(2016) Heinemann
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Jan 2026	18.3	3.355 AU	3.909 AU	16h24m	-22°07'	49.5°	12.9°
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) : 16.98873
            ω (Argument of perihelion)      : 339.97733
            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
2026-01-18 00:00 UT   16 24 33.7   -22 07 12     3.909    3.355   49.5   12.9   279   18.3 
2026-01-18 23:45 UT   16 25 49.2   -22 10 13     3.896    3.353   50.3   13.0   279   18.3 
2026-01-19 00:00 UT   16 25 50.0   -22 10 15     3.896    3.353   50.3   13.0   279   18.3 
2026-01-20 00:00 UT   16 27 06.1   -22 13 15     3.883    3.352   51.0   13.2   279   18.3 
2026-01-21 00:00 UT   16 28 21.8   -22 16 12     3.870    3.350   51.7   13.3   279   18.3 
2026-01-22 00:00 UT   16 29 37.2   -22 19 07     3.856    3.348   52.4   13.5   278   18.3 
2026-01-23 00:00 UT   16 30 52.3   -22 21 58     3.843    3.347   53.1   13.6   278   18.3 
2026-01-24 00:00 UT   16 32 07.0   -22 24 47     3.830    3.345   53.9   13.7   278   18.3 
2026-01-25 00:00 UT   16 33 21.4   -22 27 33     3.816    3.344   54.6   13.9   278   18.3 
2026-01-26 00:00 UT   16 34 35.4   -22 30 16     3.802    3.342   55.3   14.0   278   18.3 
2026-01-27 00:00 UT   16 35 49.0   -22 32 56     3.789    3.340   56.1   14.2   278   18.3 
2026-01-28 00:00 UT   16 37 02.3   -22 35 33     3.775    3.339   56.8   14.3   278   18.3 
2026-01-29 00:00 UT   16 38 15.1   -22 38 08     3.761    3.337   57.5   14.4   278   18.3 
2026-01-30 00:00 UT   16 39 27.6   -22 40 40     3.747    3.335   58.3   14.5   278   18.3 
2026-01-31 00:00 UT   16 40 39.7   -22 43 10     3.733    3.334   59.0   14.7   277   18.3 
2026-02-01 00:00 UT   16 41 51.3   -22 45 36     3.718    3.332   59.7   14.8   277   18.3 
2026-02-02 00:00 UT   16 43 02.5   -22 48 00     3.704    3.331   60.5   14.9   277   18.3 
2026-02-03 00:00 UT   16 44 13.3   -22 50 21     3.690    3.329   61.2   15.0   277   18.3 
2026-02-04 00:00 UT   16 45 23.7   -22 52 40     3.675    3.327   61.9   15.2   277   18.3 
2026-02-05 00:00 UT   16 46 33.6   -22 54 56     3.661    3.326   62.7   15.3   277   18.3 
2026-02-06 00:00 UT   16 47 43.0   -22 57 10     3.646    3.324   63.4   15.4   277   18.2 
2026-02-07 00:00 UT   16 48 52.0   -22 59 20     3.631    3.322   64.2   15.5   277   18.2 
2026-02-08 00:00 UT   16 50 00.4   -23 01 29     3.616    3.321   64.9   15.6   277   18.2 
2026-02-09 00:00 UT   16 51 08.4   -23 03 35     3.601    3.319   65.7   15.7   277   18.2 
2026-02-10 00:00 UT   16 52 15.9   -23 05 38     3.586    3.317   66.4   15.8   276   18.2 
2026-02-11 00:00 UT   16 53 22.8   -23 07 39     3.571    3.316   67.2   15.9   276   18.2 
2026-02-12 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 

    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.