ephemeris date magn radius delta ra dec elong phase PA
Perihelion30 Oct 202223.52.634 AU2.493 AU09h05m+31°14'87.0°22.1°288°
Nearest approach28 Jan 202322.82.689 AU1.732 AU09h21m+32°59'162.9°6.2°212°
Today25 Sep 202325.53.217 AU4.220 AU12h07m-00°53'0.2°0.1°142°
458P/Jahn- 2023-09-25

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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 458P/Jahn are:

            e (Eccentricity)                : 0.3169740
            q (Perihelion distance)         : 2.6341950
            i (Inclination)                 : 13.62810
            Ω (Longitude of ascending node) : 1.58770
            ω (Argument of perihelion)      : 104.80470
            L (Longitude of perihelion)     : -73.19832
            B (Latitude of perihelion)      : 13.16739
            T (Time of perihelion passage)  : 2459882.69210
            P (Orbital period in years)     : 7.57

            Epoch                           : 2023 Sep 24
            Reference                       : MPEC 2023-HD1

            Classification(s):              : Ecliptic; Jupiter family
            Tisserand (Jupiter)             : 2.936

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. (17.30 + 5 log[∆] + 10.00 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.

The following chart shows the current location of the comet in a smaller, upside-down telescopic field of view.

A printable version of the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.