Comet C/2024 J3 (ATLAS)
Comet C/2024 J3 (ATLAS) is in the constellation of
Sagittarius,
at a distance of
View interactive star map
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/2024 J3 (ATLAS) from Greenwich, UK (all times relative to the local timezone Europe/London):
- C/2024 J3 (ATLAS) is below the horizon from Greenwich, UK.
- Given its current magnitude, C/2024 J3 (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.
Finder Charts
High precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2024 J3 (ATLAS) is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet C/2024 J3 (ATLAS)?, a page that provides all the information needed to find Comet C/2024 J3 (ATLAS) in the sky and additional links to sky charts.
Distance from Earth
The distance of Comet C/2024 J3 (ATLAS) from Earth is currently
The following chart shows the distance of Comet C/2024 J3 (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/2024 J3 (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/2024 J3 (ATLAS) to Earth happens on Sat Jul 25 2026 at a distance of 3.432381 Astronomical Units, or 513,476,906 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/2024 J3 (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.
Orbital Elements
The following table lists the orbital elements of Comet C/2024 J3 (ATLAS) at epoch 13 May 2024 00:00 UTC (JD: 2460444.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 1.00770161 |
| Orbit inclination | i | 75.63982122° |
| Perihelion distance | q | 3.85005938 AU 575,960,686 km |
| Aphelion distance | Q | n.a. |
| Semi-major axis | a | n.a. |
| Orbital period | period | n.a. |
| Date of perihelion transit | Tp | 2026-Nov-20 23:49:33 2,461,365.4928 JD |
| Argument of perihelion | peri | 74.078454356308° |
| Longitude of the ascending node | node | 285.95770390023° |
| Mean anomaly | M | -0.081214044221244° |
| Mean motion | n | 0.00008818°/day |
Orbit Visualization
View Comet C/2024 J3 (ATLAS) in the 3D Solar System Simulator
15 Days Ephemeris
The following table lists the ephemerides of Comet C/2024 J3 (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 |
|---|---|---|---|---|
| 2024 Sep 26 | 18h 23m 37s | -36° 56’ 51” | 17.87 | Corona Australis |
| 2024 Sep 27 | 18h 23m 39s | -36° 52’ 06” | 17.87 | Sagittarius |
| 2024 Sep 28 | 18h 23m 41s | -36° 47’ 21” | 17.86 | Sagittarius |
| 2024 Sep 29 | 18h 23m 43s | -36° 42’ 37” | 17.86 | Sagittarius |
| 2024 Sep 30 | 18h 23m 47s | -36° 37’ 53” | 17.86 | Sagittarius |
| 2024 Oct 01 | 18h 23m 51s | -36° 33’ 09” | 17.86 | Sagittarius |
| 2024 Oct 02 | 18h 23m 55s | -36° 28’ 26” | 17.86 | Sagittarius |
| 2024 Oct 03 | 18h 24m 01s | -36° 23’ 44” | 17.86 | Sagittarius |
| 2024 Oct 04 | 18h 24m 07s | -36° 19’ 02” | 17.86 | Sagittarius |
| 2024 Oct 05 | 18h 24m 13s | -36° 14’ 21” | 17.86 | Sagittarius |
| 2024 Oct 06 | 18h 24m 21s | -36° 09’ 40” | 17.86 | Sagittarius |
| 2024 Oct 07 | 18h 24m 29s | -36° 05’ 01” | 17.86 | Sagittarius |
| 2024 Oct 08 | 18h 24m 37s | -36° 00’ 22” | 17.86 | Sagittarius |
| 2024 Oct 09 | 18h 24m 46s | -35° 55’ 43” | 17.86 | Sagittarius |
Additional Resources
- Position and finder charts (see also Where is Comet C/2024 J3 (ATLAS)?)
- Distance from Earth (see also How far is Comet C/2024 J3 (ATLAS) from Earth?)
- When does Comet C/2024 J3 (ATLAS) rise and set?
- Brightness (see also How bright is Comet C/2024 J3 (ATLAS)?)
- Orbital elements. Detailed information about Comet C/2024 J3 (ATLAS) orbital parameters.
- Interactive orbit visualization. 3d visualization showing the orbit of Comet C/2024 J3 (ATLAS) with respect to the major Solar System objects.
- 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet C/2024 J3 (ATLAS) for the past and next 7 days.
- Interactive sky chart. An online planetarium application that shows where to locate Comet C/2024 J3 (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/2024 J3 (ATLAS) with your telescope or on your astrophotographies.