|
C/2019 K7 (Smith) |
| ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
| Perihelion | 16 Jun 2020 | 15.6 | 4.473 AU | 3.795 AU | 20h22m | +13°18' | 126.4° | 10.5° | 227° |
| Nearest approach | 16 Jul 2020 | 15.6 | 4.479 AU | 3.648 AU | 19h43m | +18°09' | 140.5° | 8.3° | 180° |
| Today | 25 Oct 2025 | 21.1 | 14.084 AU | 14.350 AU | 11h01m | +49°13' | 72.5° | 3.9° | 314° |
C/2019 K7 (Smith)- 2025-10-25
astro.vanbuitenen.nl
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 9.4 + 5 log[∆] + 5.2 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 K7 (Smith) are:
e (Eccentricity) : 1.0000970
q (Perihelion distance) : 4.4728700
i (Inclination) : 103.46860
Ω (Longitude of ascending node) : 308.04450
ω (Argument of perihelion) : 27.33650
L (Longitude of perihelion) : 301.17896
B (Latitude of perihelion) : 26.52486
T (Time of perihelion passage) : 2459017.37640
Epoch : 2025 Oct 24
Reference : MPEC 2024-GJ3
Classification(s): : Nearly isotropic; New (a > 10000 AU)
Ephemerides
Date Time RA (2000) DEC (2000) delta radius elong phase PA magn
2025-10-24 00:00 UT 11 01 39.3 +49 12 14 14.359 14.077 71.6 3.8 315 21.1
2025-10-25 00:00 UT 11 01 50.5 +49 13 02 14.352 14.083 72.3 3.9 315 21.1
2025-10-25 05:44 UT 11 01 53.2 +49 13 14 14.350 14.084 72.5 3.9 314 21.1
2025-10-26 00:00 UT 11 02 01.5 +49 13 54 14.345 14.088 73.1 3.9 314 21.1
2025-10-27 00:00 UT 11 02 12.2 +49 14 48 14.337 14.093 73.8 3.9 313 21.1
2025-10-28 00:00 UT 11 02 22.6 +49 15 45 14.330 14.099 74.6 3.9 313 21.1
2025-10-29 00:00 UT 11 02 32.7 +49 16 45 14.323 14.104 75.3 3.9 312 21.1
2025-10-30 00:00 UT 11 02 42.4 +49 17 47 14.315 14.109 76.1 3.9 311 21.1
2025-10-31 00:00 UT 11 02 51.9 +49 18 53 14.308 14.115 76.8 3.9 311 21.1
2025-11-01 00:00 UT 11 03 01.1 +49 20 01 14.300 14.120 77.6 3.9 310 21.1
2025-11-02 00:00 UT 11 03 10.0 +49 21 12 14.292 14.125 78.3 3.9 310 21.1
2025-11-03 00:00 UT 11 03 18.5 +49 22 26 14.285 14.131 79.1 4.0 309 21.1
2025-11-04 00:00 UT 11 03 26.7 +49 23 42 14.277 14.136 79.8 4.0 308 21.1
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.
