C/2019 L3 (ATLAS)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	6 Jan 2022	9.4	3.562 AU	2.588 AU	07h06m	+31°47'	170.6°	2.6°	174°
Perihelion	10 Jan 2022	9.4	3.562 AU	2.590 AU	07h02m	+31°08'	169.6°	2.9°	150°
Today	12 Feb 2026	17.4	11.856 AU	11.775 AU	13h34m	-61°03'	92.3°	4.8°	304°

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.)

Light curve

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations from COBS. This lightcurve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 2.3 + 5 log[∆] + 9.1 log[r]). An additional green curve is displayed when an increase in apparent brightness is expected due to forward scattering of sunlight, which occurs when a dust-rich comet is located between the Earth and the Sun. (See Marcus 2007)

Charts

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.

Orbital elements

The orbital elements of C/2019 L3 (ATLAS) are:

    e (Eccentricity)                : 1.0034350
    q (Perihelion distance)         : 3.5617460
    i (Inclination)                 : 48.34710
    Ω (Longitude of ascending node) : 290.70930
    ω (Argument of perihelion)      : 171.80100
    L (Longitude of perihelion)     : 285.23929
    B (Latitude of perihelion)      : 6.11689
    T (Time of perihelion passage)  : 2459589.72160

    Epoch                           : 2026 Feb 11
    Reference                       : MPC185656

    Classification(s):              : Nearly isotropic; New (a > 10000 AU)

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-02-11 00:00 UT   13 34 13.9   -60 59 20    11.782   11.849   91.5    4.8   304   17.4 
2026-02-12 00:00 UT   13 34 04.7   -61 02 29    11.776   11.855   92.1    4.8   304   17.4 
2026-02-12 06:44 UT   13 34 02.0   -61 03 22    11.775   11.856   92.3    4.8   304   17.4 
2026-02-13 00:00 UT   13 33 54.8   -61 05 36    11.771   11.861   92.8    4.8   305   17.4 
2026-02-14 00:00 UT   13 33 44.3   -61 08 40    11.765   11.867   93.5    4.8   306   17.4 
2026-02-15 00:00 UT   13 33 33.2   -61 11 41    11.759   11.872   94.2    4.8   307   17.4 
2026-02-16 00:00 UT   13 33 21.4   -61 14 39    11.753   11.878   94.9    4.8   307   17.4 
2026-02-17 00:00 UT   13 33 09.0   -61 17 34    11.748   11.884   95.5    4.7   308   17.4 
2026-02-18 00:00 UT   13 32 55.9   -61 20 25    11.742   11.890   96.2    4.7   309   17.4 
2026-02-19 00:00 UT   13 32 42.3   -61 23 13    11.737   11.896   96.9    4.7   310   17.4 
2026-02-20 00:00 UT   13 32 28.0   -61 25 58    11.731   11.902   97.6    4.7   311   17.4 
2026-02-21 00:00 UT   13 32 13.1   -61 28 40    11.726   11.908   98.2    4.7   311   17.4 
2026-02-22 00:00 UT   13 31 57.5   -61 31 18    11.720   11.914   98.9    4.7   312   17.4 

    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.