(2016) Heinemann
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Feb 2026	18.2	3.316 AU	3.571 AU	16h53m	-23°07'	67.2°	15.9°
Opposition	9 Jun 2026	16.1	3.105 AU	2.090 AU	17h09m	-24°08'	178.8°	0.4°

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 Heinemann are:

            e (Eccentricity)                : 0.1901159
            a (Semimajor axis)              : 3.1313175
            i (Inclination)                 : 0.91755
            Ω (Longitude of ascending node) : 16.98874
            ω (Argument of perihelion)      : 339.97732
            M (Mean anomaly)                : 247.72948
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : -3.03158
            B (Latitude of perihelion)      : -0.31415
            P (Orbital period in years)     : 5.54            
        

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
2026-02-11 00:00 UT   16 53 22.8   -23 07 39     3.571    3.316   67.2   15.9   276   18.2 
2026-02-11 01:00 UT   16 53 25.6   -23 07 44     3.571    3.316   67.2   15.9   276   18.2 
2026-02-12 00:00 UT   16 54 29.2   -23 09 37     3.556    3.314   67.9   16.0   276   18.2 
2026-02-13 00:00 UT   16 55 35.0   -23 11 33     3.541    3.312   68.7   16.1   276   18.2 
2026-02-14 00:00 UT   16 56 40.3   -23 13 26     3.526    3.311   69.5   16.2   276   18.2 
2026-02-15 00:00 UT   16 57 45.0   -23 15 17     3.510    3.309   70.2   16.3   276   18.2 
2026-02-16 00:00 UT   16 58 49.1   -23 17 06     3.495    3.307   71.0   16.4   276   18.2 
2026-02-17 00:00 UT   16 59 52.7   -23 18 52     3.479    3.306   71.7   16.5   276   18.2 
2026-02-18 00:00 UT   17 00 55.6   -23 20 36     3.464    3.304   72.5   16.6   276   18.2 
2026-02-19 00:00 UT   17 01 57.8   -23 22 18     3.448    3.302   73.3   16.7   276   18.2 
2026-02-20 00:00 UT   17 02 59.5   -23 23 57     3.433    3.301   74.0   16.7   275   18.1 
2026-02-21 00:00 UT   17 04 00.5   -23 25 34     3.417    3.299   74.8   16.8   275   18.1 
2026-02-22 00:00 UT   17 05 00.8   -23 27 09     3.401    3.297   75.6   16.9   275   18.1 
2026-02-23 00:00 UT   17 06 00.4   -23 28 42     3.385    3.296   76.4   17.0   275   18.1 
2026-02-24 00:00 UT   17 06 59.4   -23 30 13     3.369    3.294   77.2   17.0   275   18.1 
2026-02-25 00:00 UT   17 07 57.7   -23 31 42     3.354    3.292   77.9   17.1   275   18.1 
2026-02-26 00:00 UT   17 08 55.2   -23 33 08     3.338    3.291   78.7   17.2   275   18.1 
2026-02-27 00:00 UT   17 09 52.0   -23 34 33     3.322    3.289   79.5   17.2   275   18.1 
2026-02-28 00:00 UT   17 10 48.1   -23 35 56     3.306    3.287   80.3   17.3   275   18.1 
2026-03-01 00:00 UT   17 11 43.5   -23 37 17     3.290    3.285   81.1   17.3   275   18.1 
2026-03-02 00:00 UT   17 12 38.0   -23 38 35     3.274    3.284   81.9   17.4   275   18.1 
2026-03-03 00:00 UT   17 13 31.9   -23 39 52     3.258    3.282   82.7   17.4   275   18.0 
2026-03-04 00:00 UT   17 14 24.9   -23 41 08     3.242    3.280   83.5   17.5   274   18.0 
2026-03-05 00:00 UT   17 15 17.1   -23 42 21     3.225    3.279   84.3   17.5   274   18.0 
2026-03-06 00:00 UT   17 16 08.6   -23 43 32     3.209    3.277   85.1   17.6   274   18.0 
2026-03-07 00:00 UT   17 16 59.2   -23 44 42     3.193    3.275   85.9   17.6   274   18.0 
2026-03-08 00:00 UT   17 17 48.9   -23 45 50     3.177    3.273   86.7   17.6   274   18.0 
2026-03-09 00:00 UT   17 18 37.8   -23 46 57     3.161    3.272   87.5   17.6   274   18.0 
2026-03-10 00:00 UT   17 19 25.9   -23 48 02     3.145    3.270   88.3   17.7   274   18.0 
2026-03-11 00:00 UT   17 20 13.0   -23 49 05     3.129    3.268   89.1   17.7   274   18.0 
2026-03-12 00:00 UT   17 20 59.3   -23 50 07     3.112    3.267   90.0   17.7   274   17.9 
2026-03-13 00:00 UT   17 21 44.6   -23 51 07     3.096    3.265   90.8   17.7   274   17.9 

    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.