(797455) 2011 HJ7
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	3 Dec 2025	25.4	1.636 AU	1.242 AU	10h36m	+10°20'	93.8°	36.9°

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 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
2025-12-03 00:00 UT   10 36 44.8   +10 20 23     1.242    1.636   93.8   36.9   292   25.4 
2025-12-03 02:52 UT   10 36 49.7   +10 20 01     1.242    1.637   93.9   36.9   292   25.4 
2025-12-04 00:00 UT   10 37 24.9   +10 17 20     1.235    1.641   94.6   36.8   292   25.3 
2025-12-05 00:00 UT   10 38 02.9   +10 14 30     1.227    1.646   95.5   36.6   292   25.3 
2025-12-06 00:00 UT   10 38 38.8   +10 11 52     1.220    1.651   96.4   36.4   292   25.3 
2025-12-07 00:00 UT   10 39 12.7   +10 09 26     1.212    1.656   97.2   36.2   292   25.3 
2025-12-08 00:00 UT   10 39 44.4   +10 07 13     1.205    1.660   98.1   36.0   292   25.3 
2025-12-09 00:00 UT   10 40 14.0   +10 05 14     1.197    1.665   99.0   35.8   292   25.3 
2025-12-10 00:00 UT   10 40 41.3   +10 03 28     1.189    1.669   99.9   35.5   292   25.3 
2025-12-11 00:00 UT   10 41 06.3   +10 01 56     1.181    1.674  100.8   35.3   292   25.3 
2025-12-12 00:00 UT   10 41 29.1   +10 00 39     1.174    1.678  101.7   35.1   292   25.2 
2025-12-13 00:00 UT   10 41 49.5   +09 59 35     1.166    1.683  102.7   34.8   292   25.2 
2025-12-14 00:00 UT   10 42 07.5   +09 58 47     1.158    1.687  103.6   34.6   292   25.2 
2025-12-15 00:00 UT   10 42 23.0   +09 58 14     1.150    1.691  104.6   34.3   292   25.2 
2025-12-16 00:00 UT   10 42 36.1   +09 57 56     1.142    1.696  105.5   34.0   292   25.2 
2025-12-17 00:00 UT   10 42 46.6   +09 57 53     1.134    1.700  106.5   33.7   292   25.2 
2025-12-18 00:00 UT   10 42 54.5   +09 58 07     1.127    1.704  107.5   33.4   292   25.1 
2025-12-19 00:00 UT   10 42 59.8   +09 58 37     1.119    1.708  108.5   33.1   291   25.1 
2025-12-20 00:00 UT   10 43 02.4   +09 59 23     1.111    1.712  109.5   32.8   291   25.1 
2025-12-21 00:00 UT   10 43 02.3   +10 00 27     1.103    1.716  110.5   32.5   291   25.1 
2025-12-22 00:00 UT   10 42 59.4   +10 01 47     1.095    1.720  111.6   32.1   291   25.1 
2025-12-23 00:00 UT   10 42 53.6   +10 03 24     1.087    1.724  112.6   31.8   291   25.0 
2025-12-24 00:00 UT   10 42 45.1   +10 05 19     1.080    1.728  113.7   31.4   291   25.0 
2025-12-25 00:00 UT   10 42 33.6   +10 07 31     1.072    1.732  114.8   31.0   291   25.0 
2025-12-26 00:00 UT   10 42 19.1   +10 10 02     1.064    1.736  115.8   30.7   291   25.0 
2025-12-27 00:00 UT   10 42 01.7   +10 12 50     1.057    1.740  116.9   30.3   291   24.9 
2025-12-28 00:00 UT   10 41 41.2   +10 15 56     1.049    1.743  118.1   29.9   291   24.9 
2025-12-29 00:00 UT   10 41 17.7   +10 19 21     1.042    1.747  119.2   29.4   291   24.9 
2025-12-30 00:00 UT   10 40 51.1   +10 23 03     1.034    1.751  120.3   29.0   291   24.9 
2025-12-31 00:00 UT   10 40 21.3   +10 27 05     1.027    1.754  121.5   28.6   291   24.9 
2026-01-01 00:00 UT   10 39 48.4   +10 31 25     1.020    1.758  122.7   28.1   291   24.8 
2026-01-02 00:00 UT   10 39 12.2   +10 36 03     1.013    1.761  123.8   27.6   291   24.8 

    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.