(161) Athor
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 Apr 2024	14.1	2.102 AU	2.899 AU	00h19m	-01°20'	31.1°	14.3°
Opposition	12 Nov 2024	12.3	2.376 AU	1.393 AU	03h02m	+25°47'	171.8°	3.4°

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)                : 0.1367832
            a (Semimajor axis)              : 2.3795833
            i (Inclination)                 : 9.05753
            Ω (Longitude of ascending node) : 18.54957
            ω (Argument of perihelion)      : 294.90075
            M (Mean anomaly)                : 327.06634
            Epoch                           : 2023 Sep 13

            L (Longitude of perihelion)     : -46.27401
            B (Latitude of perihelion)      : -8.20941
            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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2024-04-25 00:00 UT   00 19 44.8   -01 20 10     2.899    2.102   31.1   14.3   241   14.1 
2024-04-25 20:51 UT   00 21 22.9   -01 08 01     2.894    2.103   31.5   14.5   241   14.1 
2024-04-26 00:00 UT   00 21 37.7   -01 06 10     2.894    2.103   31.5   14.5   241   14.1 
2024-04-27 00:00 UT   00 23 30.3   +00 52 12     2.889    2.104   32.0   14.7   242   14.1 
2024-04-28 00:00 UT   00 25 22.8   +00 38 15     2.884    2.105   32.4   14.9   242   14.1 
2024-04-29 00:00 UT   00 27 15.0   +00 24 20     2.880    2.106   32.9   15.0   242   14.1 
2024-04-30 00:00 UT   00 29 07.0   +00 10 27     2.875    2.107   33.3   15.2   242   14.1 
2024-05-01 00:00 UT   00 30 58.8   +00 03 25     2.870    2.108   33.8   15.4   242   14.1 
2024-05-02 00:00 UT   00 32 50.3   +00 17 14     2.865    2.109   34.2   15.6   242   14.1 
2024-05-03 00:00 UT   00 34 41.7   +00 31 02     2.860    2.110   34.7   15.8   243   14.1 
2024-05-04 00:00 UT   00 36 32.8   +00 44 47     2.854    2.111   35.1   15.9   243   14.1 
2024-05-05 00:00 UT   00 38 23.8   +00 58 31     2.849    2.112   35.6   16.1   243   14.1 
2024-05-06 00:00 UT   00 40 14.5   +01 12 12     2.844    2.113   36.0   16.3   243   14.1 
2024-05-07 00:00 UT   00 42 05.0   +01 25 51     2.838    2.114   36.5   16.5   243   14.1 
2024-05-08 00:00 UT   00 43 55.2   +01 39 28     2.833    2.115   36.9   16.7   243   14.1 
2024-05-09 00:00 UT   00 45 45.3   +01 53 02     2.827    2.116   37.4   16.8   243   14.1 
2024-05-10 00:00 UT   00 47 35.1   +02 06 35     2.822    2.117   37.8   17.0   244   14.1 
2024-05-11 00:00 UT   00 49 24.7   +02 20 04     2.816    2.118   38.3   17.2   244   14.1 

    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.