(797455) 2011 HJ7
ephemeris date magn radius delta ra dec elong phase
Today19 Feb 202624.01.876 AU0.901 AU09h16m+18°07'165.9°7.4°
(797455) 2011 HJ7 - 2026-02-19
astro.vanbuitenen.nl


 
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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
2026-02-19 00:00 UT   09 16 45.3   +18 07 32     0.901    1.876  165.9    7.4   116   24.0 
2026-02-19 08:27 UT   09 16 01.6   +18 10 32     0.903    1.876  165.4    7.7   116   24.0 
2026-02-20 00:00 UT   09 14 42.0   +18 15 57     0.906    1.877  164.4    8.1   115   24.0 
2026-02-21 00:00 UT   09 12 40.7   +18 24 06     0.910    1.878  162.9    8.9   114   24.1 
2026-02-22 00:00 UT   09 10 41.6   +18 31 58     0.915    1.880  161.4    9.7   114   24.1 
2026-02-23 00:00 UT   09 08 44.8   +18 39 32     0.920    1.881  159.9   10.4   113   24.2 
2026-02-24 00:00 UT   09 06 50.6   +18 46 50     0.926    1.882  158.5   11.1   112   24.2 
2026-02-25 00:00 UT   09 04 58.9   +18 53 49     0.932    1.883  157.0   11.8   112   24.3 
2026-02-26 00:00 UT   09 03 09.9   +19 00 31     0.938    1.884  155.6   12.5   111   24.3 
2026-02-27 00:00 UT   09 01 23.8   +19 06 56     0.944    1.885  154.2   13.2   111   24.3 
2026-02-28 00:00 UT   08 59 40.5   +19 13 03     0.950    1.886  152.7   13.9   110   24.4 
2026-03-01 00:00 UT   08 58 00.2   +19 18 53     0.957    1.887  151.3   14.6   110   24.4 
2026-03-02 00:00 UT   08 56 23.0   +19 24 25     0.964    1.888  149.9   15.2   110   24.5 
2026-03-03 00:00 UT   08 54 48.9   +19 29 40     0.971    1.889  148.6   15.9   109   24.5 
2026-03-04 00:00 UT   08 53 18.0   +19 34 39     0.978    1.889  147.2   16.5   109   24.5 
2026-03-05 00:00 UT   08 51 50.3   +19 39 20     0.986    1.890  145.8   17.1   109   24.6 
2026-03-06 00:00 UT   08 50 25.9   +19 43 46     0.993    1.891  144.5   17.7   108   24.6 
2026-03-07 00:00 UT   08 49 04.7   +19 47 55     1.001    1.892  143.2   18.3   108   24.7 
2026-03-08 00:00 UT   08 47 46.9   +19 51 49     1.010    1.892  141.9   18.9   108   24.7 
2026-03-09 00:00 UT   08 46 32.4   +19 55 27     1.018    1.893  140.6   19.5   108   24.7 
2026-03-10 00:00 UT   08 45 21.3   +19 58 49     1.026    1.893  139.3   20.0   107   24.8 
2026-03-11 00:00 UT   08 44 13.6   +20 01 57     1.035    1.894  138.0   20.5   107   24.8 
2026-03-12 00:00 UT   08 43 09.3   +20 04 50     1.044    1.894  136.8   21.0   107   24.8 
2026-03-13 00:00 UT   08 42 08.3   +20 07 29     1.053    1.895  135.5   21.6   107   24.9 


    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.