(84) Klio
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	25 Oct 2025	11.3	1.939 AU	0.967 AU	01h36m	+28°32'	162.8°	8.7°
Today	8 Dec 2025	12.4	2.039 AU	1.262 AU	01h18m	+24°28'	129.9°	21.7°

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 Klio are:

            e (Eccentricity)                : 0.2354502
            a (Semimajor axis)              : 2.3623968
            i (Inclination)                 : 9.31367
            Ω (Longitude of ascending node) : 327.49507
            ω (Argument of perihelion)      : 15.09327
            M (Mean anomaly)                : 38.88991
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 342.39828
            B (Latitude of perihelion)      : 2.41525
            P (Orbital period in years)     : 3.63            
        

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
2025-12-08 00:00 UT   01 18 26.2   +24 28 58     1.262    2.039  129.9   21.7    80   12.4 
2025-12-08 00:36 UT   01 18 26.7   +24 28 52     1.262    2.039  129.9   21.7    80   12.4 
2025-12-09 00:00 UT   01 18 49.1   +24 24 55     1.272    2.042  129.1   22.0    80   12.5 
2025-12-10 00:00 UT   01 19 14.0   +24 21 02     1.283    2.044  128.2   22.3    79   12.5 
2025-12-11 00:00 UT   01 19 40.9   +24 17 18     1.294    2.047  127.3   22.5    79   12.5 
2025-12-12 00:00 UT   01 20 09.8   +24 13 44     1.305    2.049  126.4   22.7    78   12.5 
2025-12-13 00:00 UT   01 20 40.6   +24 10 21     1.316    2.052  125.6   23.0    78   12.6 
2025-12-14 00:00 UT   01 21 13.3   +24 07 07     1.328    2.054  124.7   23.2    78   12.6 
2025-12-15 00:00 UT   01 21 47.8   +24 04 04     1.339    2.057  123.9   23.4    77   12.6 
2025-12-16 00:00 UT   01 22 24.2   +24 01 11     1.350    2.059  123.0   23.6    77   12.7 
2025-12-17 00:00 UT   01 23 02.5   +23 58 28     1.362    2.062  122.2   23.8    77   12.7 
2025-12-18 00:00 UT   01 23 42.5   +23 55 55     1.374    2.064  121.3   24.0    76   12.7 
2025-12-19 00:00 UT   01 24 24.2   +23 53 32     1.386    2.067  120.5   24.2    76   12.7 
2025-12-20 00:00 UT   01 25 07.7   +23 51 20     1.398    2.070  119.7   24.4    76   12.8 
2025-12-21 00:00 UT   01 25 52.9   +23 49 18     1.410    2.072  118.9   24.6    75   12.8 
2025-12-22 00:00 UT   01 26 39.8   +23 47 25     1.422    2.075  118.0   24.7    75   12.8 
2025-12-23 00:00 UT   01 27 28.3   +23 45 43     1.434    2.077  117.2   24.9    75   12.8 
2025-12-24 00:00 UT   01 28 18.4   +23 44 11     1.446    2.080  116.4   25.1    75   12.9 
2025-12-25 00:00 UT   01 29 10.1   +23 42 49     1.459    2.082  115.6   25.2    74   12.9 
2025-12-26 00:00 UT   01 30 03.3   +23 41 36     1.471    2.085  114.8   25.3    74   12.9 
2025-12-27 00:00 UT   01 30 58.0   +23 40 33     1.484    2.088  114.0   25.5    74   12.9 
2025-12-28 00:00 UT   01 31 54.3   +23 39 39     1.497    2.090  113.3   25.6    74   13.0 
2025-12-29 00:00 UT   01 32 51.9   +23 38 55     1.509    2.093  112.5   25.7    73   13.0 
2025-12-30 00:00 UT   01 33 51.0   +23 38 21     1.522    2.095  111.7   25.9    73   13.0 
2025-12-31 00:00 UT   01 34 51.5   +23 37 55     1.535    2.098  110.9   26.0    73   13.0 
2026-01-01 00:00 UT   01 35 53.3   +23 37 38     1.548    2.101  110.2   26.1    73   13.1 
2026-01-02 00:00 UT   01 36 56.5   +23 37 30     1.561    2.103  109.4   26.2    73   13.1 
2026-01-03 00:00 UT   01 38 00.9   +23 37 30     1.574    2.106  108.6   26.3    73   13.1 
2026-01-04 00:00 UT   01 39 06.6   +23 37 39     1.587    2.108  107.9   26.3    72   13.1 
2026-01-05 00:00 UT   01 40 13.6   +23 37 56     1.601    2.111  107.1   26.4    72   13.2 
2026-01-06 00:00 UT   01 41 21.7   +23 38 21     1.614    2.114  106.4   26.5    72   13.2 
2026-01-07 00:00 UT   01 42 31.1   +23 38 54     1.627    2.116  105.7   26.6    72   13.2 

    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.