C/2019 K7 (Smith)
ephemeris date magn radius delta ra dec elong phase PA
Perihelion17 Jun 202015.74.475 AU3.793 AU20h21m+13°21'126.7°10.5°227°
Nearest approach16 Jul 202015.64.481 AU3.650 AU19h43m+18°07'140.5°8.3°180°
Today13 Mar 202520.612.863 AU12.275 AU10h57m+57°51'124.4°3.7°169°
C/2019 K7 (Smith)- 2025-03-13
astro.vanbuitenen.nl


 
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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 C/2019 K7 (Smith) are:

            e (Eccentricity)                : 1.0004970
            q (Perihelion distance)         : 4.4750690
            i (Inclination)                 : 103.48260
            Ω (Longitude of ascending node) : 308.03100
            ω (Argument of perihelion)      : 27.36950
            L (Longitude of perihelion)     : 301.14891
            B (Latitude of perihelion)      : 26.55505
            T (Time of perihelion passage)  : 2459017.77370

            Epoch                           : 2025 Mar 13
            Reference                       : MPEC 2024-GJ3

            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 gray curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (6.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 9.34 + 5 log[∆] + 5.25 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
2025-03-13 00:00 UT   10 58 04.8   +57 51 15    12.265   12.858  124.8    3.6   170   20.6 
2025-03-13 20:34 UT   10 57 30.9   +57 51 02    12.275   12.863  124.4    3.7   169   20.6 
2025-03-14 00:00 UT   10 57 25.2   +57 50 60    12.277   12.863  124.3    3.7   168   20.6 
2025-03-15 00:00 UT   10 56 45.9   +57 50 40    12.289   12.869  123.8    3.7   167   20.6 
2025-03-16 00:00 UT   10 56 06.7   +57 50 16    12.301   12.874  123.3    3.7   166   20.6 
2025-03-17 00:00 UT   10 55 27.8   +57 49 47    12.314   12.880  122.7    3.7   165   20.6 
2025-03-18 00:00 UT   10 54 49.1   +57 49 13    12.327   12.885  122.2    3.7   164   20.6 
2025-03-19 00:00 UT   10 54 10.6   +57 48 34    12.340   12.891  121.7    3.8   162   20.6 
2025-03-20 00:00 UT   10 53 32.5   +57 47 51    12.353   12.896  121.1    3.8   161   20.6 
2025-03-21 00:00 UT   10 52 54.6   +57 47 03    12.367   12.902  120.5    3.8   160   20.6 
2025-03-22 00:00 UT   10 52 16.9   +57 46 11    12.380   12.907  120.0    3.8   159   20.6 
2025-03-23 00:00 UT   10 51 39.6   +57 45 13    12.394   12.913  119.4    3.9   158   20.6 

































































    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.