(161) Athor
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	23 Feb 2026	12.9	2.680 AU	1.700 AU	10h42m	+18°54'	170.1°	3.7°
Today	27 Feb 2026	12.9	2.678 AU	1.699 AU	10h38m	+19°08'	169.4°	3.9°

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
2026-02-27 00:00 UT   10 38 37.1   +19 08 03     1.699    2.678  169.4    3.9   180   12.9 
2026-02-27 12:32 UT   10 38 03.5   +19 09 53     1.699    2.678  169.2    4.0   176   13.0 
2026-02-28 00:00 UT   10 37 32.8   +19 11 32     1.699    2.678  168.9    4.1   174   13.0 
2026-03-01 00:00 UT   10 36 28.6   +19 14 52     1.700    2.677  168.3    4.3   168   13.0 
2026-03-02 00:00 UT   10 35 24.5   +19 18 04     1.700    2.677  167.6    4.6   163   13.0 
2026-03-03 00:00 UT   10 34 20.6   +19 21 07     1.701    2.676  166.8    4.8   158   13.0 
2026-03-04 00:00 UT   10 33 16.9   +19 24 01     1.703    2.676  166.0    5.2   154   13.0 
2026-03-05 00:00 UT   10 32 13.6   +19 26 46     1.705    2.675  165.1    5.5   151   13.0 
2026-03-06 00:00 UT   10 31 10.7   +19 29 22     1.706    2.674  164.1    5.8   148   13.1 
2026-03-07 00:00 UT   10 30 08.2   +19 31 47     1.709    2.674  163.1    6.2   145   13.1 
2026-03-08 00:00 UT   10 29 06.3   +19 34 04     1.711    2.673  162.1    6.5   143   13.1 
2026-03-09 00:00 UT   10 28 05.0   +19 36 10     1.714    2.673  161.1    6.9   140   13.1 
2026-03-10 00:00 UT   10 27 04.4   +19 38 06     1.717    2.672  160.0    7.3   138   13.1 
2026-03-11 00:00 UT   10 26 04.5   +19 39 51     1.720    2.671  159.0    7.7   137   13.2 
2026-03-12 00:00 UT   10 25 05.4   +19 41 27     1.724    2.671  157.9    8.1   135   13.2 
2026-03-13 00:00 UT   10 24 07.2   +19 42 51     1.728    2.670  156.8    8.4   133   13.2 
2026-03-14 00:00 UT   10 23 09.9   +19 44 05     1.732    2.669  155.7    8.8   132   13.2 
2026-03-15 00:00 UT   10 22 13.6   +19 45 09     1.736    2.669  154.6    9.2   131   13.2 
2026-03-16 00:00 UT   10 21 18.3   +19 46 01     1.741    2.668  153.5    9.6   130   13.3 
2026-03-17 00:00 UT   10 20 24.2   +19 46 43     1.746    2.667  152.4   10.0   129   13.3 
2026-03-18 00:00 UT   10 19 31.2   +19 47 13     1.751    2.667  151.3   10.3   128   13.3 
2026-03-19 00:00 UT   10 18 39.4   +19 47 33     1.756    2.666  150.1   10.7   127   13.3 
2026-03-20 00:00 UT   10 17 48.9   +19 47 42     1.762    2.665  149.0   11.1   126   13.3 
2026-03-21 00:00 UT   10 16 59.7   +19 47 39     1.768    2.665  147.9   11.5   125   13.4 
2026-03-22 00:00 UT   10 16 11.9   +19 47 26     1.774    2.664  146.8   11.8   124   13.4 
2026-03-23 00:00 UT   10 15 25.4   +19 47 02     1.780    2.663  145.7   12.2   124   13.4 
2026-03-24 00:00 UT   10 14 40.4   +19 46 27     1.787    2.663  144.6   12.5   123   13.4 
2026-03-25 00:00 UT   10 13 56.9   +19 45 42     1.794    2.662  143.5   12.9   122   13.5 
2026-03-26 00:00 UT   10 13 14.8   +19 44 46     1.800    2.661  142.4   13.2   122   13.5 
2026-03-27 00:00 UT   10 12 34.3   +19 43 39     1.808    2.661  141.3   13.6   121   13.5 
2026-03-28 00:00 UT   10 11 55.4   +19 42 22     1.815    2.660  140.2   13.9   121   13.5 
2026-03-29 00:00 UT   10 11 18.0   +19 40 54     1.823    2.659  139.2   14.2   120   13.5 

    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.