C/2017 T3 (ATLAS)
ephemeris date magn radius delta ra dec elong phase
Perihelion19 Jul 20189.00.825 AU1.425 AU06h41m-09°04'34.6°44.4°
Today23 Jul 20189.10.829 AU1.389 AU07h05m-12°37'36.3°46.5°
Nearest approach1 Aug 20189.10.860 AU1.351 AU08h04m-20°10'39.5°48.7°
C/2017 T3 (ATLAS) - 2018-07-23
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/2017 T3 (ATLAS), as provided by the minor planet center, are:

            e (eccentricity)                : 0.999384
            q (perihelion distance)         : 0.825354
            i (inclination)                 : 88.1082
            Ω (Longitude of ascending node) : 230.0856
            ω (Argument of perihelion)      : 246.8866
            L (Longitude of perihelion)     : 234.5084
            B (Latitude of perihelion)      : -66.8135
            T (Time of perihelion passage)  : 2458318.6510
            P (Orbital period in years)     : > 9999.99 

            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 Two lightcurves are shown: The gray curve is based on the absolute magnitide and slope parameter as provided by the minor planet center (10.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 9.14 + 5 log[∆] + 10.65 log[r]).