(2016) Heinemann
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	5 Apr 2026	17.6	3.225 AU	2.732 AU	17h34m	-24°08'	110.7°	16.9°
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) : 16.98871
            ω (Argument of perihelion)      : 339.97735
            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
2026-04-05 00:00 UT   17 34 20.1   -24 08 33     2.732    3.225  110.7   16.9   273   17.6 
2026-04-05 11:05 UT   17 34 29.1   -24 08 49     2.725    3.224  111.1   16.8   273   17.6 
2026-04-06 00:00 UT   17 34 39.1   -24 09 07     2.717    3.223  111.6   16.8   273   17.6 
2026-04-07 00:00 UT   17 34 56.9   -24 09 40     2.702    3.221  112.5   16.7   273   17.6 
2026-04-08 00:00 UT   17 35 13.3   -24 10 13     2.687    3.219  113.5   16.6   273   17.6 
2026-04-09 00:00 UT   17 35 28.5   -24 10 44     2.672    3.218  114.4   16.5   273   17.5 
2026-04-10 00:00 UT   17 35 42.4   -24 11 15     2.657    3.216  115.3   16.4   273   17.5 
2026-04-11 00:00 UT   17 35 54.9   -24 11 45     2.643    3.214  116.2   16.2   273   17.5 
2026-04-12 00:00 UT   17 36 06.1   -24 12 14     2.628    3.212  117.2   16.1   273   17.5 
2026-04-13 00:00 UT   17 36 16.0   -24 12 43     2.614    3.210  118.1   16.0   273   17.5 
2026-04-14 00:00 UT   17 36 24.5   -24 13 11     2.599    3.209  119.1   15.9   273   17.4 
2026-04-15 00:00 UT   17 36 31.6   -24 13 38     2.585    3.207  120.0   15.7   273   17.4 
2026-04-16 00:00 UT   17 36 37.4   -24 14 05     2.571    3.205  121.0   15.6   273   17.4 
2026-04-17 00:00 UT   17 36 41.8   -24 14 31     2.557    3.203  121.9   15.4   273   17.4 
2026-04-18 00:00 UT   17 36 44.7   -24 14 56     2.543    3.201  122.9   15.3   273   17.4 
2026-04-19 00:00 UT   17 36 46.3   -24 15 20     2.529    3.200  123.9   15.1   273   17.4 
2026-04-20 00:00 UT   17 36 46.5   -24 15 44     2.516    3.198  124.9   14.9   273   17.3 
2026-04-21 00:00 UT   17 36 45.3   -24 16 07     2.502    3.196  125.8   14.8   273   17.3 
2026-04-22 00:00 UT   17 36 42.7   -24 16 29     2.489    3.194  126.8   14.6   273   17.3 
2026-04-23 00:00 UT   17 36 38.6   -24 16 51     2.476    3.192  127.8   14.4   273   17.3 
2026-04-24 00:00 UT   17 36 33.2   -24 17 12     2.463    3.191  128.8   14.2   273   17.3 
2026-04-25 00:00 UT   17 36 26.3   -24 17 31     2.450    3.189  129.8   14.0   273   17.2 
2026-04-26 00:00 UT   17 36 18.0   -24 17 51     2.437    3.187  130.8   13.8   273   17.2 
2026-04-27 00:00 UT   17 36 08.4   -24 18 09     2.425    3.185  131.8   13.6   273   17.2 
2026-04-28 00:00 UT   17 35 57.3   -24 18 26     2.412    3.183  132.8   13.4   273   17.2 
2026-04-29 00:00 UT   17 35 44.8   -24 18 43     2.400    3.182  133.9   13.2   273   17.2 
2026-04-30 00:00 UT   17 35 30.9   -24 18 58     2.388    3.180  134.9   13.0   273   17.1 
2026-05-01 00:00 UT   17 35 15.6   -24 19 13     2.376    3.178  135.9   12.7   273   17.1 
2026-05-02 00:00 UT   17 34 58.9   -24 19 26     2.365    3.176  136.9   12.5   274   17.1 
2026-05-03 00:00 UT   17 34 40.8   -24 19 39     2.353    3.174  138.0   12.3   274   17.1 
2026-05-04 00:00 UT   17 34 21.4   -24 19 50     2.342    3.172  139.0   12.0   274   17.1 
2026-05-05 00:00 UT   17 34 00.5   -24 20 01     2.331    3.171  140.1   11.8   274   17.0 

    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.