C/2019 JU6 (ATLAS)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Perihelion	2 Jun 2019	18.5	2.031 AU	1.502 AU	20h27m	+27°41'	106.1°	28.7°	233°
Nearest approach	25 Jun 2019	18.2	2.049 AU	1.281 AU	18h11m	+30°43'	125.9°	23.7°	179°
Today	12 Jul 2025	33.0	16.987 AU	17.685 AU	09h32m	-11°02'	45.4°	2.4°	137°

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 JU6 (ATLAS) are:

            e (Eccentricity)                : 0.9998470
            q (Perihelion distance)         : 2.0312530
            i (Inclination)                 : 148.29770
            Ω (Longitude of ascending node) : 21.68240
            ω (Argument of perihelion)      : 94.76260
            L (Longitude of perihelion)     : 106.08945
            B (Latitude of perihelion)      : 31.58019
            T (Time of perihelion passage)  : 2458637.39850

            Epoch                           : 2025 Jul 11
            Reference                       : MPEC 2022-M21

            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 light curve is based on the absolute magnitude and slope parameter as calculated from an MPEC, or the latest values provided by the minor planet center. (14.50 + 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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-07-12 00:00 UT   09 32 33.3   -11 02 52    17.682   16.986   45.6    2.4   137   33.0 
2025-07-12 05:49 UT   09 32 35.6   -11 02 54    17.685   16.987   45.4    2.4   137   33.0 
2025-07-13 00:00 UT   09 32 42.7   -11 02 59    17.697   16.992   44.8    2.4   137   33.0 
2025-07-14 00:00 UT   09 32 52.3   -11 03 07    17.712   16.997   44.1    2.4   138   33.0 
2025-07-15 00:00 UT   09 33 01.9   -11 03 17    17.727   17.003   43.3    2.4   139   33.0 
2025-07-16 00:00 UT   09 33 11.6   -11 03 29    17.742   17.008   42.6    2.3   140   33.1 
2025-07-17 00:00 UT   09 33 21.4   -11 03 42    17.756   17.014   41.9    2.3   140   33.1 
2025-07-18 00:00 UT   09 33 31.3   -11 03 57    17.771   17.019   41.1    2.3   141   33.1 
2025-07-19 00:00 UT   09 33 41.2   -11 04 14    17.785   17.025   40.4    2.2   142   33.1 
2025-07-20 00:00 UT   09 33 51.2   -11 04 32    17.799   17.030   39.7    2.2   143   33.1 
2025-07-21 00:00 UT   09 34 01.3   -11 04 52    17.813   17.036   39.0    2.2   144   33.1 
2025-07-22 00:00 UT   09 34 11.5   -11 05 14    17.826   17.041   38.3    2.1   145   33.1 

    Terminology:
            
    delta:  distance between comet and earth in AU
    radius: distance between comet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-comet)    
    phase:  phase angle in degrees (angle sun-comet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km      
    

Orbital elements usually provided by the MPC (Minor Planet Center).
Observations contributed by observers worldwide, via COBS (Comet Observation Database) or the MPC (Minor Planet Center)
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.