(161) Athor
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Aug 2026	14.6	2.505 AU	3.291 AU	12h06m	-00°11'	33.1°	12.7°
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
2026-08-22 00:00 UT   12 06 44.7   +00 11 37     3.291    2.505   33.1   12.7   113   14.6 
2026-08-22 19:09 UT   12 07 56.5   +00 20 57     3.295    2.504   32.6   12.6   113   14.6 
2026-08-23 00:00 UT   12 08 14.7   +00 23 19     3.296    2.503   32.5   12.5   113   14.6 
2026-08-24 00:00 UT   12 09 44.9   +00 35 01     3.302    2.502   32.0   12.4   113   14.6 
2026-08-25 00:00 UT   12 11 15.4   +00 46 45     3.307    2.501   31.4   12.2   113   14.6 
2026-08-26 00:00 UT   12 12 46.2   +00 58 29     3.312    2.499   30.9   12.0   113   14.6 
2026-08-27 00:00 UT   12 14 17.3   -01 10 15     3.317    2.498   30.4   11.8   113   14.6 
2026-08-28 00:00 UT   12 15 48.6   -01 22 02     3.322    2.496   29.8   11.6   113   14.6 
2026-08-29 00:00 UT   12 17 20.1   -01 33 49     3.327    2.495   29.3   11.4   113   14.6 
2026-08-30 00:00 UT   12 18 52.0   -01 45 38     3.331    2.494   28.7   11.2   113   14.6 
2026-08-31 00:00 UT   12 20 24.0   -01 57 27     3.336    2.492   28.2   11.0   113   14.6 
2026-09-01 00:00 UT   12 21 56.4   -02 09 17     3.340    2.491   27.7   10.8   113   14.6 
2026-09-02 00:00 UT   12 23 29.0   -02 21 08     3.345    2.490   27.1   10.7   113   14.6 
2026-09-03 00:00 UT   12 25 01.8   -02 33 00     3.349    2.488   26.6   10.5   113   14.5 
2026-09-04 00:00 UT   12 26 35.0   -02 44 53     3.353    2.487   26.1   10.3   113   14.5 
2026-09-05 00:00 UT   12 28 08.3   -02 56 46     3.357    2.485   25.5   10.1   113   14.5 
2026-09-06 00:00 UT   12 29 42.0   -03 08 40     3.361    2.484   25.0    9.9   113   14.5 
2026-09-07 00:00 UT   12 31 15.9   -03 20 35     3.365    2.483   24.5    9.7   113   14.5 
2026-09-08 00:00 UT   12 32 50.1   -03 32 30     3.368    2.481   23.9    9.5   113   14.5 
2026-09-09 00:00 UT   12 34 24.5   -03 44 26     3.372    2.480   23.4    9.3   113   14.5 
2026-09-10 00:00 UT   12 35 59.2   -03 56 23     3.375    2.478   22.9    9.1   113   14.5 

    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.