C/2019 K6 (PANSTARRS)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	1 May 2020	19.8	3.920 AU	2.914 AU	14h23m	-18°48'	175.5°	1.1°	34°
Perihelion	18 May 2020	19.8	3.917 AU	2.988 AU	13h46m	-18°40'	153.1°	6.7°	97°
Today	4 Dec 2025	28.9	14.650 AU	13.902 AU	05h53m	-15°58'	138.0°	2.6°	335°

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. 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. (11.5 + 5 log[∆] + 10.0 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 K6 (PANSTARRS) are:

    e (Eccentricity)                : 0.9955050
    q (Perihelion distance)         : 3.9169810
    i (Inclination)                 : 132.39670
    Ω (Longitude of ascending node) : 42.96480
    ω (Argument of perihelion)      : 187.40530
    L (Longitude of perihelion)     : 37.95651
    B (Latitude of perihelion)      : -5.46183
    T (Time of perihelion passage)  : 2458987.65670
    P (Orbital period in years)     : 25723.65

    Epoch                           : 2025 Nov 12
    Reference                       : MPEC 2021-P47

    Classification(s):              : Nearly isotropic; Returning (a < 10000 AU); External (P > 200 years)

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-12-03 00:00 UT   05 53 27.8   -15 58 04    13.900   14.644  137.6    2.6   333   28.9 
2025-12-04 00:00 UT   05 53 07.6   -15 58 26    13.902   14.649  137.9    2.6   335   28.9 
2025-12-04 06:16 UT   05 53 02.3   -15 58 31    13.902   14.650  138.0    2.6   335   28.9 
2025-12-05 00:00 UT   05 52 47.3   -15 58 45    13.904   14.654  138.3    2.6   336   28.9 
2025-12-06 00:00 UT   05 52 26.9   -15 59 00    13.906   14.660  138.6    2.5   338   28.9 
2025-12-07 00:00 UT   05 52 06.5   -15 59 13    13.908   14.665  138.9    2.5   339   28.9 
2025-12-08 00:00 UT   05 51 46.0   -15 59 23    13.911   14.671  139.2    2.5   341   28.9 
2025-12-09 00:00 UT   05 51 25.4   -15 59 30    13.913   14.676  139.4    2.5   343   28.9 
2025-12-10 00:00 UT   05 51 04.8   -15 59 35    13.916   14.681  139.7    2.5   344   28.9 
2025-12-11 00:00 UT   05 50 44.2   -15 59 36    13.920   14.687  139.9    2.5   346   28.9 
2025-12-12 00:00 UT   05 50 23.4   -15 59 34    13.923   14.692  140.1    2.5   348   28.9 
2025-12-13 00:00 UT   05 50 02.7   -15 59 30    13.927   14.698  140.2    2.5   349   28.9 
2025-12-14 00:00 UT   05 49 41.9   -15 59 22    13.931   14.703  140.3    2.4   351   28.9 

    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.