C/2019 LB7 (Kleyna) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Nearest approach | 3 Dec 2018 | 22.7 | 2.762 AU | 1.832 AU | 04h04m | -00°24' | 156.0° | 8.3° | 20° |
Perihelion | 27 Mar 2019 | 23.7 | 2.495 AU | 3.445 AU | 01h23m | +03°58' | 15.0° | 5.9° | 85° |
Today | 15 Jul 2025 | 34.9 | 15.903 AU | 15.230 AU | 16h22m | -06°32' | 130.0° | 2.8° | 113° |
C/2019 LB7 (Kleyna)- 2025-07-15
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.)
The orbital elements of C/2019 LB7 (Kleyna) are:
e (Eccentricity) : 0.9287920
q (Perihelion distance) : 2.4947960
i (Inclination) : 164.27830
Ω (Longitude of ascending node) : 4.00730
ω (Argument of perihelion) : 336.78030
L (Longitude of perihelion) : 26.44587
B (Latitude of perihelion) : -6.13262
T (Time of perihelion passage) : 2458570.13900
P (Orbital period in years) : 207.38
Epoch : 2025 Jul 14
Reference : MPC118095
Classification(s): : Nearly isotropic; Returning (a < 10000 AU); External (P > 200 years)
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. (17.00 + 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
2025-07-15 00:00 UT 16 22 34.4 -06 31 52 15.216 15.899 130.8 2.8 113 34.9
2025-07-15 20:31 UT 16 22 23.7 -06 32 07 15.230 15.903 130.0 2.8 113 34.9
2025-07-16 00:00 UT 16 22 21.8 -06 32 09 15.233 15.904 129.8 2.8 113 34.9
2025-07-17 00:00 UT 16 22 09.5 -06 32 27 15.250 15.908 128.9 2.9 112 34.9
2025-07-18 00:00 UT 16 21 57.4 -06 32 47 15.268 15.913 127.9 2.9 112 34.9
2025-07-19 00:00 UT 16 21 45.4 -06 33 07 15.285 15.918 127.0 2.9 111 34.9
2025-07-20 00:00 UT 16 21 33.7 -06 33 28 15.303 15.923 126.0 3.0 111 34.9
2025-07-21 00:00 UT 16 21 22.2 -06 33 51 15.321 15.928 125.1 3.0 111 34.9
2025-07-22 00:00 UT 16 21 11.0 -06 34 14 15.339 15.932 124.1 3.0 110 35.0
2025-07-23 00:00 UT 16 20 60.0 -06 34 38 15.358 15.937 123.2 3.1 110 35.0
2025-07-24 00:00 UT 16 20 49.2 -06 35 04 15.376 15.942 122.2 3.1 109 35.0
2025-07-25 00:00 UT 16 20 38.6 -06 35 30 15.395 15.947 121.3 3.1 109 35.0
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.