2021 BA
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	28 Oct 2026	26.2	1.230 AU	0.399 AU	05h52m	-15°38'	117.6°	45.7°

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 BA are:

            e (Eccentricity)                : 0.2305075
            a (Semimajor axis)              : 1.0043988
            i (Inclination)                 : 12.45561
            Ω (Longitude of ascending node) : 116.92712
            ω (Argument of perihelion)      : 98.57956
            M (Mean anomaly)                : 57.74232
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 35.71029
            B (Latitude of perihelion)      : 12.31403
            P (Orbital period in years)     : 1.01            
        

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
2026-10-28 00:00 UT   05 52 13.2   -15 38 39     0.399    1.230  117.6   45.7   294   26.2 
2026-10-28 05:15 UT   05 52 13.4   -15 43 07     0.398    1.230  117.7   45.7   294   26.2 
2026-10-29 00:00 UT   05 52 12.4   -15 59 03     0.394    1.229  118.2   45.4   295   26.2 
2026-10-30 00:00 UT   05 52 07.5   -16 19 29     0.389    1.229  118.7   45.2   296   26.1 
2026-10-31 00:00 UT   05 51 58.3   -16 39 56     0.385    1.228  119.3   44.9   297   26.1 
2026-11-01 00:00 UT   05 51 44.6   -17 00 22     0.380    1.227  119.8   44.6   298   26.1 
2026-11-02 00:00 UT   05 51 26.4   -17 20 48     0.376    1.226  120.4   44.3   299   26.0 
2026-11-03 00:00 UT   05 51 03.5   -17 41 10     0.371    1.225  120.9   44.0   300   26.0 
2026-11-04 00:00 UT   05 50 35.8   -18 01 29     0.366    1.224  121.5   43.7   302   25.9 
2026-11-05 00:00 UT   05 50 03.1   -18 21 42     0.362    1.223  122.1   43.4   303   25.9 
2026-11-06 00:00 UT   05 49 25.4   -18 41 48     0.358    1.222  122.6   43.1   304   25.9 
2026-11-07 00:00 UT   05 48 42.4   -19 01 45     0.353    1.221  123.2   42.8   305   25.8 
2026-11-08 00:00 UT   05 47 54.1   -19 21 31     0.349    1.220  123.7   42.5   306   25.8 
2026-11-09 00:00 UT   05 47 00.4   -19 41 05     0.344    1.218  124.3   42.2   308   25.8 
2026-11-10 00:00 UT   05 46 01.1   -20 00 24     0.340    1.217  124.8   41.9   309   25.7 
2026-11-11 00:00 UT   05 44 56.1   -20 19 27     0.336    1.216  125.3   41.6   311   25.7 
2026-11-12 00:00 UT   05 43 45.4   -20 38 11     0.332    1.214  125.9   41.4   312   25.6 
2026-11-13 00:00 UT   05 42 28.8   -20 56 33     0.327    1.213  126.4   41.1   314   25.6 
2026-11-14 00:00 UT   05 41 06.2   -21 14 33     0.323    1.212  126.9   40.8   315   25.6 
2026-11-15 00:00 UT   05 39 37.7   -21 32 06     0.319    1.210  127.4   40.5   317   25.5 
2026-11-16 00:00 UT   05 38 03.0   -21 49 11     0.315    1.208  127.9   40.2   318   25.5 
2026-11-17 00:00 UT   05 36 22.1   -22 05 44     0.311    1.207  128.4   40.0   320   25.5 
2026-11-18 00:00 UT   05 34 34.9   -22 21 44     0.307    1.205  128.8   39.7   322   25.4 
2026-11-19 00:00 UT   05 32 41.4   -22 37 07     0.303    1.204  129.3   39.5   324   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.