2017 HP3
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	26 Oct 2026	24.9	1.877 AU	1.402 AU	07h36m	+35°20'	101.7°	31.2°

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) : 54.48747
            ω (Argument of perihelion)      : 236.20410
            M (Mean anomaly)                : 38.97641
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 108.31213
            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
2026-10-26 00:00 UT   07 36 52.2   +35 20 33     1.402    1.877  101.7   31.2   277   24.9 
2026-10-26 15:34 UT   07 37 20.8   +35 29 53     1.397    1.879  102.3   31.1   277   24.9 
2026-10-27 00:00 UT   07 37 35.9   +35 34 60     1.394    1.880  102.6   31.1   277   24.9 
2026-10-28 00:00 UT   07 38 17.5   +35 49 40     1.385    1.883  103.4   30.9   276   24.9 
2026-10-29 00:00 UT   07 38 56.7   +36 04 34     1.377    1.887  104.3   30.7   276   24.9 
2026-10-30 00:00 UT   07 39 33.7   +36 19 43     1.369    1.890  105.2   30.5   276   24.9 
2026-10-31 00:00 UT   07 40 08.2   +36 35 06     1.360    1.893  106.0   30.3   276   24.9 
2026-11-01 00:00 UT   07 40 40.3   +36 50 44     1.352    1.896  106.9   30.1   275   24.9 
2026-11-02 00:00 UT   07 41 09.9   +37 06 36     1.344    1.899  107.8   29.8   275   24.8 
2026-11-03 00:00 UT   07 41 36.9   +37 22 42     1.336    1.902  108.7   29.6   275   24.8 
2026-11-04 00:00 UT   07 42 01.2   +37 39 04     1.328    1.905  109.6   29.4   274   24.8 
2026-11-05 00:00 UT   07 42 22.7   +37 55 40     1.319    1.908  110.5   29.1   274   24.8 
2026-11-06 00:00 UT   07 42 41.5   +38 12 31     1.311    1.911  111.4   28.9   274   24.8 
2026-11-07 00:00 UT   07 42 57.4   +38 29 37     1.304    1.914  112.3   28.6   273   24.8 
2026-11-08 00:00 UT   07 43 10.3   +38 46 57     1.296    1.917  113.3   28.4   273   24.7 
2026-11-09 00:00 UT   07 43 20.1   +39 04 32     1.288    1.920  114.2   28.1   272   24.7 
2026-11-10 00:00 UT   07 43 26.9   +39 22 20     1.280    1.923  115.1   27.8   272   24.7 
2026-11-11 00:00 UT   07 43 30.5   +39 40 23     1.273    1.926  116.1   27.5   271   24.7 
2026-11-12 00:00 UT   07 43 30.8   +39 58 40     1.265    1.929  117.0   27.2   271   24.7 
2026-11-13 00:00 UT   07 43 27.7   +40 17 10     1.258    1.931  118.0   26.9   270   24.6 
2026-11-14 00:00 UT   07 43 21.3   +40 35 53     1.251    1.934  118.9   26.6   270   24.6 
2026-11-15 00:00 UT   07 43 11.4   +40 54 49     1.243    1.937  119.9   26.3   269   24.6 
2026-11-16 00:00 UT   07 42 57.9   +41 13 57     1.236    1.939  120.9   26.0   268   24.6 
2026-11-17 00:00 UT   07 42 40.7   +41 33 17     1.230    1.942  121.8   25.6   268   24.6 
2026-11-18 00:00 UT   07 42 19.8   +41 52 48     1.223    1.945  122.8   25.3   267   24.6 
2026-11-19 00:00 UT   07 41 55.2   +42 12 29     1.216    1.947  123.8   25.0   266   24.5 
2026-11-20 00:00 UT   07 41 26.6   +42 32 20     1.210    1.950  124.7   24.6   265   24.5 
2026-11-21 00:00 UT   07 40 54.1   +42 52 20     1.203    1.952  125.7   24.3   264   24.5 
2026-11-22 00:00 UT   07 40 17.5   +43 12 29     1.197    1.955  126.7   23.9   263   24.5 
2026-11-23 00:00 UT   07 39 36.9   +43 32 44     1.191    1.957  127.7   23.5   262   24.5 

    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.