(216) Kleopatra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	20 Apr 2025	11.9	3.491 AU	2.486 AU	13h51m	-13°09'	178.4°	0.5°
Today	11 May 2025	12.3	3.494 AU	2.546 AU	13h37m	-10°51'	156.2°	6.7°

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) : 215.31770
            ω (Argument of perihelion)      : 179.77484
            M (Mean anomaly)                : 175.48669
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 215.09842
            B (Latitude of perihelion)      : 0.05111
            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
2025-05-11 00:00 UT   13 37 06.2   -10 51 20     2.546    3.494  156.2    6.7   110   12.3 
2025-05-11 15:53 UT   13 36 41.8   -10 47 13     2.550    3.494  155.5    6.9   110   12.3 
2025-05-12 00:00 UT   13 36 29.5   -10 45 07     2.552    3.494  155.1    7.0   110   12.3 
2025-05-13 00:00 UT   13 35 53.7   -10 38 59     2.558    3.494  153.9    7.3   110   12.4 
2025-05-14 00:00 UT   13 35 18.8   -10 32 56     2.565    3.494  152.8    7.6   110   12.4 
2025-05-15 00:00 UT   13 34 44.7   -10 26 58     2.571    3.494  151.7    7.9   110   12.4 
2025-05-16 00:00 UT   13 34 11.4   -10 21 05     2.578    3.494  150.6    8.2   111   12.4 
2025-05-17 00:00 UT   13 33 39.1   -10 15 18     2.586    3.494  149.4    8.5   111   12.4 
2025-05-18 00:00 UT   13 33 07.7   -10 09 36     2.593    3.494  148.3    8.7   111   12.5 
2025-05-19 00:00 UT   13 32 37.2   -10 04 01     2.601    3.494  147.2    9.0   111   12.5 
2025-05-20 00:00 UT   13 32 07.7   -09 58 32     2.609    3.494  146.1    9.3   111   12.5 
2025-05-21 00:00 UT   13 31 39.1   -09 53 08     2.617    3.495  145.0    9.6   111   12.5 
2025-05-22 00:00 UT   13 31 11.6   -09 47 52     2.625    3.495  143.9    9.8   111   12.5 
2025-05-23 00:00 UT   13 30 45.0   -09 42 42     2.634    3.495  142.8   10.1   111   12.5 
2025-05-24 00:00 UT   13 30 19.5   -09 37 38     2.643    3.495  141.7   10.3   111   12.6 
2025-05-25 00:00 UT   13 29 55.0   -09 32 42     2.652    3.495  140.6   10.6   111   12.6 
2025-05-26 00:00 UT   13 29 31.6   -09 27 53     2.661    3.495  139.5   10.8   111   12.6 
2025-05-27 00:00 UT   13 29 09.2   -09 23 10     2.671    3.495  138.5   11.1   112   12.6 
2025-05-28 00:00 UT   13 28 47.9   -09 18 35     2.681    3.495  137.4   11.3   112   12.6 
2025-05-29 00:00 UT   13 28 27.7   -09 14 08     2.691    3.495  136.3   11.6   112   12.6 
2025-05-30 00:00 UT   13 28 08.6   -09 09 48     2.701    3.495  135.3   11.8   112   12.7 
2025-05-31 00:00 UT   13 27 50.7   -09 05 35     2.711    3.495  134.2   12.0   112   12.7 
2025-06-01 00:00 UT   13 27 33.8   -09 01 30     2.722    3.495  133.2   12.2   112   12.7 
2025-06-02 00:00 UT   13 27 18.0   -08 57 32     2.732    3.494  132.1   12.4   112   12.7 
2025-06-03 00:00 UT   13 27 03.3   -08 53 43     2.743    3.494  131.1   12.6   112   12.7 
2025-06-04 00:00 UT   13 26 49.8   -08 50 01     2.754    3.494  130.1   12.8   112   12.7 
2025-06-05 00:00 UT   13 26 37.4   -08 46 26     2.765    3.494  129.0   13.0   112   12.8 
2025-06-06 00:00 UT   13 26 26.1   -08 42 60     2.777    3.494  128.0   13.2   112   12.8 
2025-06-07 00:00 UT   13 26 15.9   -08 39 41     2.788    3.494  127.0   13.4   112   12.8 
2025-06-08 00:00 UT   13 26 06.8   -08 36 30     2.800    3.494  126.0   13.6   112   12.8 
2025-06-09 00:00 UT   13 25 58.9   -08 33 27     2.812    3.494  125.0   13.8   112   12.8 
2025-06-10 00:00 UT   13 25 52.0   -08 30 32     2.824    3.494  124.0   13.9   112   12.8 

    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.