2011 BW11
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Aug 2026	34.7	3.396 AU	3.851 AU	13h04m	-08°23'	56.3°	14.4°

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 2011 BW11 are:

            e (Eccentricity)                : 0.7526904
            a (Semimajor axis)              : 1.9880660
            i (Inclination)                 : 1.55904
            Ω (Longitude of ascending node) : 301.23079
            ω (Argument of perihelion)      : 83.77976
            M (Mean anomaly)                : 120.59356
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 25.00826
            B (Latitude of perihelion)      : 1.54986
            P (Orbital period in years)     : 2.80            
        

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
2026-08-15 00:00 UT   13 04 50.4   -08 23 19     3.851    3.396   56.3   14.4   113   34.7 
2026-08-15 02:49 UT   13 04 55.8   -08 23 50     3.852    3.395   56.2   14.4   113   34.7 
2026-08-16 00:00 UT   13 05 36.7   -08 27 44     3.862    3.394   55.6   14.2   113   34.7 
2026-08-17 00:00 UT   13 06 23.6   -08 32 13     3.873    3.392   54.8   14.1   113   34.7 
2026-08-18 00:00 UT   13 07 10.9   -08 36 45     3.884    3.390   54.1   14.0   113   34.7 
2026-08-19 00:00 UT   13 07 58.8   -08 41 19     3.894    3.388   53.3   13.9   113   34.7 
2026-08-20 00:00 UT   13 08 47.1   -08 45 57     3.905    3.386   52.6   13.7   113   34.7 
2026-08-21 00:00 UT   13 09 36.0   -08 50 37     3.915    3.384   51.8   13.6   113   34.7 
2026-08-22 00:00 UT   13 10 25.3   -08 55 20     3.925    3.382   51.1   13.5   113   34.7 
2026-08-23 00:00 UT   13 11 15.1   -09 00 06     3.935    3.380   50.3   13.3   113   34.7 
2026-08-24 00:00 UT   13 12 05.4   -09 04 54     3.945    3.378   49.6   13.2   113   34.7 
2026-08-25 00:00 UT   13 12 56.1   -09 09 45     3.955    3.376   48.8   13.0   113   34.7 
2026-08-26 00:00 UT   13 13 47.3   -09 14 38     3.964    3.374   48.1   12.9   113   34.7 
2026-08-27 00:00 UT   13 14 39.0   -09 19 34     3.974    3.372   47.4   12.7   113   34.7 
2026-08-28 00:00 UT   13 15 31.1   -09 24 32     3.983    3.370   46.6   12.6   113   34.7 
2026-08-29 00:00 UT   13 16 23.6   -09 29 32     3.992    3.368   45.9   12.4   113   34.7 
2026-08-30 00:00 UT   13 17 16.5   -09 34 35     4.001    3.366   45.2   12.3   113   34.7 
2026-08-31 00:00 UT   13 18 09.9   -09 39 40     4.010    3.364   44.4   12.1   113   34.7 
2026-09-01 00:00 UT   13 19 03.8   -09 44 47     4.018    3.362   43.7   12.0   113   34.7 
2026-09-02 00:00 UT   13 19 58.0   -09 49 56     4.027    3.360   43.0   11.8   113   34.7 
2026-09-03 00:00 UT   13 20 52.7   -09 55 08     4.035    3.358   42.3   11.7   113   34.7 
2026-09-04 00:00 UT   13 21 47.7   -10 00 21     4.043    3.355   41.5   11.5   113   34.7 
2026-09-05 00:00 UT   13 22 43.2   -10 05 36     4.051    3.353   40.8   11.3   113   34.7 
2026-09-06 00:00 UT   13 23 39.1   -10 10 54     4.059    3.351   40.1   11.2   113   34.7 
2026-09-07 00:00 UT   13 24 35.4   -10 16 13     4.066    3.349   39.4   11.0   113   34.7 
2026-09-08 00:00 UT   13 25 32.1   -10 21 34     4.074    3.346   38.6   10.8   113   34.7 
2026-09-09 00:00 UT   13 26 29.1   -10 26 57     4.081    3.344   37.9   10.7   113   34.6 
2026-09-10 00:00 UT   13 27 26.6   -10 32 22     4.088    3.342   37.2   10.5   113   34.6 
2026-09-11 00:00 UT   13 28 24.4   -10 37 48     4.095    3.339   36.5   10.3   113   34.6 
2026-09-12 00:00 UT   13 29 22.7   -10 43 16     4.102    3.337   35.8   10.2   113   34.6 
2026-09-13 00:00 UT   13 30 21.2   -10 48 46     4.108    3.335   35.0   10.0   113   34.6 
2026-09-14 00:00 UT   13 31 20.2   -10 54 17     4.114    3.332   34.3    9.8   113   34.6 

    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.