(230) Athamantis
ephemeris date magn radius delta ra dec elong phase
Today21 May 202412.32.521 AU2.172 AU10h25m-00°11'98.0°23.4°
Opposition2 Jul 202510.52.391 AU1.386 AU18h47m-12°03'169.0°4.6°
(230) Athamantis - 2024-05-21
astro.vanbuitenen.nl


 
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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 Athamantis are:

            e (Eccentricity)                : 0.0614842
            a (Semimajor axis)              : 2.3819901
            i (Inclination)                 : 9.45532
            Ω (Longitude of ascending node) : 239.77227
            ω (Argument of perihelion)      : 139.02836
            M (Mean anomaly)                : 146.89470
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 199.18826
            B (Latitude of perihelion)      : 6.18361
            P (Orbital period in years)     : 3.68            
        

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
2024-05-21 00:00 UT   10 25 39.4   +00 11 05     2.172    2.521   98.0   23.4   110   12.3 
2024-05-21 10:39 UT   10 26 01.2   +00 11 01     2.178    2.521   97.7   23.4   110   12.3 
2024-05-22 00:00 UT   10 26 28.8   +00 10 59     2.185    2.521   97.3   23.5   111   12.4 
2024-05-23 00:00 UT   10 27 19.1   +00 11 01     2.197    2.521   96.5   23.5   111   12.4 
2024-05-24 00:00 UT   10 28 10.5   +00 11 12     2.210    2.522   95.8   23.5   111   12.4 
2024-05-25 00:00 UT   10 29 02.8   +00 11 32     2.222    2.522   95.0   23.6   111   12.4 
2024-05-26 00:00 UT   10 29 56.0   +00 12 00     2.235    2.522   94.3   23.6   111   12.4 
2024-05-27 00:00 UT   10 30 50.2   +00 12 37     2.248    2.522   93.6   23.6   111   12.4 
2024-05-28 00:00 UT   10 31 45.2   +00 13 22     2.261    2.522   92.8   23.7   111   12.4 
2024-05-29 00:00 UT   10 32 41.2   +00 14 16     2.273    2.523   92.1   23.7   112   12.4 
2024-05-30 00:00 UT   10 33 38.0   +00 15 18     2.286    2.523   91.4   23.7   112   12.5 
2024-05-31 00:00 UT   10 34 35.8   +00 16 28     2.299    2.523   90.7   23.7   112   12.5 
2024-06-01 00:00 UT   10 35 34.3   +00 17 46     2.311    2.523   89.9   23.7   112   12.5 
2024-06-02 00:00 UT   10 36 33.7   +00 19 13     2.324    2.523   89.2   23.7   112   12.5 
2024-06-03 00:00 UT   10 37 34.0   +00 20 47     2.337    2.523   88.5   23.7   112   12.5 
2024-06-04 00:00 UT   10 38 35.0   +00 22 29     2.349    2.524   87.8   23.7   112   12.5 
2024-06-05 00:00 UT   10 39 36.8   +00 24 20     2.362    2.524   87.1   23.7   113   12.5 
2024-06-06 00:00 UT   10 40 39.5   +00 26 18     2.375    2.524   86.4   23.7   113   12.5 
2024-06-07 00:00 UT   10 41 42.8   +00 28 23     2.388    2.524   85.7   23.6   113   12.6 
2024-06-08 00:00 UT   10 42 47.0   +00 30 37     2.400    2.524   85.1   23.6   113   12.6 
2024-06-09 00:00 UT   10 43 51.9   +00 32 57     2.413    2.524   84.4   23.6   113   12.6 
2024-06-10 00:00 UT   10 44 57.5   +00 35 26     2.426    2.525   83.7   23.6   113   12.6 
2024-06-11 00:00 UT   10 46 03.8   +00 38 02     2.438    2.525   83.0   23.5   113   12.6 
2024-06-12 00:00 UT   10 47 10.8   +00 40 45     2.451    2.525   82.3   23.5   113   12.6 
2024-06-13 00:00 UT   10 48 18.5   +00 43 35     2.463    2.525   81.7   23.5   114   12.6 
2024-06-14 00:00 UT   10 49 26.8   +00 46 32     2.476    2.525   81.0   23.4   114   12.6 
2024-06-15 00:00 UT   10 50 35.8   +00 49 36     2.489    2.525   80.3   23.4   114   12.6 
2024-06-16 00:00 UT   10 51 45.5   +00 52 47     2.501    2.525   79.7   23.3   114   12.6 
2024-06-17 00:00 UT   10 52 55.7   +00 56 05     2.514    2.526   79.0   23.3   114   12.7 
2024-06-18 00:00 UT   10 54 06.6   +00 59 30     2.526    2.526   78.4   23.2   114   12.7 
2024-06-19 00:00 UT   10 55 18.1   -01 03 01     2.538    2.526   77.7   23.1   114   12.7 
2024-06-20 00:00 UT   10 56 30.1   -01 06 39     2.551    2.526   77.1   23.1   114   12.7 


    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.