(216) Kleopatra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Aug 2025	13.4	3.481 AU	3.555 AU	13h43m	-08°41'	77.6°	16.5°
Opposition	21 Jun 2026	11.5	3.044 AU	2.055 AU	18h03m	-07°16'	163.8°	5.3°

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 Kleopatra are:

            e (Eccentricity)                : 0.2505210
            a (Semimajor axis)              : 2.7945267
            i (Inclination)                 : 13.11906
            Ω (Longitude of ascending node) : 215.31769
            ω (Argument of perihelion)      : 179.77486
            M (Mean anomaly)                : 175.48668
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 215.09843
            B (Latitude of perihelion)      : 0.05110
            P (Orbital period in years)     : 4.67            
        

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
2025-08-02 00:00 UT   13 43 39.0   -08 41 01     3.555    3.481   77.6   16.5   111   13.4 
2025-08-02 08:47 UT   13 43 54.6   -08 42 00     3.561    3.481   77.3   16.5   111   13.4 
2025-08-03 00:00 UT   13 44 21.9   -08 43 43     3.569    3.480   76.8   16.5   110   13.4 
2025-08-04 00:00 UT   13 45 05.3   -08 46 28     3.583    3.480   76.0   16.4   110   13.4 
2025-08-05 00:00 UT   13 45 49.5   -08 49 18     3.597    3.479   75.2   16.4   110   13.4 
2025-08-06 00:00 UT   13 46 34.3   -08 52 11     3.611    3.479   74.5   16.3   110   13.4 
2025-08-07 00:00 UT   13 47 19.7   -08 55 07     3.624    3.479   73.7   16.2   110   13.4 
2025-08-08 00:00 UT   13 48 05.8   -08 58 08     3.638    3.478   72.9   16.2   110   13.4 
2025-08-09 00:00 UT   13 48 52.5   -09 01 11     3.651    3.478   72.2   16.1   110   13.4 
2025-08-10 00:00 UT   13 49 39.8   -09 04 19     3.665    3.477   71.4   16.0   110   13.4 
2025-08-11 00:00 UT   13 50 27.8   -09 07 29     3.678    3.477   70.7   16.0   110   13.4 
2025-08-12 00:00 UT   13 51 16.3   -09 10 43     3.692    3.476   69.9   15.9   110   13.4 
2025-08-13 00:00 UT   13 52 05.4   -09 13 60     3.705    3.476   69.2   15.8   110   13.5 
2025-08-14 00:00 UT   13 52 55.1   -09 17 20     3.718    3.475   68.4   15.7   110   13.5 
2025-08-15 00:00 UT   13 53 45.4   -09 20 43     3.731    3.475   67.7   15.6   110   13.5 
2025-08-16 00:00 UT   13 54 36.3   -09 24 09     3.744    3.474   66.9   15.6   110   13.5 
2025-08-17 00:00 UT   13 55 27.8   -09 27 37     3.757    3.474   66.2   15.5   109   13.5 
2025-08-18 00:00 UT   13 56 19.8   -09 31 09     3.770    3.473   65.4   15.4   109   13.5 
2025-08-19 00:00 UT   13 57 12.4   -09 34 44     3.783    3.473   64.7   15.3   109   13.5 
2025-08-20 00:00 UT   13 58 05.5   -09 38 21     3.795    3.472   64.0   15.2   109   13.5 
2025-08-21 00:00 UT   13 58 59.2   -09 42 00     3.808    3.472   63.2   15.1   109   13.5 
2025-08-22 00:00 UT   13 59 53.4   -09 45 43     3.820    3.471   62.5   15.0   109   13.5 
2025-08-23 00:00 UT   14 00 48.2   -09 49 27     3.833    3.471   61.8   14.9   109   13.5 
2025-08-24 00:00 UT   14 01 43.5   -09 53 14     3.845    3.470   61.1   14.8   109   13.5 
2025-08-25 00:00 UT   14 02 39.3   -09 57 03     3.857    3.470   60.3   14.7   109   13.5 
2025-08-26 00:00 UT   14 03 35.6   -10 00 55     3.869    3.469   59.6   14.6   109   13.5 
2025-08-27 00:00 UT   14 04 32.5   -10 04 48     3.881    3.469   58.9   14.4   108   13.5 
2025-08-28 00:00 UT   14 05 29.8   -10 08 44     3.893    3.468   58.2   14.3   108   13.5 
2025-08-29 00:00 UT   14 06 27.6   -10 12 41     3.905    3.467   57.4   14.2   108   13.5 
2025-08-30 00:00 UT   14 07 25.9   -10 16 41     3.917    3.467   56.7   14.1   108   13.5 
2025-08-31 00:00 UT   14 08 24.7   -10 20 42     3.928    3.466   56.0   14.0   108   13.5 
2025-09-01 00:00 UT   14 09 24.0   -10 24 45     3.940    3.466   55.3   13.9   108   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.