C/2017 T3 (ATLAS)
ephemeris date magn radius delta ra dec elong phase PA
Perihelion19 Jul 20189.10.823 AU1.421 AU06h43m-09°09'34.7°44.7°210°
Nearest approach1 Aug 20189.20.860 AU1.348 AU08h07m-20°32'39.6°48.8°194°
Today29 Mar 202327.314.960 AU14.425 AU16h11m+21°17'120.7°3.3°252°
C/2017 T3 (ATLAS)- 2023-03-29

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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) are:

            e (Eccentricity)                : 0.9993530
            q (Perihelion distance)         : 0.8227060
            i (Inclination)                 : 88.26950
            Ω (Longitude of ascending node) : 230.24030
            ω (Argument of perihelion)      : 246.79060
            L (Longitude of perihelion)     : 234.26877
            B (Latitude of perihelion)      : -66.72973
            T (Time of perihelion passage)  : 2458318.88140

            Epoch                           : 2023 Mar 28
            Reference                       : MPC114600

            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 (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 9.26 + 5 log[∆] + 10.42 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.