C/2019 C1 (ATLAS) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Nearest approach | 16 Mar 2020 | 17.6 | 6.579 AU | 5.691 AU | 10h46m | -23°26' | 151.1° | 4.2° | 33° |
Perihelion | 4 May 2020 | 17.7 | 6.571 AU | 5.982 AU | 10h41m | -18°53' | 121.9° | 7.5° | 97° |
Today | 20 Apr 2024 | 21.2 | 11.219 AU | 10.478 AU | 16h44m | +01°27' | 135.6° | 3.6° | 252° |
C/2019 C1 (ATLAS)- 2024-04-20
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 C1 (ATLAS) are:
e (Eccentricity) : 0.9898950
q (Perihelion distance) : 6.5713110
i (Inclination) : 36.05030
Ω (Longitude of ascending node) : 212.39070
ω (Argument of perihelion) : 319.02290
L (Longitude of perihelion) : 177.31218
B (Latitude of perihelion) : -22.70025
T (Time of perihelion passage) : 2458973.58030
P (Orbital period in years) : 16583.40
Epoch : 2024 Apr 19
Reference : MPEC 2021-P47
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 (10.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 5.61 + 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
2024-04-20 00:00 UT 16 44 57.5 +01 26 02 10.481 11.216 135.1 3.6 252 21.2
2024-04-20 14:58 UT 16 44 51.4 +01 27 40 10.478 11.219 135.6 3.6 252 21.2
2024-04-21 00:00 UT 16 44 47.7 +01 28 39 10.476 11.221 135.9 3.6 251 21.2
2024-04-22 00:00 UT 16 44 37.6 +01 31 15 10.472 11.225 136.8 3.5 250 21.2
2024-04-23 00:00 UT 16 44 27.3 +01 33 50 10.467 11.230 137.6 3.5 249 21.2
2024-04-24 00:00 UT 16 44 16.7 +01 36 23 10.463 11.234 138.4 3.4 249 21.2
2024-04-25 00:00 UT 16 44 05.8 +01 38 55 10.458 11.239 139.2 3.4 248 21.2
2024-04-26 00:00 UT 16 43 54.8 +01 41 26 10.454 11.244 140.0 3.3 247 21.2
2024-04-27 00:00 UT 16 43 43.4 +01 43 55 10.451 11.248 140.7 3.2 246 21.2
2024-04-28 00:00 UT 16 43 31.9 +01 46 23 10.447 11.253 141.5 3.2 244 21.2
2024-04-29 00:00 UT 16 43 20.1 +01 48 50 10.444 11.258 142.3 3.1 243 21.2
2024-04-30 00:00 UT 16 43 08.1 +01 51 15 10.441 11.262 143.0 3.1 242 21.2
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.