ephemeris date magn radius delta ra dec elong phase PA
Perihelion16 Dec 202011.00.808 AU0.756 AU21h12m-09°16'53.4°77.9°68°
Nearest approach19 Jan 202111.50.975 AU0.534 AU01h02m-05°49'73.3°75.1°71°
Today11 Apr 202118.01.818 AU1.562 AU07h12m+06°09'87.5°33.4°98°
141P/Machholz- 2021-04-11

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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 141P/Machholz, as provided by the minor planet center, are:

            e (eccentricity)                : 0.7357270
            q (perihelion distance)         : 0.8079260
            i (inclination)                 : 13.94490
            Ω (Longitude of ascending node) : 241.84730
            ω (Argument of perihelion)      : 153.54750
            L (Longitude of perihelion)     : 216.07218
            B (Latitude of perihelion)      : 6.16256
            T (Time of perihelion passage)  : 2459199.78200
            P (Orbital period in years)     : 5.35

            Epoch                           : 2021 Apr 10
            Reference                       : MPEC 2021-AJ0

            Classification(s):              : Ecliptic; Jupiter family
            Tisserand (Jupiter)             : 2.710

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 is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (14.70 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 13.07 + 5 log[∆] + 15.44 log[r]).