Your guide to the Solar System and the night sky
Latest Perseverance Images received 0 hours 4 mins ago for Sol84, Sol83
🌎  Greenwich, United Kingdom [change]

Comet 209P/LINEAR

Comet 209P/LINEAR is currently in the constellation of Cetus. The current Right Ascension of Comet 209P/LINEAR is 02h 09m 40s and the Declination is +01° 10’ 37” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 209P/LINEAR is 24.89 (JPL).

Summary of key facts about Comet 209P/LINEAR [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

02h 09m 40s
+01° 10’ 37”
Cetus
24.89
  • 209P/LINEAR is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the West direction at an altitude of 3° above the horizon.
  • Given its current magnitude, 209P/LINEAR is visible only through long exposure photography.
  • See also 209P/LINEAR rise and set times.
  • 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.

Additional information about Comet 209P/LINEAR available on TheSkyLive:

Available Resources

Comet 209P/LINEAR Position and Finder Charts

Below we provide Comet 209P/LINEAR 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.

Map showing Comet 209P/LINEAR in Cetus on May, 16 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 209P/LINEAR in Cetus on May, 16 2021
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet 209P/LINEAR is right now. Click on the image to see a more detailed fullscreen tracker view.

209P/LINEAR
RA: 02h 09m 40s
Dec: +01° 10’ 37”
Deep sky finder chart for Comet 209P/LINEAR
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 209P/LINEAR?, a page that provides all the information needed to find Comet 209P/LINEAR in the sky and additional links to sky charts.

Comet 209P/LINEAR Distance from Earth

The distance of Comet 209P/LINEAR from Earth is currently 840,491,867 kilometers, equivalent to 5.618341 Astronomical Units. Light takes 46 minutes and 43.5791 seconds to travel from Comet 209P/LINEAR and arrive to us.

840,491,867
5.618341
46 minutes and 43.5791 seconds

The following chart shows the distance of Comet 209P/LINEAR 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.

Distance of Comet 209P/LINEAR from Earth between January 2013 and December 2100

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 209P/LINEAR from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 209P/LINEAR to Earth

Between January 2013 and December 2100, the closest approach of Comet 209P/LINEAR to Earth happens on Thu May 29 2014 at a distance of 0.055551 Astronomical Units, or 8,310,292 kilometers:

Thu May 29 2014
8,310,292
0.055551

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

Comet 209P/LINEAR brightness

The current visual magnitude of Comet 209P/LINEAR is 24.89.

24.89
-
-

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 209P/LINEAR, 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.

Predicted magnitude of Comet 209P/LINEAR between January 2013 and December 2100

Comet 209P/LINEAR rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Comet 209P/LINEAR rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 88.9°
Max altitude: 39.7°
Azimuth: 271.2°

The rise and set times are defined as the time at which the upper limb of Comet 209P/LINEAR touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet 209P/LINEAR Orbital Elements

The following table lists the orbital elements of Comet 209P/LINEAR at epoch 20 January 2012 00:00 UTC (JD: 2455947.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.69202140
Orbit inclination i 20.61912261°
Perihelion distance q 0.90284100 AU
135,063,092 km
Aphelion distance Q 4.96017032 AU
742,030,920 km
Semi-major axis a 2.93150566 AU
438,547,006 km
Orbital period period 5.0200 years
1,833.3042 days
Date of perihelion transit Tp 2014-Apr-23 05:23:18
2,456,770.7245 JD
Next perihelion transit 2019-Apr-30 12:41
2,458,604.0287 JD
Argument of perihelion peri 152.13065928179°
Longitude of the ascending node node 63.608318863063°
Mean anomaly M 198.34607101666°
Mean motion n 0.19636676°/day

Visualization of Comet 209P/LINEAR Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 209P/LINEAR with respect of the Sun and the orbits of the major planets. The position of Comet 209P/LINEAR 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!

Orbit Diagram of Comet 209P/LINEAR
View Comet 209P/LINEAR in the 3D Solar System Simulator

Comet 209P/LINEAR 15 Days Ephemeris

The following table lists the ephemerides of Comet 209P/LINEAR computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 209P/LINEAR in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 May 09 02h 03m 47s +00° 37’ 41” 24.90 Cetus
2021 May 10 02h 04m 33s +00° 42’ 07” 24.90 Cetus
2021 May 11 02h 05m 21s +00° 46’ 32” 24.89 Cetus
2021 May 12 02h 06m 06s +00° 50’ 53” 24.89 Cetus
2021 May 13 02h 06m 52s +00° 55’ 12” 24.89 Cetus
2021 May 14 02h 07m 37s +00° 59’ 27” 24.89 Cetus
2021 May 15 02h 08m 24s +01° 03’ 41” 24.89 Cetus
2021 May 16 02h 09m 10s +01° 07’ 50” 24.89 Cetus
2021 May 17 02h 09m 55s +01° 11’ 57” 24.89 Cetus
2021 May 18 02h 10m 40s +01° 16’ 01” 24.89 Cetus
2021 May 19 02h 11m 25s +01° 20’ 03” 24.89 Cetus
2021 May 20 02h 12m 10s +01° 24’ 01” 24.89 Cetus
2021 May 21 02h 12m 55s +01° 27’ 56” 24.89 Cetus
2021 May 22 02h 13m 39s +01° 31’ 49” 24.88 Cetus