2015 BZ509
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	27 Jul 2024	24.5	6.021 AU	6.574 AU	12h07m	+13°30'	53.2°	7.8°
Opposition	10 Mar 2025	23.2	5.468 AU	4.500 AU	11h45m	+17°03'	165.8°	2.6°

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 2015 BZ509 are:

            e (Eccentricity)                : 0.3805428
            a (Semimajor axis)              : 5.1374609
            i (Inclination)                 : 163.00058
            Ω (Longitude of ascending node) : 307.38024
            ω (Argument of perihelion)      : 257.38028
            M (Mean anomaly)                : 66.37535
            Epoch                           : 2018 Mar 23

            L (Longitude of perihelion)     : 230.55684
            B (Latitude of perihelion)      : -16.57672
            P (Orbital period in years)     : 11.64            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2024-07-27 00:00 UT   12 07 21.1   +13 30 53     6.574    6.021   53.2    7.8   104   24.5 
2024-07-27 08:57 UT   12 07 22.9   +13 29 47     6.578    6.020   52.9    7.7   104   24.5 
2024-07-28 00:00 UT   12 07 26.2   +13 27 55     6.585    6.019   52.4    7.7   104   24.5 
2024-07-29 00:00 UT   12 07 31.7   +13 24 57     6.597    6.017   51.5    7.6   103   24.5 
2024-07-30 00:00 UT   12 07 37.8   +13 21 58     6.608    6.015   50.6    7.5   103   24.5 
2024-07-31 00:00 UT   12 07 44.2   +13 18 58     6.619    6.012   49.7    7.4   103   24.5 
2024-08-01 00:00 UT   12 07 51.1   +13 15 56     6.630    6.010   48.8    7.3   102   24.5 
2024-08-02 00:00 UT   12 07 58.4   +13 12 54     6.640    6.008   48.0    7.2   102   24.5 
2024-08-03 00:00 UT   12 08 06.1   +13 09 51     6.651    6.006   47.1    7.1   102   24.5 
2024-08-04 00:00 UT   12 08 14.2   +13 06 47     6.661    6.004   46.2    7.0   101   24.5 
2024-08-05 00:00 UT   12 08 22.8   +13 03 43     6.671    6.001   45.4    6.9   101   24.5 
2024-08-06 00:00 UT   12 08 31.7   +13 00 38     6.681    5.999   44.5    6.8   101   24.5 
2024-08-07 00:00 UT   12 08 41.0   +12 57 32     6.690    5.997   43.6    6.7   100   24.5 
2024-08-08 00:00 UT   12 08 50.7   +12 54 25     6.699    5.995   42.8    6.6   100   24.5 
2024-08-09 00:00 UT   12 09 00.8   +12 51 19     6.709    5.992   41.9    6.5   100   24.5 
2024-08-10 00:00 UT   12 09 11.2   +12 48 11     6.718    5.990   41.1    6.4    99   24.5 
2024-08-11 00:00 UT   12 09 22.0   +12 45 03     6.726    5.988   40.2    6.3    99   24.5 
2024-08-12 00:00 UT   12 09 33.2   +12 41 55     6.735    5.986   39.4    6.2    98   24.5 
2024-08-13 00:00 UT   12 09 44.7   +12 38 46     6.743    5.984   38.5    6.1    98   24.5 
2024-08-14 00:00 UT   12 09 56.5   +12 35 37     6.751    5.981   37.7    5.9    97   24.5 
2024-08-15 00:00 UT   12 10 08.6   +12 32 28     6.759    5.979   36.8    5.8    97   24.5 
2024-08-16 00:00 UT   12 10 21.1   +12 29 19     6.767    5.977   36.0    5.7    96   24.5 
2024-08-17 00:00 UT   12 10 33.9   +12 26 10     6.774    5.975   35.2    5.6    96   24.5 
2024-08-18 00:00 UT   12 10 46.9   +12 22 60     6.781    5.972   34.3    5.5    95   24.5 
2024-08-19 00:00 UT   12 11 00.3   +12 19 50     6.788    5.970   33.5    5.4    95   24.5 
2024-08-20 00:00 UT   12 11 14.0   +12 16 41     6.795    5.968   32.7    5.3    94   24.5 
2024-08-21 00:00 UT   12 11 28.0   +12 13 31     6.801    5.966   31.8    5.1    93   24.5 
2024-08-22 00:00 UT   12 11 42.2   +12 10 21     6.807    5.963   31.0    5.0    93   24.5 
2024-08-23 00:00 UT   12 11 56.7   +12 07 12     6.813    5.961   30.2    4.9    92   24.5 
2024-08-24 00:00 UT   12 12 11.5   +12 04 02     6.819    5.959   29.4    4.8    91   24.5 
2024-08-25 00:00 UT   12 12 26.6   +12 00 53     6.824    5.957   28.6    4.7    91   24.4 
2024-08-26 00:00 UT   12 12 41.9   +11 57 43     6.830    5.954   27.8    4.5    90   24.4 

    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.