 52 21     3.189    2.526   41.9   15.5   112   14.7 
2026-08-07 00:00 UT   11 44 47.9   +02 41 03     3.196    2.524   41.3   15.4   112   14.7 
2026-08-08 00:00 UT   11 46 13.6   +02 29 43     3.203    2.523   40.7   15.2   112   14.7 
2026-08-09 00:00 UT   11 47 39.7   +02 18 22     3.210    2.522   40.2   15.0   112   14.7 
2026-08-10 00:00 UT   11 49 06.0   +02 06 59     3.217    2.521   39.6   14.9   112   14.7 
2026-08-11 00:00 UT   11 50 32.7   +01 55 34     3.224    2.519   39.1   14.7   112   14.7 
2026-08-12 00:00 UT   11 51 59.6   +01 44 07     3.230    2.518   38.5   14.5   112   14.6 
2026-08-13 00:00 UT   11 53 26.9   +01 32 39     3.237    2.517   38.0   14.3   112   14.6 
2026-08-14 00:00 UT   11 54 54.4   +01 21 09     3.243    2.515   37.4   14.2   112   14.6 
2026-08-15 00:00 UT   11 56 22.2   +01 09 38     3.250    2.514   36.9   14.0   112   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.