2020 BC9
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	24 Oct 2025	29.4	3.560 AU	3.105 AU	21h27m	-14°00'	109.3°	15.3°

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 2020 BC9 are:

            e (Eccentricity)                : 0.5668419
            a (Semimajor axis)              : 2.3338634
            i (Inclination)                 : 10.30820
            Ω (Longitude of ascending node) : 159.55991
            ω (Argument of perihelion)      : 343.68672
            M (Mean anomaly)                : 222.05500
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 143.49625
            B (Latitude of perihelion)      : -2.88108
            P (Orbital period in years)     : 3.57            
        

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
2025-10-24 00:00 UT   21 27 24.7   -14 00 03     3.105    3.560  109.3   15.3    72   29.4 
2025-10-24 17:46 UT   21 27 26.2   -14 01 04     3.115    3.558  108.5   15.4    72   29.4 
2025-10-25 00:00 UT   21 27 26.8   -14 01 25     3.119    3.558  108.3   15.4    72   29.4 
2025-10-26 00:00 UT   21 27 30.1   -14 02 41     3.132    3.556  107.3   15.5    72   29.4 
2025-10-27 00:00 UT   21 27 34.6   -14 03 50     3.146    3.555  106.3   15.6    72   29.4 
2025-10-28 00:00 UT   21 27 40.3   -14 04 53     3.159    3.553  105.3   15.6    72   29.4 
2025-10-29 00:00 UT   21 27 47.1   -14 05 50     3.173    3.552  104.3   15.7    72   29.4 
2025-10-30 00:00 UT   21 27 55.0   -14 06 41     3.186    3.550  103.4   15.8    72   29.4 
2025-10-31 00:00 UT   21 28 04.1   -14 07 26     3.200    3.548  102.4   15.9    72   29.4 
2025-11-01 00:00 UT   21 28 14.3   -14 08 04     3.214    3.547  101.4   15.9    72   29.5 
2025-11-02 00:00 UT   21 28 25.6   -14 08 36     3.228    3.545  100.5   16.0    72   29.5 
2025-11-03 00:00 UT   21 28 38.1   -14 09 03     3.242    3.543   99.5   16.0    72   29.5 
2025-11-04 00:00 UT   21 28 51.6   -14 09 23     3.255    3.542   98.6   16.1    72   29.5 
2025-11-05 00:00 UT   21 29 06.2   -14 09 37     3.269    3.540   97.6   16.1    72   29.5 
2025-11-06 00:00 UT   21 29 21.9   -14 09 46     3.283    3.538   96.7   16.2    72   29.5 
2025-11-07 00:00 UT   21 29 38.6   -14 09 49     3.297    3.536   95.7   16.2    72   29.5 
2025-11-08 00:00 UT   21 29 56.3   -14 09 45     3.311    3.535   94.8   16.2    72   29.5 
2025-11-09 00:00 UT   21 30 15.1   -14 09 37     3.325    3.533   93.9   16.2    72   29.5 
2025-11-10 00:00 UT   21 30 35.0   -14 09 22     3.339    3.531   92.9   16.3    72   29.5 
2025-11-11 00:00 UT   21 30 55.8   -14 09 02     3.353    3.529   92.0   16.3    72   29.6 
2025-11-12 00:00 UT   21 31 17.6   -14 08 36     3.367    3.527   91.1   16.3    72   29.6 
2025-11-13 00:00 UT   21 31 40.5   -14 08 04     3.381    3.526   90.2   16.3    72   29.6 
2025-11-14 00:00 UT   21 32 04.3   -14 07 27     3.395    3.524   89.3   16.3    71   29.6 
2025-11-15 00:00 UT   21 32 29.1   -14 06 45     3.408    3.522   88.4   16.3    71   29.6 
2025-11-16 00:00 UT   21 32 54.8   -14 05 56     3.422    3.520   87.5   16.3    71   29.6 
2025-11-17 00:00 UT   21 33 21.5   -14 05 03     3.436    3.518   86.6   16.3    71   29.6 
2025-11-18 00:00 UT   21 33 49.1   -14 04 04     3.450    3.516   85.7   16.3    71   29.6 
2025-11-19 00:00 UT   21 34 17.7   -14 02 59     3.464    3.514   84.8   16.3    71   29.6 
2025-11-20 00:00 UT   21 34 47.2   -14 01 50     3.478    3.512   83.9   16.2    71   29.6 
2025-11-21 00:00 UT   21 35 17.5   -14 00 35     3.491    3.510   83.0   16.2    71   29.6 
2025-11-22 00:00 UT   21 35 48.8   -13 59 14     3.505    3.508   82.1   16.2    71   29.6 
2025-11-23 00:00 UT   21 36 20.9   -13 57 49     3.519    3.507   81.2   16.2    71   29.6 

    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.