(216) Kleopatra
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Sep 2025	13.5	3.455 AU	4.116 AU	14h27m	-11°36'	43.4°	11.5°
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
2025-09-18 00:00 UT   14 27 18.1   -11 36 47     4.116    3.455   43.4   11.5   106   13.5 
2025-09-18 09:12 UT   14 27 43.7   -11 38 27     4.119    3.455   43.1   11.5   106   13.5 
2025-09-19 00:00 UT   14 28 24.9   -11 41 09     4.125    3.454   42.7   11.4   105   13.5 
2025-09-20 00:00 UT   14 29 32.2   -11 45 32     4.134    3.453   42.0   11.2   105   13.5 
2025-09-21 00:00 UT   14 30 39.8   -11 49 55     4.143    3.453   41.3   11.1   105   13.5 
2025-09-22 00:00 UT   14 31 47.7   -11 54 18     4.152    3.452   40.6   10.9   105   13.5 
2025-09-23 00:00 UT   14 32 56.1   -11 58 42     4.160    3.451   39.9   10.8   105   13.5 
2025-09-24 00:00 UT   14 34 04.8   -12 03 06     4.169    3.451   39.2   10.6   105   13.5 
2025-09-25 00:00 UT   14 35 13.8   -12 07 30     4.177    3.450   38.5   10.4   104   13.5 
2025-09-26 00:00 UT   14 36 23.2   -12 11 54     4.185    3.449   37.9   10.3   104   13.5 
2025-09-27 00:00 UT   14 37 32.9   -12 16 18     4.194    3.448   37.2   10.1   104   13.5 
2025-09-28 00:00 UT   14 38 43.0   -12 20 42     4.201    3.448   36.5   10.0   104   13.5 
2025-09-29 00:00 UT   14 39 53.4   -12 25 06     4.209    3.447   35.8    9.8   104   13.5 
2025-09-30 00:00 UT   14 41 04.1   -12 29 29     4.217    3.446   35.1    9.6   103   13.5 
2025-10-01 00:00 UT   14 42 15.2   -12 33 53     4.224    3.445   34.4    9.5   103   13.5 
2025-10-02 00:00 UT   14 43 26.6   -12 38 16     4.231    3.445   33.8    9.3   103   13.5 
2025-10-03 00:00 UT   14 44 38.2   -12 42 39     4.239    3.444   33.1    9.1   103   13.5 
2025-10-04 00:00 UT   14 45 50.2   -12 47 01     4.246    3.443   32.4    9.0   103   13.5 
2025-10-05 00:00 UT   14 47 02.5   -12 51 23     4.252    3.442   31.7    8.8   102   13.5 
2025-10-06 00:00 UT   14 48 15.1   -12 55 44     4.259    3.441   31.1    8.6   102   13.5 
2025-10-07 00:00 UT   14 49 28.0   -13 00 05     4.266    3.441   30.4    8.4   102   13.5 
2025-10-08 00:00 UT   14 50 41.2   -13 04 25     4.272    3.440   29.7    8.3   101   13.5 
2025-10-09 00:00 UT   14 51 54.7   -13 08 45     4.278    3.439   29.0    8.1   101   13.4 
2025-10-10 00:00 UT   14 53 08.4   -13 13 04     4.284    3.438   28.4    7.9   101   13.4 
2025-10-11 00:00 UT   14 54 22.5   -13 17 22     4.290    3.437   27.7    7.8   101   13.4 
2025-10-12 00:00 UT   14 55 36.8   -13 21 39     4.296    3.436   27.0    7.6   100   13.4 
2025-10-13 00:00 UT   14 56 51.4   -13 25 55     4.301    3.436   26.3    7.4   100   13.4 
2025-10-14 00:00 UT   14 58 06.3   -13 30 10     4.307    3.435   25.7    7.2   100   13.4 
2025-10-15 00:00 UT   14 59 21.4   -13 34 25     4.312    3.434   25.0    7.1    99   13.4 
2025-10-16 00:00 UT   15 00 36.8   -13 38 38     4.317    3.433   24.3    6.9    99   13.4 

    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.