Comet C/2022 S4 (Lemmon)

Comet C/2022 S4 (Lemmon) is currently in the constellation of Eridanus. The current Right Ascension of Comet C/2022 S4 (Lemmon) is 03h 18m 29s and the Declination is -09° 10’ 18” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom edit_location_alt). The current estimated magnitude of Comet C/2022 S4 (Lemmon) is 16.52 (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/2022 S4 (Lemmon) 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/2022 S4 (Lemmon)?)
• Distance from Earth (see also How far is Comet C/2022 S4 (Lemmon) from Earth?)
• When does Comet C/2022 S4 (Lemmon) rise and set?
• Brightness (see also How bright is Comet C/2022 S4 (Lemmon)?)
• Orbital elements. Detailed information about Comet C/2022 S4 (Lemmon) orbital parameters.
• Interactive orbit visualization. 3d visualization showing the orbit of Comet C/2022 S4 (Lemmon) with respect to the major Solar System objects.
• 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet C/2022 S4 (Lemmon) for the past and next 7 days.
• Interactive sky chart. An online planetarium application that shows where to locate Comet C/2022 S4 (Lemmon) 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/2022 S4 (Lemmon) with your telescope or on your astrophotographies.

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2022 S4 (Lemmon) is right now. Click on the image to see a more detailed fullscreen tracker view.

Also check out Where is Comet C/2022 S4 (Lemmon)?, a page that provides all the information needed to find Comet C/2022 S4 (Lemmon) in the sky and additional links to sky charts.

Comet C/2022 S4 (Lemmon) Distance from Earth

The distance of Comet C/2022 S4 (Lemmon) from Earth is currently 475,862,897 kilometers, equivalent to 3.180947 Astronomical Units. Light takes 26 minutes and 27.3078 seconds to travel from Comet C/2022 S4 (Lemmon) and arrive to us.

The following chart shows the distance of Comet C/2022 S4 (Lemmon) 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/2022 S4 (Lemmon) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach of Comet C/2022 S4 (Lemmon) to Earth

Between 1 January 2013 and 30 December 2100, the closest approach of Comet C/2022 S4 (Lemmon) to Earth happens on Sun Jul 28 2024 at a distance of 2.750979 Astronomical Units, or 411,540,584 kilometers:

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

Comet C/2022 S4 (Lemmon) Brightness and Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2022 S4 (Lemmon), 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/2022 S4 (Lemmon) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2022 S4 (Lemmon) with respect of the Sun and the orbits of the major planets. The position of Comet C/2022 S4 (Lemmon) 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/2022 S4 (Lemmon) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2022 S4 (Lemmon) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2022 S4 (Lemmon) in our Online Planetarium at the chosen date.

Date	Right AscensionR.A.	DeclinationDec.	MagnitudeMag	Constellation
2023 Sep 27	03h 23m 30s	-06° 43’ 09”	16.66	Eridanus
2023 Sep 28	03h 22m 54s	-07° 02’ 11”	16.64	Eridanus
2023 Sep 29	03h 22m 18s	-07° 21’ 21”	16.62	Eridanus
2023 Sep 30	03h 21m 39s	-07° 40’ 41”	16.60	Eridanus
2023 Oct 01	03h 21m 00s	-08° 00’ 08”	16.58	Eridanus
2023 Oct 02	03h 20m 20s	-08° 19’ 45”	16.56	Eridanus
2023 Oct 03	03h 19m 37s	-08° 39’ 29”	16.54	Eridanus
2023 Oct 04	03h 18m 53s	-08° 59’ 21”	16.53	Eridanus
2023 Oct 05	03h 18m 10s	-09° 19’ 19”	16.51	Eridanus
2023 Oct 06	03h 17m 24s	-09° 39’ 24”	16.49	Eridanus
2023 Oct 07	03h 16m 36s	-09° 59’ 35”	16.47	Eridanus
2023 Oct 08	03h 15m 47s	-10° 19’ 53”	16.45	Eridanus
2023 Oct 09	03h 14m 58s	-10° 40’ 14”	16.44	Eridanus
2023 Oct 10	03h 14m 08s	-11° 00’ 41”	16.42	Eridanus