396P/Leonard |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Perihelion | 27 Aug 2019 | 21.5 | 3.969 AU | 4.970 AU | 09h56m | +13°11' | 7.2° | 1.8° | 295° |
Nearest approach | 10 Mar 2020 | 20.6 | 4.114 AU | 3.125 AU | 11h45m | +06°13' | 173.8° | 1.5° | 250° |
Today | 29 Mar 2024 | 25.6 | 7.988 AU | 8.076 AU | 19h14m | -19°07' | 81.4° | 7.1° | 263° |
396P/Leonard- 2024-03-29
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 396P/Leonard are:
e (Eccentricity) : 0.4163370
q (Perihelion distance) : 3.9694240
i (Inclination) : 5.43930
Ω (Longitude of ascending node) : 136.62670
ω (Argument of perihelion) : 8.31830
L (Longitude of perihelion) : 144.90806
B (Latitude of perihelion) : 0.78576
T (Time of perihelion passage) : 2458723.24490
P (Orbital period in years) : 17.74
Epoch : 2024 Mar 28
Reference : MPEC 2020-KB7
Classification(s): : Ecliptic; Jupiter family
Tisserand (Jupiter) : 2.835
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. (12.00 + 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
2024-03-29 00:00 UT 19 14 06.6 -19 08 17 8.082 7.987 81.0 7.1 263 25.6
2024-03-29 10:57 UT 19 14 12.8 -19 07 59 8.076 7.988 81.4 7.1 263 25.6
2024-03-30 00:00 UT 19 14 20.1 -19 07 39 8.068 7.989 81.9 7.1 263 25.6
2024-03-31 00:00 UT 19 14 33.2 -19 07 02 8.054 7.991 82.8 7.1 263 25.6
2024-04-01 00:00 UT 19 14 45.8 -19 06 25 8.039 7.993 83.8 7.1 263 25.6
2024-04-02 00:00 UT 19 14 57.9 -19 05 49 8.025 7.995 84.7 7.2 263 25.6
2024-04-03 00:00 UT 19 15 09.5 -19 05 14 8.011 7.997 85.6 7.2 263 25.5
2024-04-04 00:00 UT 19 15 20.6 -19 04 40 7.996 7.999 86.6 7.2 263 25.5
2024-04-05 00:00 UT 19 15 31.2 -19 04 07 7.982 8.002 87.5 7.2 263 25.5
2024-04-06 00:00 UT 19 15 41.4 -19 03 34 7.967 8.004 88.5 7.2 263 25.5
2024-04-07 00:00 UT 19 15 51.0 -19 03 02 7.953 8.006 89.4 7.2 263 25.5
2024-04-08 00:00 UT 19 16 00.1 -19 02 31 7.939 8.008 90.4 7.2 263 25.5
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.