C/2013 US10 (Catalina)
ephemeris date magn radius delta ra dec elong phase PA
Perihelion16 Nov 20156.30.825 AU1.746 AU14h22m-19°03'14.3°17.2°270°
Nearest approach17 Jan 20166.11.383 AU0.725 AU13h49m+53°57'107.1°42.8°282°
Today14 Dec 201818.611.140 AU10.368 AU02h34m+42°12'140.0°3.3°105°
C/2013 US10 (Catalina) - 2018-12-14

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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 C/2013 US10 (Catalina), as provided by the minor planet center, are:

            e (eccentricity)                : 1.0005080
            q (perihelion distance)         : 0.82459
            i (inclination)                 : 148.85120
            Ω (Longitude of ascending node) : 186.22150
            ω (Argument of perihelion)      : 340.48660
            L (Longitude of perihelion)     : 203.09350
            B (Latitude of perihelion)      : -9.94948
            T (Time of perihelion passage)  : 2457342.40900
            P (Orbital period in years)     : > 9999.99 

            Family/Group:                   : Nearly isotropic

The lightcurve 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 Two lightcurves are shown: The gray curve is based on the absolute magnitide and slope parameter as provided by the minor planet center (4.40 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 5.74 + 5 log[∆] + 7.46 log[r]).

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