C/2017 D2 (Barros)
ephemeris date magn radius delta ra dec elong phase
Perihelion15 Jul 201715.92.486 AU1.577 AU22h00m-34°12'146.1°13.2°
Nearest approach7 Aug 201715.92.499 AU1.506 AU21h39m-29°47'164.9°6.1°
Today23 Jul 201820.94.536 AU4.585 AU01h49m+39°16'80.9°12.8°
C/2017 D2 (Barros) - 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 D2 (Barros), as provided by the minor planet center, are:

            e (eccentricity)                : 0.998502
            q (perihelion distance)         : 2.485909
            i (inclination)                 : 31.2613
            Ω (Longitude of ascending node) : 331.0352
            ω (Argument of perihelion)      : 334.3524
            L (Longitude of perihelion)     : 308.7205
            B (Latitude of perihelion)      : -12.9803
            T (Time of perihelion passage)  : 2457949.0732
            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 The lightcurve is based on the absolute magnitide and slope parameter as provided the minor planet center (11.00 + 5 log[∆] + 10.00 log[r]).


The all-sky chart below shows the path of of the comet over the same period as the lightcurve. The comet's current position is marked yellow.