(797455) 2011 HJ7
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	19 Jan 2026	24.3	1.813 AU	0.911 AU	10h20m	+12°41'	146.2°	17.6°

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 2011 HJ7 are:

            e (Eccentricity)                : 0.5161515
            a (Semimajor axis)              : 1.2509868
            i (Inclination)                 : 1.11619
            Ω (Longitude of ascending node) : 34.33000
            ω (Argument of perihelion)      : 297.31232
            M (Mean anomaly)                : 94.46922
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : -28.35325
            B (Latitude of perihelion)      : -0.99174
            P (Orbital period in years)     : 1.40            
        

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
2026-01-19 00:00 UT   10 20 25.3   +12 41 20     0.911    1.813  146.2   17.6   288   24.3 
2026-01-19 02:59 UT   10 20 13.5   +12 42 33     0.911    1.814  146.3   17.5   288   24.3 
2026-01-20 00:00 UT   10 18 48.9   +12 51 10     0.907    1.816  147.6   16.9   288   24.3 
2026-01-21 00:00 UT   10 17 09.5   +13 01 12     0.903    1.819  149.1   16.2   287   24.3 
2026-01-22 00:00 UT   10 15 27.1   +13 11 27     0.899    1.821  150.5   15.4   287   24.2 
2026-01-23 00:00 UT   10 13 41.8   +13 21 52     0.895    1.824  152.0   14.7   287   24.2 
2026-01-24 00:00 UT   10 11 53.6   +13 32 28     0.892    1.826  153.5   13.9   286   24.2 
2026-01-25 00:00 UT   10 10 02.8   +13 43 13     0.889    1.829  155.0   13.2   286   24.1 
2026-01-26 00:00 UT   10 08 09.3   +13 54 06     0.886    1.831  156.5   12.4   285   24.1 
2026-01-27 00:00 UT   10 06 13.4   +14 05 05     0.883    1.833  158.0   11.6   285   24.1 
2026-01-28 00:00 UT   10 04 15.1   +14 16 11     0.881    1.836  159.5   10.8   284   24.0 
2026-01-29 00:00 UT   10 02 14.7   +14 27 22     0.879    1.838  161.0   10.0   284   24.0 
2026-01-30 00:00 UT   10 00 12.2   +14 38 36     0.877    1.840  162.6    9.2   283   24.0 
2026-01-31 00:00 UT   09 58 07.8   +14 49 52     0.875    1.842  164.1    8.4   282   23.9 
2026-02-01 00:00 UT   09 56 01.7   +15 01 10     0.874    1.845  165.6    7.6   281   23.9 
2026-02-02 00:00 UT   09 53 54.0   +15 12 28     0.873    1.847  167.2    6.8   280   23.9 
2026-02-03 00:00 UT   09 51 44.9   +15 23 45     0.872    1.849  168.7    6.0   278   23.8 
2026-02-04 00:00 UT   09 49 34.6   +15 35 00     0.872    1.851  170.2    5.2   276   23.8 

    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.