(22) Kalliope
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	1 Dec 2025	11.9	2.732 AU	2.410 AU	23h34m	-17°10'	98.3°	20.9°
Opposition	2 Jan 2027	10.5	2.673 AU	1.705 AU	06h56m	+35°36'	167.2°	4.7°

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 Kalliope are:

            e (Eccentricity)                : 0.0988798
            a (Semimajor axis)              : 2.9094657
            i (Inclination)                 : 13.70168
            Ω (Longitude of ascending node) : 65.96712
            ω (Argument of perihelion)      : 358.23621
            M (Mean anomaly)                : 310.67004
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 64.25349
            B (Latitude of perihelion)      : -0.41772
            P (Orbital period in years)     : 4.96            
        

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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-12-01 00:00 UT   23 34 07.8   -17 10 27     2.410    2.732   98.3   20.9    64   11.9 
2025-12-01 05:39 UT   23 34 14.7   -17 08 06     2.412    2.731   98.1   20.9    64   11.9 
2025-12-02 00:00 UT   23 34 37.4   -17 00 27     2.422    2.731   97.5   21.0    64   11.9 
2025-12-03 00:00 UT   23 35 08.1   -16 50 23     2.434    2.730   96.7   21.0    65   11.9 
2025-12-04 00:00 UT   23 35 40.0   -16 40 14     2.446    2.729   95.9   21.1    65   11.9 
2025-12-05 00:00 UT   23 36 13.1   -16 30 00     2.459    2.728   95.1   21.1    65   12.0 
2025-12-06 00:00 UT   23 36 47.2   -16 19 43     2.471    2.727   94.3   21.1    65   12.0 
2025-12-07 00:00 UT   23 37 22.5   -16 09 20     2.483    2.727   93.5   21.1    65   12.0 
2025-12-08 00:00 UT   23 37 58.8   -15 58 54     2.496    2.726   92.7   21.2    65   12.0 
2025-12-09 00:00 UT   23 38 36.3   -15 48 24     2.508    2.725   91.9   21.2    66   12.0 
2025-12-10 00:00 UT   23 39 14.8   -15 37 50     2.521    2.724   91.1   21.2    66   12.0 
2025-12-11 00:00 UT   23 39 54.3   -15 27 11     2.533    2.723   90.4   21.2    66   12.0 
2025-12-12 00:00 UT   23 40 34.9   -15 16 29     2.545    2.722   89.6   21.2    66   12.0 
2025-12-13 00:00 UT   23 41 16.4   -15 05 44     2.558    2.722   88.8   21.2    66   12.0 
2025-12-14 00:00 UT   23 41 59.0   -14 54 54     2.570    2.721   88.0   21.2    67   12.1 
2025-12-15 00:00 UT   23 42 42.6   -14 44 02     2.583    2.720   87.3   21.2    67   12.1 
2025-12-16 00:00 UT   23 43 27.1   -14 33 05     2.595    2.719   86.5   21.2    67   12.1 
2025-12-17 00:00 UT   23 44 12.6   -14 22 06     2.608    2.718   85.8   21.2    67   12.1 
2025-12-18 00:00 UT   23 44 59.1   -14 11 03     2.620    2.718   85.0   21.1    67   12.1 
2025-12-19 00:00 UT   23 45 46.5   -13 59 57     2.633    2.717   84.3   21.1    67   12.1 
2025-12-20 00:00 UT   23 46 34.8   -13 48 47     2.645    2.716   83.5   21.1    67   12.1 
2025-12-21 00:00 UT   23 47 24.0   -13 37 35     2.658    2.715   82.8   21.1    68   12.1 
2025-12-22 00:00 UT   23 48 14.1   -13 26 20     2.670    2.715   82.0   21.0    68   12.1 
2025-12-23 00:00 UT   23 49 05.0   -13 15 02     2.682    2.714   81.3   21.0    68   12.1 
2025-12-24 00:00 UT   23 49 56.8   -13 03 41     2.695    2.713   80.6   21.0    68   12.1 
2025-12-25 00:00 UT   23 50 49.5   -12 52 18     2.707    2.712   79.8   20.9    68   12.1 
2025-12-26 00:00 UT   23 51 43.0   -12 40 52     2.719    2.711   79.1   20.9    68   12.2 
2025-12-27 00:00 UT   23 52 37.2   -12 29 24     2.732    2.711   78.4   20.8    68   12.2 
2025-12-28 00:00 UT   23 53 32.3   -12 17 53     2.744    2.710   77.7   20.8    68   12.2 
2025-12-29 00:00 UT   23 54 28.2   -12 06 20     2.756    2.709   76.9   20.7    69   12.2 
2025-12-30 00:00 UT   23 55 24.8   -11 54 44     2.768    2.708   76.2   20.6    69   12.2 
2025-12-31 00:00 UT   23 56 22.2   -11 43 07     2.781    2.708   75.5   20.6    69   12.2 

    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.