2020 BC9
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	23 Oct 2026	25.5	2.028 AU	1.052 AU	02h16m	-02°49'	164.4°	7.6°

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 2020 BC9 are:

            e (Eccentricity)                : 0.5669380
            a (Semimajor axis)              : 2.3334992
            i (Inclination)                 : 10.30959
            Ω (Longitude of ascending node) : 159.56111
            ω (Argument of perihelion)      : 343.69966
            M (Mean anomaly)                : 277.33944
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 143.51028
            B (Latitude of perihelion)      : -2.87924
            P (Orbital period in years)     : 3.56            
        

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
2026-10-23 00:00 UT   02 16 19.7   -02 49 25     1.052    2.028  164.4    7.6   334   25.5 
2026-10-23 09:05 UT   02 15 52.7   -02 54 42     1.050    2.026  164.4    7.6   336   25.5 
2026-10-24 00:00 UT   02 15 07.8   -03 03 22     1.045    2.021  164.3    7.6   339   25.5 
2026-10-25 00:00 UT   02 13 54.7   -03 17 17     1.039    2.014  164.2    7.7   344   25.5 
2026-10-26 00:00 UT   02 12 40.3   -03 31 08     1.033    2.007  163.9    7.9   349   25.4 
2026-10-27 00:00 UT   02 11 24.8   -03 44 55     1.026    2.000  163.6    8.1   354   25.4 
2026-10-28 00:00 UT   02 10 08.3   -03 58 36     1.021    1.992  163.1    8.3   358   25.4 
2026-10-29 00:00 UT   02 08 50.8   -04 12 10     1.015    1.985  162.5    8.6     2   25.4 
2026-10-30 00:00 UT   02 07 32.5   -04 25 37     1.010    1.978  161.9    9.0     6   25.4 
2026-10-31 00:00 UT   02 06 13.4   -04 38 55     1.005    1.971  161.1    9.4    10   25.4 
2026-11-01 00:00 UT   02 04 53.7   -04 52 03     1.000    1.963  160.4    9.8    13   25.4 
2026-11-02 00:00 UT   02 03 33.4   -05 05 01     0.995    1.956  159.5   10.2    17   25.4 
2026-11-03 00:00 UT   02 02 12.8   -05 17 47     0.991    1.949  158.6   10.7    19   25.4 
2026-11-04 00:00 UT   02 00 51.8   -05 30 19     0.987    1.941  157.6   11.2    22   25.4 
2026-11-05 00:00 UT   01 59 30.6   -05 42 38     0.983    1.934  156.6   11.7    25   25.4 
2026-11-06 00:00 UT   01 58 09.4   -05 54 42     0.980    1.927  155.6   12.3    27   25.4 
2026-11-07 00:00 UT   01 56 48.2   -06 06 30     0.977    1.919  154.5   12.8    29   25.4 
2026-11-08 00:00 UT   01 55 27.2   -06 18 01     0.974    1.912  153.5   13.4    31   25.4 
2026-11-09 00:00 UT   01 54 06.5   -06 29 14     0.971    1.905  152.4   14.0    33   25.4 
2026-11-10 00:00 UT   01 52 46.2   -06 40 08     0.968    1.897  151.2   14.5    35   25.4 
2026-11-11 00:00 UT   01 51 26.5   -06 50 43     0.966    1.890  150.1   15.1    36   25.5 
2026-11-12 00:00 UT   01 50 07.4   -07 00 58     0.964    1.882  148.9   15.7    38   25.5 
2026-11-13 00:00 UT   01 48 49.1   -07 10 51     0.962    1.875  147.8   16.3    39   25.5 
2026-11-14 00:00 UT   01 47 31.8   -07 20 23     0.960    1.867  146.6   17.0    40   25.5 

    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.