C/2014 R1 (Borisov)
ephemeris date magn radius delta ra dec elong phase PA
Perihelion16 Nov 201410.81.355 AU1.879 AU12h46m+01°26'44.0°30.5°299°
Nearest approach25 Apr 201516.82.574 AU1.810 AU17h38m-14°52'129.9°17.5°265°
Today18 Jan 202140.117.448 AU18.414 AU20h43m-22°07'10.3°0.6°97°
C/2014 R1 (Borisov)- 2021-01-18

-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/2014 R1 (Borisov), as provided by the minor planet center, are:

            e (eccentricity)                : 0.9920410
            q (perihelion distance)         : 1.3552310
            i (inclination)                 : 9.90660
            Ω (Longitude of ascending node) : 104.01660
            ω (Argument of perihelion)      : 55.80100
            L (Longitude of perihelion)     : 159.41636
            B (Latitude of perihelion)      : 8.18066
            T (Time of perihelion passage)  : 2456977.88620
            P (Orbital period in years)     : 2221.94
            Epoch                           : 2020 Sep 26
            Reference                       : MPC 95211

            Family/Group:                   : Nearly isotropic

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 light curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the minor planet center. (6.50 + 5 log[∆] + 22.00 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.

The following chart shows the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found further down this page as well.