2016 HM3
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	7 Jul 2026	29.8	1.869 AU	2.781 AU	08h33m	+20°15'	21.1°	11.3°

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 2016 HM3 are:

            e (Eccentricity)                : 0.5334343
            a (Semimajor axis)              : 2.3152242
            i (Inclination)                 : 2.14348
            Ω (Longitude of ascending node) : 43.49266
            ω (Argument of perihelion)      : 195.76197
            M (Mean anomaly)                : 255.88175
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 59.24415
            B (Latitude of perihelion)      : -0.58213
            P (Orbital period in years)     : 3.52            
        

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
2026-07-07 00:00 UT   08 33 31.3   +20 15 13     2.781    1.869   21.1   11.3   101   29.8 
2026-07-07 10:13 UT   08 34 27.9   +20 11 43     2.780    1.866   21.0   11.2   101   29.8 
2026-07-08 00:00 UT   08 35 44.3   +20 06 57     2.778    1.862   20.7   11.1   101   29.7 
2026-07-09 00:00 UT   08 37 57.7   +19 58 32     2.775    1.855   20.3   11.0   101   29.7 
2026-07-10 00:00 UT   08 40 11.7   +19 49 58     2.772    1.848   19.9   10.8   101   29.7 
2026-07-11 00:00 UT   08 42 26.2   +19 41 16     2.768    1.841   19.5   10.6   101   29.7 
2026-07-12 00:00 UT   08 44 41.2   +19 32 25     2.765    1.834   19.1   10.4   101   29.7 
2026-07-13 00:00 UT   08 46 56.7   +19 23 25     2.761    1.827   18.7   10.3   101   29.7 
2026-07-14 00:00 UT   08 49 12.7   +19 14 16     2.757    1.820   18.3   10.1   101   29.6 
2026-07-15 00:00 UT   08 51 29.3   +19 04 59     2.753    1.813   17.9    9.9   101   29.6 
2026-07-16 00:00 UT   08 53 46.3   +18 55 32     2.750    1.806   17.5    9.7   101   29.6 
2026-07-17 00:00 UT   08 56 03.8   +18 45 56     2.746    1.799   17.1    9.6   102   29.6 
2026-07-18 00:00 UT   08 58 21.9   +18 36 11     2.741    1.792   16.7    9.4   102   29.6 
2026-07-19 00:00 UT   09 00 40.4   +18 26 17     2.737    1.785   16.4    9.2   102   29.5 
2026-07-20 00:00 UT   09 02 59.5   +18 16 14     2.733    1.778   16.0    9.0   102   29.5 
2026-07-21 00:00 UT   09 05 19.0   +18 06 02     2.728    1.771   15.6    8.9   102   29.5 
2026-07-22 00:00 UT   09 07 39.0   +17 55 41     2.724    1.764   15.2    8.7   102   29.5 

    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.