A/2020 H9
ephemeris date magn radius delta ra dec elong phase PA
Perihelion21 Dec 201922.52.579 AU3.441 AU16h51m-44°17'24.6°9.1°217°
Nearest approach22 Apr 202021.22.889 AU1.904 AU14h32m-24°27'165.8°4.9°327°
Today25 Sep 202023.83.849 AU4.804 AU13h05m+06°10'15.9°4.1°64°
A/2020 H9- 2020-09-25
astro.vanbuitenen.nl


 
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The interactive orbit chart above shows the comet'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 A/2020 H9, as provided by the minor planet center, are:

            e (eccentricity)                : 0.9950550
            q (perihelion distance)         : 2.5790490
            i (inclination)                 : 137.86930
            Ω (Longitude of ascending node) : 213.11940
            ω (Argument of perihelion)      : 312.87950
            L (Longitude of perihelion)     : 251.73192
            B (Latitude of perihelion)      : -29.44388
            T (Time of perihelion passage)  : 2458838.83150
            P (Orbital period in years)     : > 9999.99 
            Epoch                           : 2020 Sep 24

            Family/Group:                   : Nearly isotropic
        

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations respectively from COBS or the MPC. The gray curve indicates the expected brightness if this object is a comet (18.00 + 5 log[∆] + 5.00 log[r]), whereas the red curve indicates the expected lightcurve for an asteroid (H=17.10; G=.15).


The all-sky chart below shows the path of the comet over the same period as the light curve. The comet's current position is marked yellow.





The following chart shows the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found further down this page as well.


The following chart shows the current location of the comet in a smaller, upside-down telescopic field of view.


A printable version of the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.