2021 CH8
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 Dec 2025	25.6	1.433 AU	0.563 AU	03h50m	-11°49'	134.0°	29.6°

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 2021 CH8 are:

            e (Eccentricity)                : 0.2805442
            a (Semimajor axis)              : 1.1796885
            i (Inclination)                 : 12.19768
            Ω (Longitude of ascending node) : 149.83680
            ω (Argument of perihelion)      : 75.69175
            M (Mean anomaly)                : 208.05564
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 225.21209
            B (Latitude of perihelion)      : 11.81376
            P (Orbital period in years)     : 1.28            
        

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
2025-12-20 00:00 UT   03 50 29.1   -11 49 09     0.563    1.433  134.0   29.6    40   25.6 
2025-12-20 12:25 UT   03 49 35.4   -11 43 40     0.564    1.432  133.6   29.8    41   25.7 
2025-12-21 00:00 UT   03 48 46.1   -11 38 24     0.565    1.431  133.2   30.1    41   25.7 
2025-12-22 00:00 UT   03 47 06.5   -11 27 01     0.567    1.428  132.3   30.6    43   25.7 
2025-12-23 00:00 UT   03 45 30.4   -11 15 01     0.569    1.426  131.4   31.1    44   25.7 
2025-12-24 00:00 UT   03 43 57.9   -11 02 25     0.572    1.423  130.6   31.7    46   25.7 
2025-12-25 00:00 UT   03 42 29.2   -10 49 15     0.575    1.421  129.7   32.2    47   25.7 
2025-12-26 00:00 UT   03 41 04.2   -10 35 32     0.577    1.418  128.8   32.7    48   25.8 
2025-12-27 00:00 UT   03 39 43.1   -10 21 18     0.580    1.416  127.9   33.2    49   25.8 
2025-12-28 00:00 UT   03 38 25.8   -10 06 34     0.583    1.413  127.0   33.8    50   25.8 
2025-12-29 00:00 UT   03 37 12.5   -09 51 22     0.586    1.411  126.1   34.3    52   25.8 
2025-12-30 00:00 UT   03 36 03.0   -09 35 43     0.589    1.408  125.2   34.8    53   25.9 
2025-12-31 00:00 UT   03 34 57.5   -09 19 38     0.592    1.405  124.3   35.3    54   25.9 
2026-01-01 00:00 UT   03 33 55.9   -09 03 10     0.596    1.402  123.4   35.8    55   25.9 
2026-01-02 00:00 UT   03 32 58.3   -08 46 18     0.599    1.400  122.5   36.3    55   25.9 
2026-01-03 00:00 UT   03 32 04.5   -08 29 05     0.602    1.397  121.7   36.8    56   25.9 
2026-01-04 00:00 UT   03 31 14.7   -08 11 31     0.606    1.394  120.8   37.3    57   26.0 
2026-01-05 00:00 UT   03 30 28.7   -07 53 38     0.609    1.391  119.9   37.8    58   26.0 
2026-01-06 00:00 UT   03 29 46.6   -07 35 27     0.613    1.388  119.0   38.3    59   26.0 
2026-01-07 00:00 UT   03 29 08.4   -07 16 58     0.616    1.385  118.2   38.7    60   26.0 
2026-01-08 00:00 UT   03 28 33.9   -06 58 14     0.620    1.382  117.3   39.2    60   26.0 
2026-01-09 00:00 UT   03 28 03.2   -06 39 14     0.624    1.379  116.4   39.7    61   26.1 
2026-01-10 00:00 UT   03 27 36.3   -06 19 59     0.627    1.376  115.6   40.1    62   26.1 
2026-01-11 00:00 UT   03 27 13.1   -06 00 32     0.631    1.373  114.8   40.6    63   26.1 
2026-01-12 00:00 UT   03 26 53.5   -05 40 51     0.635    1.370  113.9   41.0    63   26.1 

    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.