(2016) Heinemann
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	9 Jun 2026	16.1	3.105 AU	2.090 AU	17h09m	-24°08'	178.8°	0.4°
Today	16 Jul 2026	16.8	3.037 AU	2.193 AU	16h43m	-23°28'	139.4°	12.6°

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 Heinemann are:

            e (Eccentricity)                : 0.1899989
            a (Semimajor axis)              : 3.1319350
            i (Inclination)                 : 0.91745
            Ω (Longitude of ascending node) : 16.98338
            ω (Argument of perihelion)      : 339.92502
            M (Mean anomaly)                : 283.35011
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : -3.08923
            B (Latitude of perihelion)      : -0.31490
            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
2026-07-16 00:00 UT   16 43 33.4   -23 28 04     2.193    3.037  139.4   12.6    96   16.8 
2026-07-16 17:02 UT   16 43 16.4   -23 27 25     2.198    3.036  138.6   12.8    96   16.8 
2026-07-17 00:00 UT   16 43 09.7   -23 27 10     2.200    3.035  138.3   12.9    96   16.8 
2026-07-18 00:00 UT   16 42 47.4   -23 26 18     2.207    3.033  137.3   13.1    96   16.9 
2026-07-19 00:00 UT   16 42 26.5   -23 25 28     2.215    3.031  136.2   13.4    96   16.9 
2026-07-20 00:00 UT   16 42 07.0   -23 24 40     2.222    3.029  135.2   13.7    96   16.9 
2026-07-21 00:00 UT   16 41 49.0   -23 23 54     2.230    3.028  134.2   13.9    97   16.9 
2026-07-22 00:00 UT   16 41 32.4   -23 23 11     2.238    3.026  133.2   14.2    97   16.9 
2026-07-23 00:00 UT   16 41 17.3   -23 22 30     2.247    3.024  132.2   14.4    97   16.9 
2026-07-24 00:00 UT   16 41 03.6   -23 21 51     2.255    3.022  131.2   14.7    97   17.0 
2026-07-25 00:00 UT   16 40 51.5   -23 21 15     2.264    3.020  130.1   14.9    97   17.0 
2026-07-26 00:00 UT   16 40 40.8   -23 20 41     2.272    3.018  129.2   15.1    97   17.0 
2026-07-27 00:00 UT   16 40 31.5   -23 20 10     2.281    3.016  128.2   15.4    97   17.0 
2026-07-28 00:00 UT   16 40 23.8   -23 19 41     2.290    3.014  127.2   15.6    97   17.0 
2026-07-29 00:00 UT   16 40 17.5   -23 19 15     2.299    3.013  126.2   15.8    97   17.0 
2026-07-30 00:00 UT   16 40 12.7   -23 18 51     2.309    3.011  125.2   16.0    97   17.0 
2026-07-31 00:00 UT   16 40 09.4   -23 18 31     2.318    3.009  124.3   16.2    97   17.1 
2026-08-01 00:00 UT   16 40 07.6   -23 18 12     2.328    3.007  123.3   16.4    97   17.1 
2026-08-02 00:00 UT   16 40 07.2   -23 17 57     2.337    3.005  122.3   16.6    97   17.1 
2026-08-03 00:00 UT   16 40 08.4   -23 17 44     2.347    3.003  121.4   16.8    97   17.1 
2026-08-04 00:00 UT   16 40 10.9   -23 17 33     2.357    3.001  120.4   16.9    97   17.1 
2026-08-05 00:00 UT   16 40 15.0   -23 17 26     2.367    2.999  119.5   17.1    97   17.1 
2026-08-06 00:00 UT   16 40 20.5   -23 17 20     2.377    2.997  118.6   17.3    97   17.1 
2026-08-07 00:00 UT   16 40 27.4   -23 17 18     2.387    2.996  117.6   17.5    97   17.2 
2026-08-08 00:00 UT   16 40 35.8   -23 17 18     2.398    2.994  116.7   17.6    97   17.2 
2026-08-09 00:00 UT   16 40 45.7   -23 17 21     2.408    2.992  115.8   17.8    97   17.2 
2026-08-10 00:00 UT   16 40 57.0   -23 17 27     2.419    2.990  114.9   17.9    97   17.2 
2026-08-11 00:00 UT   16 41 09.8   -23 17 35     2.429    2.988  113.9   18.1    97   17.2 
2026-08-12 00:00 UT   16 41 24.0   -23 17 45     2.440    2.986  113.0   18.2    97   17.2 
2026-08-13 00:00 UT   16 41 39.6   -23 17 59     2.451    2.984  112.1   18.3    97   17.2 
2026-08-14 00:00 UT   16 41 56.6   -23 18 14     2.462    2.982  111.2   18.5    97   17.2 
2026-08-15 00:00 UT   16 42 15.1   -23 18 32     2.473    2.981  110.4   18.6    97   17.3 

    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.