C/2018 R5 (Lemmon)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	28 Sep 2018	19.5	3.722 AU	2.823 AU	22h48m	+23°19'	149.6°	7.8°	132°
Today	15 Nov 2018	19.7	3.650 AU	3.264 AU	22h20m	+04°28'	105.2°	15.2°	72°
Perihelion	10 Jan 2019	20.2	3.621 AU	4.168 AU	22h41m	-06°26'	50.4°	12.1°	67°

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 R5 (Lemmon), as provided by the minor planet center, are:

            e (eccentricity)                : 0.8416360
            q (perihelion distance)         : 3.62126
            i (inclination)                 : 103.75800
            Ω (Longitude of ascending node) : 171.14150
            ω (Argument of perihelion)      : 178.01320
            L (Longitude of perihelion)     : 171.61418
            B (Latitude of perihelion)      : 1.92977
            T (Time of perihelion passage)  : 2458493.48750
            P (Orbital period in years)     : 109.35

            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 The lightcurve is based on the absolute magnitide and slope parameter as provided the minor planet center (11.50 + 5 log[∆] + 10.00 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.

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

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