C/2019 L3 (ATLAS) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Nearest approach | 6 Jan 2022 | 9.4 | 3.559 AU | 2.585 AU | 07h06m | +31°49' | 170.6° | 2.6° | 174° |
Perihelion | 10 Jan 2022 | 9.4 | 3.559 AU | 2.587 AU | 07h02m | +31°11' | 169.6° | 2.9° | 151° |
Today | 2 Jul 2025 | 16.6 | 10.499 AU | 10.242 AU | 11h54m | -54°38' | 101.9° | 5.4° | 113° |
C/2019 L3 (ATLAS)- 2025-07-02
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 L3 (ATLAS) are:
e (Eccentricity) : 1.0031560
q (Perihelion distance) : 3.5587420
i (Inclination) : 48.34590
Ω (Longitude of ascending node) : 290.71700
ω (Argument of perihelion) : 171.75140
L (Longitude of perihelion) : 285.21351
B (Latitude of perihelion) : 6.15367
T (Time of perihelion passage) : 2459589.62410
Epoch : 2025 Jun 30
Reference : MPEC 2025-MC0
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 (4.50 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 2.35 + 5 log[∆] + 9.02 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
2025-07-02 00:00 UT 11 54 53.9 -54 38 24 10.241 10.499 101.9 5.4 113 16.6
2025-07-02 01:28 UT 11 54 55.0 -54 38 12 10.242 10.499 101.9 5.4 113 16.6
2025-07-03 00:00 UT 11 55 11.2 -54 34 57 10.257 10.505 101.3 5.4 114 16.6
2025-07-04 00:00 UT 11 55 28.9 -54 31 33 10.273 10.511 100.8 5.5 115 16.6
2025-07-05 00:00 UT 11 55 47.0 -54 28 12 10.290 10.517 100.2 5.5 115 16.6
2025-07-06 00:00 UT 11 56 05.7 -54 24 53 10.306 10.523 99.6 5.5 116 16.6
2025-07-07 00:00 UT 11 56 24.8 -54 21 37 10.323 10.529 98.9 5.5 117 16.6
2025-07-08 00:00 UT 11 56 44.4 -54 18 25 10.339 10.535 98.3 5.5 117 16.6
2025-07-09 00:00 UT 11 57 04.4 -54 15 15 10.356 10.541 97.7 5.5 118 16.7
2025-07-10 00:00 UT 11 57 24.9 -54 12 08 10.373 10.548 97.1 5.5 119 16.7
2025-07-11 00:00 UT 11 57 45.9 -54 09 05 10.389 10.554 96.5 5.5 119 16.7
2025-07-12 00:00 UT 11 58 07.2 -54 06 04 10.406 10.560 95.9 5.5 120 16.7
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.