C/2019 Y4 (ATLAS) - DISINTEGRATED |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Disintegration | 1 Apr 2020 | 8.1 | 1.462 AU | 1.027 AU | 07h58m | +69°17' | 92.4° | 43.1° | 109° |
Nearest approach | 22 May 2020 | - | 0.367 AU | 0.777 AU | 03h43m | +38°29' | 18.3° | 120.2° | 350° |
Perihelion | 30 May 2020 | - | 0.256 AU | 0.870 AU | 03h35m | +19°50' | 13.0° | 117.4° | 259° |
Today | 9 May 2024 | - | 13.722 AU | 14.262 AU | 06h56m | +10°30' | 55.9° | 3.5° | 104° |
C/2019 Y4 (ATLAS)- 2024-05-09
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 Y4 (ATLAS) are:
e (Eccentricity) : 0.9992700
q (Perihelion distance) : 0.2564020
i (Inclination) : 45.07840
Ω (Longitude of ascending node) : 120.72720
ω (Argument of perihelion) : 177.44070
L (Longitude of perihelion) : 118.91938
B (Latitude of perihelion) : 1.81187
T (Time of perihelion passage) : 2458999.98850
P (Orbital period in years) : 6582.61
Epoch : 2024 May 08
Reference : MPEC 2024-A43
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 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 (11.80 + 5 log[∆] + 15.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 6.43 + 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 0.50. (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.
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
2024-05-09 00:00 UT 06 56 13.7 +10 30 36 14.249 13.718 56.5 3.5 104 23.6
2024-05-09 15:51 UT 06 56 20.7 +10 30 60 14.262 13.722 55.9 3.5 104 23.6
2024-05-10 00:00 UT 06 56 24.3 +10 31 12 14.269 13.725 55.6 3.5 104 23.6
2024-05-11 00:00 UT 06 56 35.2 +10 31 46 14.289 13.731 54.7 3.4 105 23.6
2024-05-12 00:00 UT 06 56 46.3 +10 32 20 14.309 13.738 53.8 3.4 105 23.6
2024-05-13 00:00 UT 06 56 57.6 +10 32 53 14.329 13.744 52.9 3.4 105 23.6
2024-05-14 00:00 UT 06 57 09.0 +10 33 25 14.348 13.750 52.0 3.3 105 23.6
2024-05-15 00:00 UT 06 57 20.7 +10 33 56 14.368 13.757 51.2 3.3 106 23.6
2024-05-16 00:00 UT 06 57 32.5 +10 34 26 14.387 13.763 50.3 3.2 106 23.6
2024-05-17 00:00 UT 06 57 44.5 +10 34 55 14.406 13.770 49.4 3.2 106 23.6
2024-05-18 00:00 UT 06 57 56.6 +10 35 23 14.425 13.776 48.5 3.2 107 23.6
2024-05-19 00:00 UT 06 58 09.0 +10 35 50 14.443 13.783 47.6 3.1 107 23.6
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.