Comet C/2022 S4 (Lemmon)
Comet C/2022 S4 (Lemmon) is in the constellation of
Centaurus,
at a distance of
Finder Charts
View interactive star map
High 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.
Celestial Coordinates
Apparent
J2000
Additional Information
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 S4 (Lemmon) from Greenwich, UK (all times relative to the local timezone Europe/London):
Today Comet C/2022 S4 (Lemmon) is not visible from Greenwich, UK
- C/2022 S4 (Lemmon) is below the horizon from Greenwich, UK.
- Given its current magnitude, C/2022 S4 (Lemmon) 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 S4 (Lemmon) from Earth is currently
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
Between 1 January 2000 and 31 December 2099, the closest approach of Comet C/2022 S4 (Lemmon) to Earth happens on Sun Jul 28 2024 at a distance of 2.751159 Astronomical Units, or 411,567,500 kilometers:
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 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.
Orbital Elements
The following table lists the orbital elements of Comet C/2022 S4 (Lemmon) at epoch 23 August 2023 00:00 UTC (JD: 2460180.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.99966438 |
| Orbit inclination | i | 101.21442547° |
| Perihelion distance | q | 2.76393668 AU 413,479,042 km |
| Aphelion distance | Q |
16,467.87151015 AU 2,463,558,517,820 km |
| Semi-major axis | a |
8,235.31772341 AU 1,231,985,998,431 km |
| Orbital period | period |
747,358.0917 years 272,972,542.9896 days |
| Date of perihelion transit | Tp | 2024-Jul-18 07:11:39 2,460,509.7998 JD |
| Next perihelion transit | 2177-Jul-12 14:56 275,433,052.7893 JD |
|
| Argument of perihelion | peri | 268.4434320468° |
| Longitude of the ascending node | node | 220.17257787° |
| Mean anomaly | M | 359.99956571487° |
| Mean motion | n | 0.00000132°/day |
Orbit Visualization
View Comet C/2022 S4 (Lemmon) in the 3D Solar System Simulator
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. Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2025 May 08 | 13h 59m 49s | -44° 38’ 05” | 17.34 | Centaurus |
| 2025 May 09 | 13h 58m 29s | -44° 18’ 31” | 17.35 | Centaurus |
| 2025 May 10 | 13h 57m 10s | -43° 58’ 52” | 17.36 | Centaurus |
| 2025 May 11 | 13h 55m 54s | -43° 39’ 07” | 17.37 | Centaurus |
| 2025 May 12 | 13h 54m 39s | -43° 19’ 17” | 17.38 | Centaurus |
| 2025 May 13 | 13h 53m 25s | -42° 59’ 22” | 17.39 | Centaurus |
| 2025 May 14 | 13h 52m 14s | -42° 39’ 25” | 17.40 | Centaurus |
| 2025 May 15 | 13h 51m 04s | -42° 19’ 24” | 17.41 | Centaurus |
| 2025 May 16 | 13h 49m 56s | -41° 59’ 21” | 17.42 | Centaurus |
| 2025 May 17 | 13h 48m 50s | -41° 39’ 16” | 17.44 | Centaurus |
| 2025 May 18 | 13h 47m 46s | -41° 19’ 10” | 17.45 | Centaurus |
| 2025 May 19 | 13h 46m 43s | -40° 59’ 05” | 17.46 | Centaurus |
| 2025 May 20 | 13h 45m 42s | -40° 38’ 59” | 17.47 | Centaurus |
| 2025 May 21 | 13h 44m 43s | -40° 18’ 55” | 17.48 | Centaurus |
Additional Resources on TheSkyLive
- Comet C/2022 S4 (Lemmon): Complete reference information on TheSkyLive.com
- Where is Comet C/2022 S4 (Lemmon)?: Key information on locating Comet C/2022 S4 (Lemmon) in the sky.
- Distance from Earth: Find out how far Comet C/2022 S4 (Lemmon) is from Earth right now.
- How Bright is Comet C/2022 S4 (Lemmon)?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Comet C/2022 S4 (Lemmon)'s rise and set times from your location.
- Interactive Sky Map: planetarium-style interactive visualization of Comet C/2022 S4 (Lemmon)'s position in the sky.
- Live Position Tracker: high precision position tracker with deep space imagery.
- Ephemeris: 15 days Comet C/2022 S4 (Lemmon)'s computed ephemeris.
- Orbital elements: information about Comet C/2022 S4 (Lemmon) orbital parameters.
- Orbit Visualization. 3d interactive visualization showing the orbit of Comet C/2022 S4 (Lemmon) with respect to the major Solar System objects.