Comet 201P/LONEOS
Comet 201P/LONEOS is in the constellation of
Ophiuchus,
at a distance of
Finder Charts
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High precision deep sky finder chart, 60 arcmin wide, showing where Comet 201P/LONEOS is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet 201P/LONEOS?, a page that provides all the information needed to find Comet 201P/LONEOS 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 201P/LONEOS from Greenwich, UK (all times relative to the local timezone Europe/London):
- 201P/LONEOS is below the horizon from Greenwich, UK.
- Given its current magnitude, 201P/LONEOS 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 201P/LONEOS from Earth is currently
The following chart shows the distance of Comet 201P/LONEOS 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 201P/LONEOS 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 201P/LONEOS to Earth happens on Tue Nov 26 2097 at a distance of 0.367929 Astronomical Units, or 55,041,372 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 201P/LONEOS, 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 201P/LONEOS at epoch 07 May 2012 00:00 UTC (JD: 2456055.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.61286098 |
| Orbit inclination | i | 7.03651944° |
| Perihelion distance | q | 1.33998367 AU 200,458,704 km |
| Aphelion distance | Q |
5.58250985 AU 835,131,588 km |
| Semi-major axis | a |
3.46124676 AU 517,795,146 km |
| Orbital period | period |
6.4396 years 2,352.0539 days |
| Date of perihelion transit | Tp | 2015-Jan-14 08:01:42 2,457,036.8345 JD |
| Next perihelion transit | 2021-Jun-23 09:19 2,459,388.8884 JD |
|
| Argument of perihelion | peri | 24.953960253678° |
| Longitude of the ascending node | node | 35.285667774203° |
| Mean anomaly | M | 209.79917906889° |
| Mean motion | n | 0.15305772°/day |
View Comet 201P/LONEOS in the 3D Solar System Simulator
15 Days Ephemeris
The following table lists the ephemerides of Comet 201P/LONEOS 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 13 | 17h 27m 12s | -29° 03’ 56” | 27.02 | Ophiuchus |
| 2025 May 14 | 17h 26m 36s | -29° 04’ 24” | 27.01 | Ophiuchus |
| 2025 May 15 | 17h 25m 59s | -29° 04’ 48” | 27.00 | Ophiuchus |
| 2025 May 16 | 17h 25m 21s | -29° 05’ 11” | 27.00 | Ophiuchus |
| 2025 May 17 | 17h 24m 43s | -29° 05’ 32” | 26.99 | Ophiuchus |
| 2025 May 18 | 17h 24m 04s | -29° 05’ 50” | 26.98 | Ophiuchus |
| 2025 May 19 | 17h 23m 24s | -29° 06’ 06” | 26.97 | Ophiuchus |
| 2025 May 20 | 17h 22m 44s | -29° 06’ 19” | 26.97 | Ophiuchus |
| 2025 May 21 | 17h 22m 03s | -29° 06’ 31” | 26.96 | Ophiuchus |
| 2025 May 22 | 17h 21m 22s | -29° 06’ 39” | 26.95 | Ophiuchus |
| 2025 May 23 | 17h 20m 40s | -29° 06’ 46” | 26.95 | Ophiuchus |
| 2025 May 24 | 17h 19m 58s | -29° 06’ 49” | 26.94 | Ophiuchus |
| 2025 May 25 | 17h 19m 15s | -29° 06’ 51” | 26.93 | Ophiuchus |
| 2025 May 26 | 17h 18m 32s | -29° 06’ 49” | 26.93 | Ophiuchus |
Additional Resources on TheSkyLive
- Comet 201P/LONEOS: Complete reference information on TheSkyLive.com
- Where is Comet 201P/LONEOS?: Key information on locating Comet 201P/LONEOS in the sky.
- Distance from Earth: Find out how far Comet 201P/LONEOS is from Earth right now.
- How Bright is Comet 201P/LONEOS?: Current visual brightness (magnitude) and apparent size.
- Rise and Set Times: Comet 201P/LONEOS's rise and set times from your location.
- Interactive Sky Map: planetarium-style interactive visualization of Comet 201P/LONEOS's position in the sky.
- Live Position Tracker: high precision position tracker with deep space imagery.
- Ephemeris: 15 days Comet 201P/LONEOS's computed ephemeris.
- Orbital elements: information about Comet 201P/LONEOS orbital parameters.
- Orbit Visualization. 3d interactive visualization showing the orbit of Comet 201P/LONEOS with respect to the major Solar System objects.