C/2018 Y1 (Iwamoto)
ephemeris date magn radius delta ra dec elong phase PA
Perihelion4 Feb 20197.21.287 AU0.410 AU12h16m-04°15'129.7°36.1°295°
Nearest approach11 Feb 20196.61.291 AU0.306 AU09h59m+19°09'172.9°5.4°225°
Today16 Apr 202432.215.452 AU16.341 AU23h51m+10°21'26.7°1.7°268°
C/2018 Y1 (Iwamoto)- 2024-04-16

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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)                : 0.9898780
            q (Perihelion distance)         : 1.2869760
            i (Inclination)                 : 160.44290
            Ω (Longitude of ascending node) : 147.41470
            ω (Argument of perihelion)      : 357.86790
            L (Longitude of perihelion)     : 149.42390
            B (Latitude of perihelion)      : -0.71357
            T (Time of perihelion passage)  : 2458519.13150
            P (Orbital period in years)     : 1433.69

            Epoch                           : 2024 Apr 15
            Reference                       : MPEC 2024-A43

            Classification(s):              : Nearly isotropic; Returning (a < 10000 AU); External (P > 200 years)

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 7.46 + 5 log[∆] + 15.68 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.