C/2018 N1 (NEOWISE)
ephemeris date magn radius delta ra dec elong phase PA
Nearest approach26 Jul 20188.41.312 AU0.307 AU20h21m-36°24'162.9°13.2°
Perihelion1 Aug 20188.81.309 AU0.380 AU17h32m-29°50'134.3°33.7°86°
Today15 Aug 202023.57.910 AU8.829 AU11h14m+20°44'23.4°2.9°77°
C/2018 N1 (NEOWISE)- 2020-08-15
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 N1 (NEOWISE), as provided by the minor planet center, are:

            e (eccentricity)                : 0.9961560
            q (perihelion distance)         : 1.3090590
            i (inclination)                 : 159.44560
            Ω (Longitude of ascending node) : 292.44100
            ω (Argument of perihelion)      : 354.59850
            L (Longitude of perihelion)     : 297.50048
            B (Latitude of perihelion)      : -1.89399
            T (Time of perihelion passage)  : 2458332.40850
            P (Orbital period in years)     : 6284.40
            Epoch                           : 2020 Aug 14

            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. 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 (15.50 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 9.76 + 5 log[∆] + 10.00 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.





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