C/2017 E4 (Lovejoy) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Nearest approach | 30 Mar 2017 | 9.3 | 0.743 AU | 0.601 AU | 21h24m | +05°50' | 47.8° | 95.4° | 270° |
Perihelion | 23 Apr 2017 | 8.8 | 0.492 AU | 1.100 AU | 01h14m | +36°41' | 26.6° | 66.0° | 332° |
Today | 6 Nov 2024 | 31.6 | 21.276 AU | 20.945 AU | 04h43m | -51°03' | 108.2° | 2.5° | 331° |
C/2017 E4 (Lovejoy)- 2024-11-06
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/2017 E4 (Lovejoy) are:
e (Eccentricity) : 1.0014810
q (Perihelion distance) : 0.4922180
i (Inclination) : 87.96240
Ω (Longitude of ascending node) : 222.76090
ω (Argument of perihelion) : 87.09480
L (Longitude of perihelion) : 257.77653
B (Latitude of perihelion) : 86.45198
T (Time of perihelion passage) : 2457866.76760
Epoch : 2022 May 26
Reference : MPC105239
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 (17.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 11.72 + 5 log[∆] + 10.00 log[r]). The additional green curve shows the effect of forward scattering, occurring when the comet is between the earth and the sun, for a gas-to-dust light ratio δ90 of 0.30. (See Marcus 2007)
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.