2020 BC9
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 Sep 2026	26.6	2.222 AU	1.344 AU	02h37m	+03°05'	142.0°	16.1°

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)                : 0.5669427
            a (Semimajor axis)              : 2.3335296
            i (Inclination)                 : 10.30966
            Ω (Longitude of ascending node) : 159.56112
            ω (Argument of perihelion)      : 343.69963
            M (Mean anomaly)                : 277.32719
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 143.51027
            B (Latitude of perihelion)      : -2.87926
            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
2026-09-25 00:00 UT   02 37 30.0   +03 05 01     1.344    2.222  142.0   16.1   267   26.6 
2026-09-25 07:10 UT   02 37 24.8   +03 01 58     1.340    2.220  142.3   16.0   267   26.5 
2026-09-26 00:00 UT   02 37 11.9   +02 54 44     1.331    2.216  143.0   15.8   268   26.5 
2026-09-27 00:00 UT   02 36 51.7   +02 44 13     1.318    2.209  144.0   15.5   269   26.5 
2026-09-28 00:00 UT   02 36 29.5   +02 33 30     1.305    2.202  145.0   15.1   269   26.4 
2026-09-29 00:00 UT   02 36 05.3   +02 22 33     1.292    2.196  146.1   14.8   270   26.4 
2026-09-30 00:00 UT   02 35 39.0   +02 11 23     1.279    2.189  147.1   14.4   271   26.4 
2026-10-01 00:00 UT   02 35 10.5   +02 00 00     1.267    2.182  148.1   14.0   272   26.3 
2026-10-02 00:00 UT   02 34 40.0   +01 48 25     1.255    2.175  149.1   13.7   274   26.3 
2026-10-03 00:00 UT   02 34 07.4   +01 36 37     1.243    2.168  150.1   13.3   275   26.2 
2026-10-04 00:00 UT   02 33 32.7   +01 24 38     1.231    2.162  151.1   12.9   276   26.2 
2026-10-05 00:00 UT   02 32 55.8   +01 12 27     1.219    2.155  152.1   12.5   277   26.2 
2026-10-06 00:00 UT   02 32 16.8   +01 00 04     1.208    2.148  153.1   12.2   279   26.1 
2026-10-07 00:00 UT   02 31 35.7   +00 47 31     1.197    2.141  154.1   11.8   280   26.1 
2026-10-08 00:00 UT   02 30 52.5   +00 34 47     1.186    2.134  155.0   11.4   282   26.0 
2026-10-09 00:00 UT   02 30 07.2   +00 21 54     1.175    2.127  156.0   11.0   284   26.0 
2026-10-10 00:00 UT   02 29 19.9   +00 08 51     1.165    2.120  156.9   10.7   286   25.9 
2026-10-11 00:00 UT   02 28 30.5   +00 04 21     1.155    2.113  157.8   10.3   288   25.9 
2026-10-12 00:00 UT   02 27 39.1   +00 17 41     1.145    2.106  158.7    9.9   291   25.9 
2026-10-13 00:00 UT   02 26 45.7   +00 31 08     1.135    2.099  159.5    9.6   294   25.8 
2026-10-14 00:00 UT   02 25 50.3   +00 44 42     1.126    2.092  160.3    9.2   296   25.8 
2026-10-15 00:00 UT   02 24 53.1   +00 58 21     1.117    2.085  161.1    8.9   300   25.7 
2026-10-16 00:00 UT   02 23 54.0   -01 12 07     1.108    2.078  161.8    8.6   303   25.7 
2026-10-17 00:00 UT   02 22 53.1   -01 25 56     1.099    2.071  162.4    8.4   307   25.7 
2026-10-18 00:00 UT   02 21 50.4   -01 39 49     1.091    2.064  163.0    8.1   311   25.6 
2026-10-19 00:00 UT   02 20 46.0   -01 53 46     1.083    2.057  163.4    7.9   315   25.6 
2026-10-20 00:00 UT   02 19 40.0   -02 07 44     1.075    2.050  163.8    7.8   320   25.6 
2026-10-21 00:00 UT   02 18 32.4   -02 21 43     1.067    2.043  164.1    7.7   324   25.6 
2026-10-22 00:00 UT   02 17 23.3   -02 35 42     1.060    2.036  164.3    7.6   329   25.5 
2026-10-23 00:00 UT   02 16 12.8   -02 49 41     1.053    2.029  164.4    7.6   334   25.5 
2026-10-24 00:00 UT   02 15 00.8   -03 03 38     1.046    2.022  164.4    7.6   339   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.