(22) Kalliope
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Apr 2024	12.3	3.190 AU	2.631 AU	18h13m	-26°27'	115.2°	16.6°
Opposition	16 Jun 2024	11.2	3.172 AU	2.161 AU	17h42m	-30°22'	173.0°	2.2°

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)                : 0.0987987
            a (Semimajor axis)              : 2.9110627
            i (Inclination)                 : 13.70185
            Ω (Longitude of ascending node) : 65.97444
            ω (Argument of perihelion)      : 357.90807
            M (Mean anomaly)                : 191.90007
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 63.94199
            B (Latitude of perihelion)      : -0.49541
            P (Orbital period in years)     : 4.97            
        

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
2024-04-18 00:00 UT   18 13 02.1   -26 27 29     2.631    3.190  115.2   16.6   270   12.3 
2024-04-18 20:47 UT   18 13 09.9   -26 30 40     2.620    3.190  116.0   16.4   270   12.3 
2024-04-19 00:00 UT   18 13 11.0   -26 31 10     2.618    3.190  116.1   16.4   270   12.3 
2024-04-20 00:00 UT   18 13 18.5   -26 34 52     2.605    3.190  117.0   16.3   270   12.3 
2024-04-21 00:00 UT   18 13 24.5   -26 38 36     2.592    3.189  118.0   16.2   270   12.3 
2024-04-22 00:00 UT   18 13 29.2   -26 42 23     2.579    3.189  119.0   16.0   270   12.3 
2024-04-23 00:00 UT   18 13 32.4   -26 46 11     2.566    3.189  119.9   15.9   271   12.2 
2024-04-24 00:00 UT   18 13 34.2   -26 50 02     2.553    3.189  120.9   15.7   271   12.2 
2024-04-25 00:00 UT   18 13 34.6   -26 53 55     2.541    3.188  121.8   15.5   271   12.2 
2024-04-26 00:00 UT   18 13 33.4   -26 57 50     2.529    3.188  122.8   15.4   271   12.2 
2024-04-27 00:00 UT   18 13 30.9   -27 01 46     2.516    3.188  123.8   15.2   271   12.2 
2024-04-28 00:00 UT   18 13 26.8   -27 05 45     2.504    3.188  124.8   15.0   271   12.2 
2024-04-29 00:00 UT   18 13 21.3   -27 09 45     2.492    3.187  125.8   14.9   271   12.1 
2024-04-30 00:00 UT   18 13 14.2   -27 13 48     2.480    3.187  126.8   14.7   272   12.1 
2024-05-01 00:00 UT   18 13 05.7   -27 17 52     2.469    3.187  127.8   14.5   272   12.1 
2024-05-02 00:00 UT   18 12 55.7   -27 21 58     2.457    3.187  128.8   14.3   272   12.1 
2024-05-03 00:00 UT   18 12 44.2   -27 26 05     2.446    3.186  129.8   14.1   272   12.1 
2024-05-04 00:00 UT   18 12 31.1   -27 30 14     2.435    3.186  130.8   13.9   272   12.1 
2024-05-05 00:00 UT   18 12 16.6   -27 34 24     2.424    3.186  131.8   13.7   273   12.0 
2024-05-06 00:00 UT   18 12 00.5   -27 38 36     2.413    3.186  132.8   13.4   273   12.0 
2024-05-07 00:00 UT   18 11 42.9   -27 42 49     2.402    3.185  133.8   13.2   273   12.0 
2024-05-08 00:00 UT   18 11 23.8   -27 47 04     2.392    3.185  134.9   13.0   273   12.0 
2024-05-09 00:00 UT   18 11 03.2   -27 51 19     2.381    3.185  135.9   12.7   274   12.0 
2024-05-10 00:00 UT   18 10 41.2   -27 55 35     2.371    3.184  136.9   12.5   274   11.9 
2024-05-11 00:00 UT   18 10 17.6   -27 59 53     2.361    3.184  138.0   12.3   274   11.9 
2024-05-12 00:00 UT   18 09 52.6   -28 04 10     2.351    3.184  139.0   12.0   274   11.9 
2024-05-13 00:00 UT   18 09 26.1   -28 08 29     2.342    3.184  140.1   11.8   275   11.9 
2024-05-14 00:00 UT   18 08 58.1   -28 12 48     2.333    3.183  141.1   11.5   275   11.9 
2024-05-15 00:00 UT   18 08 28.8   -28 17 07     2.324    3.183  142.2   11.2   275   11.9 
2024-05-16 00:00 UT   18 07 58.0   -28 21 26     2.315    3.183  143.2   11.0   276   11.8 
2024-05-17 00:00 UT   18 07 25.8   -28 25 46     2.306    3.182  144.3   10.7   276   11.8 
2024-05-18 00:00 UT   18 06 52.2   -28 30 05     2.297    3.182  145.4   10.4   277   11.8 

    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.