(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	7 Aug 2026	17.2	2.996 AU	2.387 AU	16h40m	-23°17'	117.6°	17.5°

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) : 16.98339
            ω (Argument of perihelion)      : 339.92502
            M (Mean anomaly)                : 283.35011
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : -3.08922
            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
2026-08-07 00:00 UT   16 40 27.4   -23 17 18     2.387    2.996  117.6   17.5    97   17.2 
2026-08-07 06:32 UT   16 40 29.6   -23 17 18     2.390    2.995  117.4   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 33     2.473    2.981  110.4   18.6    97   17.3 
2026-08-16 00:00 UT   16 42 34.9   -23 18 53     2.484    2.979  109.5   18.7    97   17.3 
2026-08-17 00:00 UT   16 42 56.2   -23 19 16     2.495    2.977  108.6   18.8    97   17.3 
2026-08-18 00:00 UT   16 43 18.8   -23 19 41     2.506    2.975  107.7   18.9    97   17.3 
2026-08-19 00:00 UT   16 43 42.8   -23 20 09     2.518    2.973  106.8   19.0    97   17.3 
2026-08-20 00:00 UT   16 44 08.1   -23 20 39     2.529    2.971  106.0   19.1    97   17.3 
2026-08-21 00:00 UT   16 44 34.8   -23 21 10     2.540    2.969  105.1   19.2    97   17.3 
2026-08-22 00:00 UT   16 45 02.8   -23 21 44     2.552    2.967  104.3   19.3    97   17.3 
2026-08-23 00:00 UT   16 45 32.2   -23 22 20     2.563    2.966  103.4   19.4    97   17.4 
2026-08-24 00:00 UT   16 46 02.8   -23 22 58     2.575    2.964  102.6   19.4    97   17.4 
2026-08-25 00:00 UT   16 46 34.7   -23 23 38     2.586    2.962  101.7   19.5    97   17.4 
2026-08-26 00:00 UT   16 47 07.9   -23 24 20     2.598    2.960  100.9   19.6    97   17.4 
2026-08-27 00:00 UT   16 47 42.4   -23 25 03     2.609    2.958  100.1   19.7    97   17.4 
2026-08-28 00:00 UT   16 48 18.1   -23 25 49     2.621    2.956   99.2   19.7    97   17.4 
2026-08-29 00:00 UT   16 48 55.0   -23 26 36     2.633    2.954   98.4   19.8    97   17.4 
2026-08-30 00:00 UT   16 49 33.1   -23 27 24     2.644    2.952   97.6   19.8    97   17.4 
2026-08-31 00:00 UT   16 50 12.5   -23 28 14     2.656    2.951   96.8   19.9    97   17.4 
2026-09-01 00:00 UT   16 50 53.1   -23 29 05     2.668    2.949   96.0   19.9    97   17.4 
2026-09-02 00:00 UT   16 51 34.8   -23 29 58     2.680    2.947   95.2   19.9    97   17.5 
2026-09-03 00:00 UT   16 52 17.8   -23 30 52     2.691    2.945   94.4   20.0    97   17.5 
2026-09-04 00:00 UT   16 53 01.9   -23 31 47     2.703    2.943   93.6   20.0    97   17.5 
2026-09-05 00:00 UT   16 53 47.1   -23 32 43     2.715    2.941   92.8   20.0    96   17.5 
2026-09-06 00:00 UT   16 54 33.5   -23 33 41     2.727    2.939   92.0   20.0    96   17.5 

    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.