ephemeris date magn radius delta ra dec elong phase PA
Perihelion5 Nov 202016.84.632 AU5.329 AU17h19m-01°52'41.4°8.1°68°
Nearest approach24 May 202116.54.900 AU3.896 AU16h39m-17°07'171.4°1.8°243°
Today1 Jun 202321.38.395 AU7.850 AU11h54m-45°22'119.5°6.0°92°
C/2017 Y2 (PANSTARRS)- 2023-06-01

-1 month
-1 week
-1 day
+1 day
+1 week
+1 month

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 Y2 (PANSTARRS) are:

            e (Eccentricity)                : 1.0015090
            q (Perihelion distance)         : 4.6319660
            i (Inclination)                 : 128.44070
            Ω (Longitude of ascending node) : 66.01790
            ω (Argument of perihelion)      : 147.93130
            L (Longitude of perihelion)     : 87.29987
            B (Latitude of perihelion)      : 24.57327
            T (Time of perihelion passage)  : 2459158.61450

            Epoch                           : 2023 May 31
            Reference                       : MPEC 2022-QD9

            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 (15.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 3.96 + 5 log[∆] + 13.90 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.