2020 BC9
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	9 Oct 2026	26.0	2.127 AU	1.175 AU	02h30m	+00°22'	155.9°	11.0°

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
2026-10-09 00:00 UT   02 30 13.6   +00 22 12     1.175    2.127  155.9   11.0   284   26.0 
2026-10-09 09:01 UT   02 29 56.1   +00 17 19     1.171    2.124  156.3   10.9   285   26.0 
2026-10-10 00:00 UT   02 29 26.3   +00 09 09     1.165    2.120  156.9   10.7   286   25.9 
2026-10-11 00:00 UT   02 28 36.9   +00 04 03     1.155    2.113  157.8   10.3   288   25.9 
2026-10-12 00:00 UT   02 27 45.6   +00 17 22     1.145    2.106  158.7    9.9   291   25.9 
2026-10-13 00:00 UT   02 26 52.2   +00 30 50     1.135    2.099  159.5    9.6   294   25.8 
2026-10-14 00:00 UT   02 25 56.9   +00 44 24     1.126    2.092  160.3    9.3   296   25.8 
2026-10-15 00:00 UT   02 24 59.7   +00 58 04     1.116    2.085  161.1    8.9   300   25.7 
2026-10-16 00:00 UT   02 24 00.7   -01 11 49     1.108    2.078  161.8    8.6   303   25.7 
2026-10-17 00:00 UT   02 22 59.8   -01 25 39     1.099    2.071  162.4    8.4   307   25.7 
2026-10-18 00:00 UT   02 21 57.2   -01 39 32     1.090    2.064  163.0    8.1   311   25.6 
2026-10-19 00:00 UT   02 20 52.8   -01 53 28     1.082    2.057  163.4    7.9   315   25.6 
2026-10-20 00:00 UT   02 19 46.9   -02 07 27     1.074    2.050  163.8    7.8   319   25.6 
2026-10-21 00:00 UT   02 18 39.3   -02 21 26     1.067    2.043  164.1    7.7   324   25.5 
2026-10-22 00:00 UT   02 17 30.2   -02 35 26     1.059    2.035  164.3    7.6   329   25.5 
2026-10-23 00:00 UT   02 16 19.7   -02 49 25     1.052    2.028  164.4    7.6   334   25.5 
2026-10-24 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 

    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.