C/2018 R3 (Lemmon)
ephemeris date magn radius delta ra dec elong phase PA
Nearest approach22 May 201911.61.311 AU1.922 AU03h31m+59°43'39.6°29.5°350°
Perihelion7 Jun 201911.51.291 AU1.961 AU05h43m+58°04'36.3°27.7°17°
Today22 Sep 201915.72.012 AU2.911 AU10h29m+04°55'21.6°10.6°281°
C/2018 R3 (Lemmon) - 2019-09-22

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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/2018 R3 (Lemmon), as provided by the minor planet center, are:

            e (eccentricity)                : 0.9993296
            q (perihelion distance)         : 1.29058
            i (inclination)                 : 69.71534
            Ω (Longitude of ascending node) : 324.62538
            ω (Argument of perihelion)      : 112.87744
            L (Longitude of perihelion)     : 285.21818
            B (Latitude of perihelion)      : 59.79134
            T (Time of perihelion passage)  : 2458641.69940
            P (Orbital period in years)     : > 9999.99 

            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. Two light curves are shown: The gray curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (11.50 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 8.13 + 5 log[∆] + 17.17 log[r]).

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.