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Comet 201P/LONEOS Ephemeris Calculator
Compute the position of Comet 201P/LONEOS for any date and time between 1 January 2013 and 30 December 2100 and display the results on an interactive star map.
In Evidence
Comet 201P/LONEOS
Comet 201P/LONEOS is currently in the constellation of Libra. The current Right Ascension of Comet 201P/LONEOS is 14h 50m 55s and the Declination is -18° 44’ 23” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 201P/LONEOS is 26.46 (JPL).
Today's rise, transit and set times of Comet 201P/LONEOS from Greenwich, United Kingdom [change] (all times relative to the local timezone Europe/London):
- 201P/LONEOS is above the horizon from Greenwich, United Kingdom [change].
- Right now it is placed in the South-South-West direction at an altitude of 16° above the horizon.
- 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.
Comet 201P/LONEOS Position and Finder Charts
Below we provide Comet 201P/LONEOS finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.
Field of view: 50x30 degrees
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Field of view: 10x6 degrees
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Higher 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.
Comet 201P/LONEOS Distance from Earth
The distance of Comet 201P/LONEOS from Earth is currently 600,441,448 kilometers, equivalent to 4.013703 Astronomical Units. Light takes 33 minutes and 22.8571 seconds to travel from Comet 201P/LONEOS and arrive to us.
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 of Comet 201P/LONEOS to Earth
Between 1 January 2013 and 30 December 2100, 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.
Comet 201P/LONEOS Brightness
The current visual magnitude of Comet 201P/LONEOS is 26.46.
The observed magnitude and coma diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behavior of comets. When available, please refer to the Observed Magnitude value and consider the Estimated 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.
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.
Comet 201P/LONEOS 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 |
Visualization of Comet 201P/LONEOS Orbit
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 201P/LONEOS with respect of the Sun and the orbits of the major planets. The position of Comet 201P/LONEOS 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!
View Comet 201P/LONEOS in the 3D Solar System Simulator
Comet 201P/LONEOS 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. Click on each row of the table to locate Comet 201P/LONEOS in our Online Planetarium at the chosen date.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2023 Mar 22 | 14h 54m 21s | -18° 53’ 31” | 26.46 | Libra |
| 2023 Mar 23 | 14h 53m 56s | -18° 52’ 27” | 26.46 | Libra |
| 2023 Mar 24 | 14h 53m 29s | -18° 51’ 18” | 26.46 | Libra |
| 2023 Mar 25 | 14h 53m 00s | -18° 50’ 06” | 26.46 | Libra |
| 2023 Mar 26 | 14h 52m 32s | -18° 48’ 48” | 26.46 | Libra |
| 2023 Mar 27 | 14h 52m 02s | -18° 47’ 29” | 26.46 | Libra |
| 2023 Mar 28 | 14h 51m 32s | -18° 46’ 05” | 26.46 | Libra |
| 2023 Mar 29 | 14h 51m 01s | -18° 44’ 36” | 26.46 | Libra |
| 2023 Mar 30 | 14h 50m 30s | -18° 43’ 05” | 26.46 | Libra |
| 2023 Mar 31 | 14h 49m 56s | -18° 41’ 29” | 26.46 | Libra |
| 2023 Apr 01 | 14h 49m 23s | -18° 39’ 50” | 26.46 | Libra |
| 2023 Apr 02 | 14h 48m 51s | -18° 38’ 06” | 26.46 | Libra |
| 2023 Apr 03 | 14h 48m 15s | -18° 36’ 20” | 26.46 | Libra |
| 2023 Apr 04 | 14h 47m 40s | -18° 34’ 28” | 26.46 | Libra |