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🌎 Location: Greenwich, United Kingdom [change]

Comet C/2019 Y1 (ATLAS)

Comet C/2019 Y1 (ATLAS) is currently in the constellation of Libra. The current Right Ascension of Comet C/2019 Y1 (ATLAS) is 14h 46m 29s and the Declination is -22° 14’ 07” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2019 Y1 (ATLAS) is 29.06 (JPL).

Summary of key facts about Comet C/2019 Y1 (ATLAS) [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

14h 46m 29s
-22° 14’ 07”
  • C/2019 Y1 (ATLAS) is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South direction at an altitude of 16° above the horizon.
  • Given its current magnitude, C/2019 Y1 (ATLAS) is visible only through long exposure photography.
  • See also C/2019 Y1 (ATLAS) rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Comet C/2019 Y1 (ATLAS) available on TheSkyLive:

Available Resources

Comet C/2019 Y1 (ATLAS) Position and Finder Charts

Below we provide Comet C/2019 Y1 (ATLAS) finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet C/2019 Y1 (ATLAS) in Libra on January, 28 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2019 Y1 (ATLAS) in Libra on January, 28 2021
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2019 Y1 (ATLAS) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2019 Y1 (ATLAS)
RA: 14h 46m 29s
Dec: -22° 14’ 07”
Deep sky finder chart for Comet C/2019 Y1 (ATLAS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2019 Y1 (ATLAS)?, a page that provides all the information needed to find Comet C/2019 Y1 (ATLAS) in the sky and additional links to sky charts.

Comet C/2019 Y1 (ATLAS) Distance from Earth

The distance of Comet C/2019 Y1 (ATLAS) from Earth is currently 666,623,813 kilometers, equivalent to 4.456105 Astronomical Units. Light takes 37 minutes and 3.6177 seconds to travel from Comet C/2019 Y1 (ATLAS) and arrive to us.

37 minutes and 3.6177 seconds

The following chart shows the distance of Comet C/2019 Y1 (ATLAS) from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Comet C/2019 Y1 (ATLAS) from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of C/2019 Y1 (ATLAS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2019 Y1 (ATLAS) to Earth

Between January 2013 and December 2100, the closest approach of Comet C/2019 Y1 (ATLAS) to Earth happens on Sun May 3 2020 at a distance of 1.105750 Astronomical Units, or 165,417,773 kilometers:

Sun May 3 2020

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Comet C/2019 Y1 (ATLAS) brightness

The current visual magnitude of Comet C/2019 Y1 (ATLAS) is 29.06.


The observed magnitude and coma diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behavior of comets. When available, please refer to the Observed Magnitude value and consider the Estimated Magnitude as a directional indication. We acknowledge with thanks the comet observations from the COBS Comet Observation Database contributed by observers worldwide and used in this table to report recent comet observations.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2019 Y1 (ATLAS), according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Predicted magnitude of Comet C/2019 Y1 (ATLAS) between January 2013 and December 2100

Comet C/2019 Y1 (ATLAS) rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Comet C/2019 Y1 (ATLAS) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.2°
Max altitude: 16.3°
Azimuth: 247.8°

The rise and set times are defined as the time at which the upper limb of Comet C/2019 Y1 (ATLAS) touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet C/2019 Y1 (ATLAS) Orbital Elements

The following table lists the orbital elements of Comet C/2019 Y1 (ATLAS) at epoch 12 April 2020 00:00 UTC (JD: 2458952.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99650954
Orbit inclination i 73.34814493°
Perihelion distance q 0.83782418 AU
125,336,714 km
Aphelion distance Q 479.22707617 AU
71,691,350,321 km
Semi-major axis a 240.03245018 AU
35,908,343,518 km
Orbital period period 3,718.8900 years
1,358,323.9690 days
Date of perihelion transit Tp 2020-Mar-15 13:31:46
2,458,924.0637 JD
Next perihelion transit 5739-Mar-03 12:47
3,817,248.0327 JD
Argument of perihelion peri 57.498231524755°
Longitude of the ascending node node 31.366316914084°
Mean anomaly M 0.0075365361372319°
Mean motion n 0.00026503°/day

Visualization of Comet C/2019 Y1 (ATLAS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2019 Y1 (ATLAS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2019 Y1 (ATLAS) and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Comet C/2019 Y1 (ATLAS)
View Comet C/2019 Y1 (ATLAS) in the 3D Solar System Simulator

Comet C/2019 Y1 (ATLAS) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2019 Y1 (ATLAS) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2019 Y1 (ATLAS) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 21 14h 46m 14s -21° 34’ 50” 28.91 Libra
2021 Jan 22 14h 46m 18s -21° 40’ 23” 28.93 Libra
2021 Jan 23 14h 46m 23s -21° 45’ 52” 28.95 Libra
2021 Jan 24 14h 46m 26s -21° 51’ 20” 28.97 Libra
2021 Jan 25 14h 46m 28s -21° 56’ 45” 28.99 Libra
2021 Jan 26 14h 46m 30s -22° 02’ 08” 29.01 Libra
2021 Jan 27 14h 46m 30s -22° 07’ 27” 29.03 Libra
2021 Jan 28 14h 46m 30s -22° 12’ 42” 29.05 Libra
2021 Jan 29 14h 46m 28s -22° 17’ 56” 29.07 Libra
2021 Jan 30 14h 46m 26s -22° 23’ 07” 29.08 Libra
2021 Jan 31 14h 46m 23s -22° 28’ 14” 29.10 Libra
2021 Feb 01 14h 46m 18s -22° 33’ 17” 29.12 Libra
2021 Feb 02 14h 46m 13s -22° 38’ 18” 29.14 Libra
2021 Feb 03 14h 46m 06s -22° 43’ 15” 29.16 Libra