C/2017 D2 (Barros)
ephemeris date magn radius delta ra dec elong phase PA
Perihelion14 Jul 201715.32.492 AU1.583 AU22h00m-34°09'146.1°13.2°282°
Nearest approach7 Aug 201715.32.505 AU1.511 AU21h38m-29°40'165.1°6.0°331°
Today16 Apr 202126.811.598 AU12.230 AU03h57m+50°10'49.1°3.7°48°
C/2017 D2 (Barros)- 2021-04-16
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)                : 0.9995600
            q (perihelion distance)         : 2.4916830
            i (inclination)                 : 31.25800
            Ω (Longitude of ascending node) : 330.94960
            ω (Argument of perihelion)      : 334.55160
            L (Longitude of perihelion)     : 308.81346
            B (Latitude of perihelion)      : -12.88337
            T (Time of perihelion passage)  : 2457949.40010

            Epoch                           : 2021 Apr 15
            Reference                       : MPC112391

            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 (11.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 10.18 + 5 log[∆] + 10.51 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.