261P/Larson
ephemeris date magn radius delta ra dec elong phase PA
Perihelion18 Jun 201916.12.013 AU2.274 AU01h24m+14°12'62.3°26.5°251°
Nearest approach3 Nov 201916.52.274 AU1.316 AU03h34m+28°42'160.0°8.6°230°
Today22 Sep 202024.73.594 AU4.146 AU08h46m+17°24'50.6°12.5°285°
261P/Larson- 2020-09-22
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 261P/Larson, as provided by the minor planet center, are:

            e (eccentricity)                : 0.4230730
            q (perihelion distance)         : 2.0133340
            i (inclination)                 : 6.07600
            Ω (Longitude of ascending node) : 291.16200
            ω (Argument of perihelion)      : 67.13460
            L (Longitude of perihelion)     : 358.18081
            B (Latitude of perihelion)      : 5.59696
            T (Time of perihelion passage)  : 2458653.27630
            P (Orbital period in years)     : 6.52
            Epoch                           : 2020 Sep 22

            Family/Group:                   : Jupiter family
            Tisserand (Jupiter)             : 2.967
        

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 (14.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 5.57 + 5 log[∆] + 28.88 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.