C/2019 N1 (ATLAS) |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
PA |
Perihelion | 30 Nov 2020 | 12.8 | 1.703 AU | 2.415 AU | 13h56m | -21°46' | 34.9° | 19.4° | 277° |
Nearest approach | 7 Feb 2021 | 12.7 | 1.925 AU | 1.921 AU | 15h24m | -73°44' | 75.4° | 29.7° | 274° |
Today | 19 Jul 2025 | 22.6 | 14.088 AU | 13.864 AU | 01h36m | -19°37' | 100.7° | 4.1° | 251° |
C/2019 N1 (ATLAS)- 2025-07-19
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 N1 (ATLAS) are:
e (Eccentricity) : 0.9982360
q (Perihelion distance) : 1.7030550
i (Inclination) : 82.53450
Ω (Longitude of ascending node) : 13.51100
ω (Argument of perihelion) : 193.34340
L (Longitude of perihelion) : 15.27618
B (Latitude of perihelion) : -13.22823
T (Time of perihelion passage) : 2459184.00590
P (Orbital period in years) : 29998.20
Epoch : 2025 Jul 17
Reference : MPEC 2023-C45
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 (7.50 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 9.37 + 5 log[∆] + 6.55 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
2025-07-19 00:00 UT 01 36 05.1 -19 37 43 13.864 14.088 100.6 4.1 251 22.6
2025-07-19 01:28 UT 01 36 05.0 -19 37 49 13.864 14.088 100.7 4.1 251 22.6
2025-07-20 00:00 UT 01 36 03.6 -19 39 19 13.856 14.094 101.5 4.1 252 22.6
2025-07-21 00:00 UT 01 36 01.9 -19 40 57 13.847 14.100 102.4 4.0 252 22.6
2025-07-22 00:00 UT 01 35 59.8 -19 42 36 13.839 14.106 103.2 4.0 253 22.6
2025-07-23 00:00 UT 01 35 57.5 -19 44 16 13.830 14.112 104.1 4.0 253 22.6
2025-07-24 00:00 UT 01 35 54.9 -19 45 58 13.822 14.118 104.9 4.0 254 22.6
2025-07-25 00:00 UT 01 35 52.0 -19 47 40 13.814 14.124 105.8 4.0 254 22.6
2025-07-26 00:00 UT 01 35 48.9 -19 49 25 13.805 14.130 106.6 3.9 255 22.6
2025-07-27 00:00 UT 01 35 45.4 -19 51 10 13.797 14.137 107.5 3.9 255 22.6
2025-07-28 00:00 UT 01 35 41.7 -19 52 57 13.789 14.143 108.4 3.9 256 22.6
2025-07-29 00:00 UT 01 35 37.6 -19 54 44 13.781 14.149 109.2 3.9 256 22.6
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.