(179) Klytaemnestra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Jul 2025	13.0	2.659 AU	2.117 AU	23h47m	+09°23'	111.1°	20.9°
Opposition	18 Sep 2025	11.9	2.648 AU	1.657 AU	23h25m	+09°34'	167.8°	4.6°

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 Klytaemnestra are:

            e (Eccentricity)                : 0.1094492
            a (Semimajor axis)              : 2.9733665
            i (Inclination)                 : 7.81734
            Ω (Longitude of ascending node) : 251.82504
            ω (Argument of perihelion)      : 104.46650
            M (Mean anomaly)                : 333.26643
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 176.42147
            B (Latitude of perihelion)      : 7.56801
            P (Orbital period in years)     : 5.13            
        

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
2025-07-15 00:00 UT   23 47 44.8   +09 23 26     2.117    2.659  111.1   20.9   242   13.0 
2025-07-15 23:16 UT   23 48 03.7   +09 29 02     2.106    2.658  111.9   20.8   242   13.0 
2025-07-16 00:00 UT   23 48 04.2   +09 29 13     2.105    2.658  112.0   20.8   242   13.0 
2025-07-17 00:00 UT   23 48 22.4   +09 34 51     2.094    2.658  112.8   20.6   242   13.0 
2025-07-18 00:00 UT   23 48 39.3   +09 40 22     2.082    2.658  113.6   20.5   242   13.0 
2025-07-19 00:00 UT   23 48 54.9   +09 45 45     2.070    2.657  114.5   20.4   242   13.0 
2025-07-20 00:00 UT   23 49 09.2   +09 50 60     2.059    2.657  115.3   20.2   241   13.0 
2025-07-21 00:00 UT   23 49 22.3   +09 56 06     2.048    2.657  116.1   20.1   241   13.0 
2025-07-22 00:00 UT   23 49 34.0   +10 01 04     2.036    2.656  117.0   19.9   241   12.9 
2025-07-23 00:00 UT   23 49 44.4   +10 05 53     2.025    2.656  117.9   19.8   241   12.9 
2025-07-24 00:00 UT   23 49 53.4   +10 10 33     2.014    2.656  118.7   19.6   240   12.9 
2025-07-25 00:00 UT   23 50 01.1   +10 15 05     2.003    2.656  119.6   19.4   240   12.9 
2025-07-26 00:00 UT   23 50 07.4   +10 19 26     1.992    2.655  120.5   19.2   240   12.9 
2025-07-27 00:00 UT   23 50 12.4   +10 23 39     1.981    2.655  121.4   19.1   240   12.8 
2025-07-28 00:00 UT   23 50 16.0   +10 27 42     1.970    2.655  122.2   18.9   239   12.8 
2025-07-29 00:00 UT   23 50 18.3   +10 31 35     1.960    2.655  123.1   18.7   239   12.8 
2025-07-30 00:00 UT   23 50 19.1   +10 35 19     1.949    2.654  124.0   18.5   239   12.8 
2025-07-31 00:00 UT   23 50 18.6   +10 38 52     1.939    2.654  124.9   18.3   239   12.8 
2025-08-01 00:00 UT   23 50 16.8   +10 42 15     1.929    2.654  125.8   18.1   238   12.8 
2025-08-02 00:00 UT   23 50 13.5   +10 45 29     1.919    2.654  126.8   17.8   238   12.7 
2025-08-03 00:00 UT   23 50 08.9   +10 48 31     1.909    2.653  127.7   17.6   238   12.7 
2025-08-04 00:00 UT   23 50 02.9   +10 51 23     1.899    2.653  128.6   17.4   237   12.7 
2025-08-05 00:00 UT   23 49 55.5   +10 54 05     1.889    2.653  129.5   17.2   237   12.7 
2025-08-06 00:00 UT   23 49 46.7   +10 56 35     1.880    2.653  130.5   16.9   237   12.7 
2025-08-07 00:00 UT   23 49 36.6   +10 58 55     1.871    2.653  131.4   16.7   236   12.6 
2025-08-08 00:00 UT   23 49 25.1   +11 01 03     1.861    2.652  132.3   16.4   236   12.6 
2025-08-09 00:00 UT   23 49 12.2   +11 03 00     1.852    2.652  133.3   16.2   235   12.6 
2025-08-10 00:00 UT   23 48 58.0   +11 04 46     1.843    2.652  134.2   15.9   235   12.6 
2025-08-11 00:00 UT   23 48 42.4   +11 06 20     1.835    2.652  135.2   15.6   234   12.6 
2025-08-12 00:00 UT   23 48 25.5   +11 07 43     1.826    2.652  136.2   15.3   234   12.5 
2025-08-13 00:00 UT   23 48 07.2   +11 08 54     1.818    2.651  137.1   15.1   234   12.5 
2025-08-14 00:00 UT   23 47 47.7   +11 09 53     1.809    2.651  138.1   14.8   233   12.5 

    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.