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Comets » 

Comet C/2022 A3 (Lemmon-ATLAS)

Below the horizon.  Never rises today
Alt: -13.76°   Az: 193.06°   Direction: South-South-West

Comet C/2022 A3 (Lemmon-ATLAS) is in the constellation of Phoenix, at a distance of 917,260,292.0 kilometers from Earth. The current Right Ascension is 00h 13m 18s and the Declination is -50° 50’ 19” (apparent coordinates). The predicted magnitude of Comet C/2022 A3 (Lemmon-ATLAS) is 20.00 (data provided by JPL Horizons).

Finder Charts

Map showing Comet C/2022 A3 (Lemmon-ATLAS) in Phoenix on June, 13 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet C/2022 A3 (Lemmon-ATLAS) in Phoenix on June, 13 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2022 A3 (Lemmon-ATLAS) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2022 A3 (Lemmon-ATLAS)
RA: 00h 12m 02s
Dec: -50° 58’ 48”
Deep sky finder chart for Comet C/2022 A3 (Lemmon-ATLAS). Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Comet C/2022 A3 (Lemmon-ATLAS)?, a page that provides all the information needed to find Comet C/2022 A3 (Lemmon-ATLAS) in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

00h 13m 18s
-50° 50’ 19”
01h 21m 21s
01h 34m 40s

J2000

00h 12m 02s
-50° 58’ 48”

Additional Information

Phoenix
n/a
n/a
n/a
n/a
20.00

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.

Rise and Set Times

Today's rise, transit and set times of Comet C/2022 A3 (Lemmon-ATLAS) from Greenwich, UK (all times relative to the local timezone Europe/London):

Today Comet C/2022 A3 (Lemmon-ATLAS) is not visible from Greenwich, UK

  • C/2022 A3 (Lemmon-ATLAS) is below the horizon from Greenwich, UK.
  • Given its current magnitude, C/2022 A3 (Lemmon-ATLAS) is visible only through long exposure photography.
  • 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.

Distance from Earth

The distance of Comet C/2022 A3 (Lemmon-ATLAS) from Earth is currently 917,260,292.0 kilometers, equivalent to 6.1315063357 Astronomical Units. Light takes 50m 59.651s to travel from Comet C/2022 A3 (Lemmon-ATLAS) and arrive to us.

917,260,292.0
6.1315063357
50m 59.651s

The following chart shows the distance of Comet C/2022 A3 (Lemmon-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.

Chart of the distance of Comet C/2022 A3 (Lemmon-ATLAS) from Earth in Astronomical Units (au)

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/2022 A3 (Lemmon-ATLAS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach

Between 1 January 2000 and 31 December 2099, the closest approach of Comet C/2022 A3 (Lemmon-ATLAS) to Earth happens on Fri Feb 24 2023 at a distance of 3.242341 Astronomical Units, or 485,047,239 kilometers:

Fri Feb 24 2023
485,047,239
3.242341

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

Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2022 A3 (Lemmon-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.

Chart of the magnitude of Comet C/2022 A3 (Lemmon-ATLAS) as a function of time

Orbital Elements

The following table lists the orbital elements of Comet C/2022 A3 (Lemmon-ATLAS) at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99596960
Orbit inclination i 88.34808727°
Perihelion distance q 3.70346222 AU
554,030,063 km
Aphelion distance Q 1,834.06001275 AU
274,371,473,194 km
Semi-major axis a 918.88173748 AU
137,462,751,628 km
Orbital period period 27,854.6453 years
10,173,909.1939 days
Date of perihelion transit Tp 2023-Sep-28 20:10:26
2,460,216.3406 JD
Next perihelion transit 29878-Dec-17 00:49
12,634,125.5345 JD
Argument of perihelion peri 234.84631264757°
Longitude of the ascending node node 325.48320273044°
Mean anomaly M 359.99236256103°
Mean motion n 0.00003538°/day
2h1>Orbit Visualization
Orbit Diagram of Comet C/2022 A3 (Lemmon-ATLAS)
View Comet C/2022 A3 (Lemmon-ATLAS) in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Comet C/2022 A3 (Lemmon-ATLAS) computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2025 Jun 06 00h 14m 02s -50° 22’ 32” 19.98 Phoenix
2025 Jun 07 00h 13m 59s -50° 26’ 05” 19.99 Phoenix
2025 Jun 08 00h 13m 55s -50° 29’ 42” 19.99 Phoenix
2025 Jun 09 00h 13m 50s -50° 33’ 24” 19.99 Phoenix
2025 Jun 10 00h 13m 44s -50° 37’ 11” 19.99 Phoenix
2025 Jun 11 00h 13m 38s -50° 41’ 02” 19.99 Phoenix
2025 Jun 12 00h 13m 30s -50° 44’ 58” 20.00 Phoenix
2025 Jun 13 00h 13m 21s -50° 48’ 57” 20.00 Phoenix
2025 Jun 14 00h 13m 12s -50° 53’ 01” 20.00 Phoenix
2025 Jun 15 00h 13m 01s -50° 57’ 10” 20.00 Phoenix
2025 Jun 16 00h 12m 50s -51° 01’ 22” 20.00 Phoenix
2025 Jun 17 00h 12m 38s -51° 05’ 37” 20.01 Phoenix
2025 Jun 18 00h 12m 25s -51° 09’ 57” 20.01 Phoenix
2025 Jun 19 00h 12m 10s -51° 14’ 19” 20.01 Phoenix

Additional Resources on TheSkyLive