Comet ATLAS (C/2019 Y4)

Comet ATLAS (C/2019 Y4) is currently in the constellation of Monoceros. The current Right Ascension of Comet ATLAS (C/2019 Y4) is 05h 57m 22s and the Declination is -05° 01’ 10” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet ATLAS (C/2019 Y4) is 19.52 (JPL).

Summary of key facts about Comet ATLAS (C/2019 Y4) [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]:

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Additional information about Comet ATLAS (C/2019 Y4) available on TheSkyLive:

Available Resources

• Position and finder charts (see also Where is Comet ATLAS (C/2019 Y4)?)
• Distance from Earth (see also How far is Comet ATLAS (C/2019 Y4) from Earth?)
• Rise and set times (see also When does Comet ATLAS (C/2019 Y4) rise and set?)
• Brightness (see also How bright is Comet ATLAS (C/2019 Y4)?)
• Orbital elements. Detailed information about Comet ATLAS (C/2019 Y4) orbital parameters.
• Interactive orbit visualization. 3d visualization showing the orbit of Comet ATLAS (C/2019 Y4) with respect to the major Solar System objects.
• 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet ATLAS (C/2019 Y4) for the past and next 7 days.
• Interactive sky chart. An online planetarium application that shows where to locate Comet ATLAS (C/2019 Y4) in the sky from your location.
• Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet ATLAS (C/2019 Y4) with your telescope or on your astrophotographies.

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet ATLAS (C/2019 Y4) is right now. Click on the image to see a more detailed fullscreen tracker view.

Also check out Where is Comet ATLAS (C/2019 Y4)?, a page that provides all the information needed to find Comet ATLAS (C/2019 Y4) in the sky and additional links to sky charts.

Comet ATLAS (C/2019 Y4) Distance from Earth

The distance of Comet ATLAS (C/2019 Y4) from Earth is currently 477,422,225 kilometers, equivalent to 3.191370 Astronomical Units. Light takes 26 minutes and 32.5091 seconds to travel from Comet ATLAS (C/2019 Y4) and arrive to us.

The following chart shows the distance of Comet ATLAS (C/2019 Y4) 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.

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 Y4 (ATLAS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet ATLAS (C/2019 Y4) to Earth

Between January 2013 and December 2100, the closest approach of Comet ATLAS (C/2019 Y4) to Earth happens on Sun May 24 2020 at a distance of 0.785983 Astronomical Units, or 117,581,331 kilometers:

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

Comet ATLAS (C/2019 Y4) brightness

The current visual magnitude of Comet ATLAS (C/2019 Y4) is 19.52.

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 ATLAS (C/2019 Y4), 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.

Comet ATLAS (C/2019 Y4) rise and set times

Today's Comet ATLAS (C/2019 Y4) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

The rise and set times are defined as the time at which the upper limb of Comet ATLAS (C/2019 Y4) 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.

Visualization of Comet ATLAS (C/2019 Y4) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet ATLAS (C/2019 Y4) with respect of the Sun and the orbits of the major planets. The position of Comet ATLAS (C/2019 Y4) 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!

Comet ATLAS (C/2019 Y4) 15 Days Ephemeris

The following table lists the ephemerides of Comet ATLAS (C/2019 Y4) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet ATLAS (C/2019 Y4) in our Online Planetarium at the chosen date.

Date	Right AscensionR.A.	DeclinationDec.	MagnitudeMag	Constellation
2021 Jan 14	06h 04m 00s	-06° 00’ 41”	19.38	Monoceros
2021 Jan 15	06h 03m 03s	-05° 53’ 05”	19.39	Monoceros
2021 Jan 16	06h 02m 08s	-05° 45’ 28”	19.41	Monoceros
2021 Jan 17	06h 01m 15s	-05° 37’ 45”	19.43	Monoceros
2021 Jan 18	06h 00m 23s	-05° 30’ 00”	19.45	Monoceros
2021 Jan 19	05h 59m 31s	-05° 22’ 10”	19.47	Monoceros
2021 Jan 20	05h 58m 41s	-05° 14’ 17”	19.49	Monoceros
2021 Jan 21	05h 57m 53s	-05° 06’ 23”	19.51	Monoceros
2021 Jan 22	05h 57m 06s	-04° 58’ 26”	19.53	Monoceros
2021 Jan 23	05h 56m 20s	-04° 50’ 26”	19.54	Monoceros
2021 Jan 24	05h 55m 36s	-04° 42’ 24”	19.56	Orion
2021 Jan 25	05h 54m 51s	-04° 34’ 22”	19.58	Orion
2021 Jan 26	05h 54m 10s	-04° 26’ 17”	19.60	Orion
2021 Jan 27	05h 53m 29s	-04° 18’ 11”	19.62	Orion