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🌎  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 24m 42s and the Declination is +00° 14’ 23” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 209P/LINEAR is 24.21 (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 24m 42s
+00° 14’ 23”

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 October, 26 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 209P/LINEAR in Cetus on October, 26 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.

RA: 02h 24m 42s
Dec: +00° 14’ 23”
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 592,944,335 kilometers, equivalent to 3.963588 Astronomical Units. Light takes 32 minutes and 57.8494 seconds to travel from Comet 209P/LINEAR and arrive to us.

32 minutes and 57.8494 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 8,310,272 kilometers:

Thu May 29 2014

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 24.21.


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: 89.8°
Max altitude: 38.8°
Azimuth: 270.3°

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 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 Oct 19 02h 30m 11s +00° 35’ 12” 24.21 Cetus
2021 Oct 20 02h 29m 29s +00° 32’ 17” 24.21 Cetus
2021 Oct 21 02h 28m 45s +00° 29’ 25” 24.21 Cetus
2021 Oct 22 02h 28m 01s +00° 26’ 35” 24.21 Cetus
2021 Oct 23 02h 27m 18s +00° 23’ 48” 24.21 Cetus
2021 Oct 24 02h 26m 34s +00° 21’ 05” 24.21 Cetus
2021 Oct 25 02h 25m 49s +00° 18’ 24” 24.21 Cetus
2021 Oct 26 02h 25m 05s +00° 15’ 46” 24.21 Cetus
2021 Oct 27 02h 24m 20s +00° 13’ 10” 24.21 Cetus
2021 Oct 28 02h 23m 35s +00° 10’ 39” 24.21 Cetus
2021 Oct 29 02h 22m 50s +00° 08’ 11” 24.21 Cetus
2021 Oct 30 02h 22m 06s +00° 05’ 47” 24.21 Cetus
2021 Oct 31 02h 21m 21s +00° 03’ 25” 24.21 Cetus
2021 Nov 01 02h 20m 36s +00° 01’ 09” 24.22 Cetus