Comet C/2021 Y1 (ATLAS)

Comet C/2021 Y1 (ATLAS) is currently in the constellation of Columba. The current Right Ascension of Comet C/2021 Y1 (ATLAS) is 06h 00m 53s and the Declination is -31° 22’ 18” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom edit_location_alt). The current estimated magnitude of Comet C/2021 Y1 (ATLAS) is 15.38 (JPL).

The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.

Today's rise, transit and set times of Comet C/2021 Y1 (ATLAS) from Greenwich, United Kingdom edit_location_alt (all times relative to the local timezone Europe/London):

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Available Resources

• Position and finder charts (see also Where is Comet C/2021 Y1 (ATLAS)?)
• Distance from Earth (see also How far is Comet C/2021 Y1 (ATLAS) from Earth?)
• When does Comet C/2021 Y1 (ATLAS) rise and set?
• Brightness (see also How bright is Comet C/2021 Y1 (ATLAS)?)
• Orbital elements. Detailed information about Comet C/2021 Y1 (ATLAS) orbital parameters.
• Interactive orbit visualization. 3d visualization showing the orbit of Comet C/2021 Y1 (ATLAS) with respect to the major Solar System objects.
• 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet C/2021 Y1 (ATLAS) for the past and next 7 days.
• Interactive sky chart. An online planetarium application that shows where to locate Comet C/2021 Y1 (ATLAS) in the sky from your location.
• Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet C/2021 Y1 (ATLAS) with your telescope or on your astrophotographies.

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2021 Y1 (ATLAS) is right now. Click on the image to see a more detailed fullscreen tracker view.

Also check out Where is Comet C/2021 Y1 (ATLAS)?, a page that provides all the information needed to find Comet C/2021 Y1 (ATLAS) in the sky and additional links to sky charts.

Comet C/2021 Y1 (ATLAS) Distance from Earth

The distance of Comet C/2021 Y1 (ATLAS) from Earth is currently 367,274,737 kilometers, equivalent to 2.455080 Astronomical Units. Light takes 20 minutes and 25.0967 seconds to travel from Comet C/2021 Y1 (ATLAS) and arrive to us.

The following chart shows the distance of Comet C/2021 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.

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/2021 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/2021 Y1 (ATLAS) to Earth

Between 1 January 2013 and 30 December 2100, the closest approach of Comet C/2021 Y1 (ATLAS) to Earth happens on Tue Dec 13 2022 at a distance of 1.688418 Astronomical Units, or 252,583,802 kilometers:

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

Comet C/2021 Y1 (ATLAS) Brightness and Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2021 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.

Visualization of Comet C/2021 Y1 (ATLAS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2021 Y1 (ATLAS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2021 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!

Comet C/2021 Y1 (ATLAS) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2021 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/2021 Y1 (ATLAS) in our Online Planetarium at the chosen date.

Date	Right AscensionR.A.	DeclinationDec.	MagnitudeMag	Constellation
2023 May 28	05h 41m 17s	-29° 35’ 27”	15.37	Columba
2023 May 29	05h 43m 45s	-29° 48’ 56”	15.37	Columba
2023 May 30	05h 46m 14s	-30° 02’ 30”	15.37	Columba
2023 May 31	05h 48m 43s	-30° 16’ 13”	15.38	Columba
2023 Jun 01	05h 51m 15s	-30° 30’ 01”	15.38	Columba
2023 Jun 02	05h 53m 48s	-30° 43’ 54”	15.38	Columba
2023 Jun 03	05h 56m 24s	-30° 57’ 56”	15.38	Columba
2023 Jun 04	05h 58m 59s	-31° 12’ 02”	15.38	Columba
2023 Jun 05	06h 01m 37s	-31° 26’ 14”	15.38	Columba
2023 Jun 06	06h 04m 17s	-31° 40’ 32”	15.38	Columba
2023 Jun 07	06h 06m 57s	-31° 54’ 56”	15.38	Columba
2023 Jun 08	06h 09m 39s	-32° 09’ 24”	15.38	Columba
2023 Jun 09	06h 12m 24s	-32° 23’ 57”	15.38	Canis Majoris
2023 Jun 10	06h 15m 09s	-32° 38’ 35”	15.38	Canis Majoris