(2016) Heinemann
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	1 May 2026	17.1	3.178 AU	2.376 AU	17h35m	-24°19'	135.9°	12.7°
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)      : 339.97734
            M (Mean anomaly)                : 247.72948
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : -3.03159
            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
2026-05-01 00:00 UT   17 35 15.6   -24 19 13     2.376    3.178  135.9   12.7   273   17.1 
2026-05-01 22:02 UT   17 35 00.3   -24 19 25     2.365    3.176  136.9   12.5   274   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 21.3   -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 
2026-05-06 00:00 UT   17 33 38.3   -24 20 10     2.320    3.169  141.1   11.5   274   17.0 
2026-05-07 00:00 UT   17 33 14.7   -24 20 18     2.309    3.167  142.2   11.3   274   17.0 
2026-05-08 00:00 UT   17 32 49.8   -24 20 24     2.299    3.165  143.2   11.0   274   17.0 
2026-05-09 00:00 UT   17 32 23.5   -24 20 30     2.288    3.163  144.3   10.7   274   17.0 
2026-05-10 00:00 UT   17 31 55.9   -24 20 34     2.278    3.162  145.4   10.5   274   16.9 
2026-05-11 00:00 UT   17 31 27.0   -24 20 36     2.268    3.160  146.5   10.2   274   16.9 
2026-05-12 00:00 UT   17 30 56.8   -24 20 38     2.259    3.158  147.5    9.9   275   16.9 
2026-05-13 00:00 UT   17 30 25.3   -24 20 37     2.249    3.156  148.6    9.6   275   16.9 
2026-05-14 00:00 UT   17 29 52.6   -24 20 35     2.240    3.154  149.7    9.3   275   16.8 
2026-05-15 00:00 UT   17 29 18.6   -24 20 32     2.231    3.152  150.8    9.0   275   16.8 
2026-05-16 00:00 UT   17 28 43.4   -24 20 27     2.223    3.151  151.9    8.7   275   16.8 
2026-05-17 00:00 UT   17 28 07.1   -24 20 20     2.214    3.149  153.0    8.4   275   16.8 
2026-05-18 00:00 UT   17 27 29.6   -24 20 12     2.206    3.147  154.1    8.1   276   16.8 
2026-05-19 00:00 UT   17 26 51.0   -24 20 02     2.198    3.145  155.2    7.8   276   16.7 
2026-05-20 00:00 UT   17 26 11.4   -24 19 50     2.190    3.143  156.3    7.4   276   16.7 
2026-05-21 00:00 UT   17 25 30.7   -24 19 36     2.183    3.141  157.4    7.1   276   16.7 
2026-05-22 00:00 UT   17 24 48.9   -24 19 20     2.176    3.140  158.6    6.8   276   16.7 
2026-05-23 00:00 UT   17 24 06.3   -24 19 03     2.169    3.138  159.7    6.4   277   16.6 
2026-05-24 00:00 UT   17 23 22.6   -24 18 43     2.162    3.136  160.8    6.1   277   16.6 
2026-05-25 00:00 UT   17 22 38.1   -24 18 22     2.155    3.134  161.9    5.8   277   16.6 
2026-05-26 00:00 UT   17 21 52.8   -24 17 58     2.149    3.132  163.1    5.4   278   16.6 
2026-05-27 00:00 UT   17 21 06.6   -24 17 33     2.143    3.130  164.2    5.1   278   16.5 
2026-05-28 00:00 UT   17 20 19.7   -24 17 06     2.138    3.128  165.3    4.7   278   16.5 
2026-05-29 00:00 UT   17 19 32.1   -24 16 36     2.132    3.127  166.5    4.4   279   16.5 
2026-05-30 00:00 UT   17 18 43.8   -24 16 04     2.127    3.125  167.6    4.0   279   16.5 
2026-05-31 00:00 UT   17 17 54.8   -24 15 31     2.122    3.123  168.7    3.6   280   16.4 

    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.