(230) Athamantis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	2 Mar 2024	10.9	2.497 AU	1.526 AU	10h33m	-07°20'	164.8°	6.0°
Today	19 Apr 2024	11.8	2.513 AU	1.798 AU	10h10m	-01°37'	125.1°	19.1°

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)                 : 9.45531
            Ω (Longitude of ascending node) : 239.77226
            ω (Argument of perihelion)      : 139.02837
            M (Mean anomaly)                : 146.89469
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 199.18826
            B (Latitude of perihelion)      : 6.18360
            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
2024-04-19 00:00 UT   10 10 04.4   -01 37 56     1.798    2.513  125.1   19.1   102   11.8 
2024-04-19 14:00 UT   10 10 08.4   -01 34 53     1.804    2.513  124.5   19.2   103   11.8 
2024-04-20 00:00 UT   10 10 11.6   -01 32 45     1.808    2.513  124.1   19.3   103   11.8 
2024-04-21 00:00 UT   10 10 20.4   -01 27 42     1.819    2.514  123.2   19.5   103   11.8 
2024-04-22 00:00 UT   10 10 30.8   -01 22 49     1.829    2.514  122.3   19.8   104   11.9 
2024-04-23 00:00 UT   10 10 42.8   -01 18 06     1.840    2.514  121.4   20.0   104   11.9 
2024-04-24 00:00 UT   10 10 56.3   -01 13 32     1.851    2.515  120.5   20.2   104   11.9 
2024-04-25 00:00 UT   10 11 11.3   -01 09 07     1.861    2.515  119.6   20.4   105   11.9 
2024-04-26 00:00 UT   10 11 27.8   -01 04 52     1.872    2.515  118.7   20.6   105   11.9 
2024-04-27 00:00 UT   10 11 45.9   -01 00 47     1.884    2.515  117.8   20.7   105   12.0 
2024-04-28 00:00 UT   10 12 05.3   +00 56 51     1.895    2.516  116.9   20.9   105   12.0 
2024-04-29 00:00 UT   10 12 26.3   +00 53 05     1.906    2.516  116.0   21.1   106   12.0 
2024-04-30 00:00 UT   10 12 48.7   +00 49 29     1.917    2.516  115.1   21.3   106   12.0 
2024-05-01 00:00 UT   10 13 12.5   +00 46 03     1.929    2.516  114.2   21.4   106   12.0 
2024-05-02 00:00 UT   10 13 37.7   +00 42 46     1.940    2.517  113.4   21.6   106   12.0 
2024-05-03 00:00 UT   10 14 04.3   +00 39 39     1.952    2.517  112.5   21.7   107   12.1 
2024-05-04 00:00 UT   10 14 32.2   +00 36 41     1.964    2.517  111.7   21.9   107   12.1 
2024-05-05 00:00 UT   10 15 01.6   +00 33 54     1.976    2.517  110.8   22.0   107   12.1 
2024-05-06 00:00 UT   10 15 32.2   +00 31 16     1.988    2.518  110.0   22.1   107   12.1 
2024-05-07 00:00 UT   10 16 04.2   +00 28 48     1.999    2.518  109.2   22.2   108   12.1 
2024-05-08 00:00 UT   10 16 37.5   +00 26 30     2.011    2.518  108.3   22.4   108   12.1 
2024-05-09 00:00 UT   10 17 12.1   +00 24 22     2.024    2.518  107.5   22.5   108   12.2 
2024-05-10 00:00 UT   10 17 47.9   +00 22 23     2.036    2.519  106.7   22.6   108   12.2 
2024-05-11 00:00 UT   10 18 25.0   +00 20 34     2.048    2.519  105.9   22.7   108   12.2 
2024-05-12 00:00 UT   10 19 03.3   +00 18 55     2.060    2.519  105.1   22.8   109   12.2 
2024-05-13 00:00 UT   10 19 42.8   +00 17 25     2.072    2.519  104.3   22.9   109   12.2 
2024-05-14 00:00 UT   10 20 23.4   +00 16 05     2.085    2.520  103.5   23.0   109   12.2 
2024-05-15 00:00 UT   10 21 05.3   +00 14 55     2.097    2.520  102.7   23.0   109   12.3 
2024-05-16 00:00 UT   10 21 48.2   +00 13 53     2.109    2.520  101.9   23.1   109   12.3 
2024-05-17 00:00 UT   10 22 32.3   +00 13 01     2.122    2.520  101.1   23.2   110   12.3 
2024-05-18 00:00 UT   10 23 17.5   +00 12 19     2.134    2.520  100.3   23.3   110   12.3 
2024-05-19 00:00 UT   10 24 03.8   +00 11 45     2.147    2.521   99.6   23.3   110   12.3 

    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.