A/2019 Y5
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Perihelion	18 Aug 2019	21.4	4.914 AU	4.885 AU	04h47m	-34°37'	85.7°	11.9°	251°
Nearest approach	10 Nov 2019	21.1	4.957 AU	4.320 AU	03h54m	-36°16'	125.1°	9.4°	343°
Today	21 Jan 2020	21.5	5.061 AU	4.942 AU	02h53m	-22°59'	91.3°	11.2°	68°

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 A/2019 Y5, as provided by the minor planet center, are:

            e (eccentricity)                : 0.9938080
            q (perihelion distance)         : 4.9144077
            i (inclination)                 : 82.83422
            Ω (Longitude of ascending node) : 51.77753
            ω (Argument of perihelion)      : 303.49901
            L (Longitude of perihelion)     : 41.10421
            B (Latitude of perihelion)      : -55.83075
            T (Time of perihelion passage)  : 2458713.65629
            P (Orbital period in years)     : > 9999.99 
            Epoch                           : 2020 May 31

            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. Two light curves are shown: The gray curve indicates the expected brightness if this object is a comet (11.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve indicates the expected lightcurve for an asteroid (H=13.80; G=.15).

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.