(797455) 2011 HJ7
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	26 Dec 2025	25.0	1.736 AU	1.064 AU	10h42m	+10°10'	115.8°	30.7°

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
2025-12-26 00:00 UT   10 42 19.1   +10 10 02     1.064    1.736  115.8   30.7   291   25.0 
2025-12-26 09:20 UT   10 42 12.7   +10 11 05     1.061    1.737  116.3   30.5   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 
2026-01-03 00:00 UT   10 38 32.8   +10 41 00     1.006    1.765  125.0   27.1   291   24.8 
2026-01-04 00:00 UT   10 37 50.2   +10 46 16     0.999    1.768  126.2   26.7   290   24.8 
2026-01-05 00:00 UT   10 37 04.2   +10 51 50     0.992    1.771  127.5   26.1   290   24.7 
2026-01-06 00:00 UT   10 36 14.9   +10 57 44     0.985    1.775  128.7   25.6   290   24.7 
2026-01-07 00:00 UT   10 35 22.3   +11 03 56     0.978    1.778  130.0   25.1   290   24.7 
2026-01-08 00:00 UT   10 34 26.2   +11 10 26     0.972    1.781  131.2   24.5   290   24.7 
2026-01-09 00:00 UT   10 33 26.8   +11 17 15     0.966    1.784  132.5   24.0   290   24.6 
2026-01-10 00:00 UT   10 32 23.9   +11 24 22     0.959    1.787  133.8   23.4   290   24.6 
2026-01-11 00:00 UT   10 31 17.6   +11 31 48     0.953    1.790  135.1   22.8   290   24.6 
2026-01-12 00:00 UT   10 30 07.9   +11 39 31     0.947    1.793  136.5   22.2   289   24.5 
2026-01-13 00:00 UT   10 28 54.7   +11 47 32     0.942    1.796  137.8   21.6   289   24.5 
2026-01-14 00:00 UT   10 27 38.2   +11 55 50     0.936    1.799  139.2   20.9   289   24.5 
2026-01-15 00:00 UT   10 26 18.2   +12 04 25     0.931    1.802  140.5   20.3   289   24.5 
2026-01-16 00:00 UT   10 24 54.9   +12 13 16     0.926    1.805  141.9   19.6   289   24.4 
2026-01-17 00:00 UT   10 23 28.3   +12 22 22     0.921    1.808  143.3   19.0   288   24.4 
2026-01-18 00:00 UT   10 21 58.4   +12 31 44     0.916    1.811  144.7   18.3   288   24.4 
2026-01-19 00:00 UT   10 20 25.3   +12 41 20     0.911    1.813  146.2   17.6   288   24.3 
2026-01-20 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 

    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.