C/2018 Y1 (Iwamoto)
ephemeris date magn radius delta ra dec elong phase PA
Perihelion6 Feb 20197.11.284 AU0.379 AU12h03m-02°52'135.5°32.6°296°
Nearest approach12 Feb 20196.61.287 AU0.301 AU10h00m+17°49'174.2°4.4°225°
Today20 Oct 202127.89.689 AU8.769 AU00h04m+16°47'156.2°2.4°103°
C/2018 Y1 (Iwamoto)- 2021-10-20
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 C/2018 Y1 (Iwamoto) are:

            e (eccentricity)                : 0.9906530
            q (perihelion distance)         : 1.2840360
            i (inclination)                 : 160.39860
            Ω (Longitude of ascending node) : 147.51490
            ω (Argument of perihelion)      : 357.98870
            L (Longitude of perihelion)     : 149.40973
            B (Latitude of perihelion)      : -0.67462
            T (Time of perihelion passage)  : 2458521.34410

            Epoch                           : 2021 Oct 19
            Reference                       : MPC118842

            Classification(s):              : Nearly isotropic; New (a > 10000 AU)
        

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 (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 7.51 + 5 log[∆] + 15.77 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.