C/2019 T4 (ATLAS)
ephemeris date magn radius delta ra dec elong phase PA
Today25 Feb 202114.25.693 AU5.121 AU08h02m-38°26'120.9°8.6°45°
Nearest approach4 Apr 202210.94.277 AU3.330 AU11h50m-20°40'158.6°4.9°48°
Perihelion9 Jun 202211.24.242 AU3.899 AU11h51m-07°30'102.9°13.5°112°
C/2019 T4 (ATLAS)- 2021-02-25

-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/2019 T4 (ATLAS), as provided by the minor planet center, are:

            e (eccentricity)                : 0.9958920
            q (perihelion distance)         : 4.2419070
            i (inclination)                 : 53.61870
            Ω (Longitude of ascending node) : 199.95340
            ω (Argument of perihelion)      : 351.21630
            L (Longitude of perihelion)     : 194.71672
            B (Latitude of perihelion)      : -7.06185
            T (Time of perihelion passage)  : 2459739.76900

            Epoch                           : 2021 Feb 13
            Reference                       : MPEC 2021-BE3

            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 (5.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently -3.67 + 5 log[∆] + 18.98 log[r]).