2017 HP3
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	27 Sep 2026	25.2	1.768 AU	1.643 AU	07h02m	+29°43'	79.9°	33.9°

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 2017 HP3 are:

            e (Eccentricity)                : 0.4162903
            a (Semimajor axis)              : 1.4548020
            i (Inclination)                 : 23.74300
            Ω (Longitude of ascending node) : 54.48748
            ω (Argument of perihelion)      : 236.20410
            M (Mean anomaly)                : 38.97641
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 108.31214
            B (Latitude of perihelion)      : -19.54818
            P (Orbital period in years)     : 1.75            
        

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
2026-09-27 00:00 UT   07 02 59.2   +29 43 12     1.643    1.768   79.9   33.9   278   25.2 
2026-09-27 09:06 UT   07 03 33.4   +29 46 51     1.640    1.770   80.1   33.9   278   25.2 
2026-09-28 00:00 UT   07 04 29.1   +29 52 51     1.636    1.772   80.6   33.9   278   25.2 
2026-09-29 00:00 UT   07 05 57.7   +30 02 36     1.628    1.777   81.2   33.9   278   25.2 
2026-09-30 00:00 UT   07 07 25.3   +30 12 27     1.620    1.781   81.9   33.8   278   25.2 
2026-10-01 00:00 UT   07 08 51.6   +30 22 25     1.612    1.785   82.6   33.8   278   25.2 
2026-10-02 00:00 UT   07 10 16.8   +30 32 29     1.604    1.789   83.3   33.8   278   25.2 
2026-10-03 00:00 UT   07 11 40.7   +30 42 40     1.596    1.793   84.0   33.7   278   25.2 
2026-10-04 00:00 UT   07 13 03.3   +30 52 58     1.588    1.797   84.7   33.7   278   25.2 
2026-10-05 00:00 UT   07 14 24.6   +31 03 24     1.580    1.801   85.4   33.6   278   25.2 
2026-10-06 00:00 UT   07 15 44.7   +31 13 58     1.571    1.805   86.1   33.6   278   25.2 
2026-10-07 00:00 UT   07 17 03.3   +31 24 40     1.563    1.809   86.8   33.5   278   25.2 
2026-10-08 00:00 UT   07 18 20.6   +31 35 30     1.555    1.812   87.6   33.4   278   25.2 
2026-10-09 00:00 UT   07 19 36.4   +31 46 30     1.546    1.816   88.3   33.4   278   25.1 
2026-10-10 00:00 UT   07 20 50.8   +31 57 38     1.538    1.820   89.0   33.3   278   25.1 
2026-10-11 00:00 UT   07 22 03.6   +32 08 56     1.530    1.824   89.8   33.2   278   25.1 
2026-10-12 00:00 UT   07 23 15.0   +32 20 24     1.521    1.828   90.5   33.1   278   25.1 
2026-10-13 00:00 UT   07 24 24.7   +32 32 02     1.513    1.831   91.3   33.0   278   25.1 
2026-10-14 00:00 UT   07 25 32.9   +32 43 50     1.504    1.835   92.1   32.9   278   25.1 
2026-10-15 00:00 UT   07 26 39.4   +32 55 49     1.496    1.839   92.8   32.8   278   25.1 
2026-10-16 00:00 UT   07 27 44.3   +33 07 58     1.487    1.842   93.6   32.7   278   25.1 
2026-10-17 00:00 UT   07 28 47.4   +33 20 19     1.479    1.846   94.4   32.6   278   25.1 
2026-10-18 00:00 UT   07 29 48.8   +33 32 51     1.470    1.849   95.2   32.5   278   25.1 
2026-10-19 00:00 UT   07 30 48.5   +33 45 35     1.462    1.853   96.0   32.3   278   25.0 
2026-10-20 00:00 UT   07 31 46.2   +33 58 31     1.453    1.856   96.8   32.2   278   25.0 
2026-10-21 00:00 UT   07 32 42.2   +34 11 40     1.445    1.860   97.6   32.0   278   25.0 
2026-10-22 00:00 UT   07 33 36.2   +34 25 00     1.436    1.863   98.4   31.9   277   25.0 
2026-10-23 00:00 UT   07 34 28.2   +34 38 34     1.428    1.867   99.2   31.7   277   25.0 

    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.