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Comet 249P/LINEAR

Comet 249P/LINEAR is currently in the constellation of Gemini. The current Right Ascension of Comet 249P/LINEAR is 07h 02m 03s and the Declination is +19° 20’ 34” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 249P/LINEAR is 20.47 (JPL).

Summary of key facts about Comet 249P/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]:

07h 02m 03s
+19° 20’ 34”
  • 249P/LINEAR is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-West direction at an altitude of 54° above the horizon.
  • Given its current magnitude, 249P/LINEAR is visible only through long exposure photography.
  • See also 249P/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 249P/LINEAR available on TheSkyLive:

Available Resources

Comet 249P/LINEAR Position and Finder Charts

Below we provide Comet 249P/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 249P/LINEAR in Gemini on October, 25 2020
Field of view: 50x30 degrees
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Map showing Comet 249P/LINEAR in Gemini on October, 25 2020
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 249P/LINEAR is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 07h 02m 03s
Dec: +19° 20’ 34”
Deep sky finder chart for Comet 249P/LINEAR
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 249P/LINEAR?, a page that provides all the information needed to find Comet 249P/LINEAR in the sky and additional links to sky charts.

Comet 249P/LINEAR Distance from Earth

The distance of Comet 249P/LINEAR from Earth is currently 211,920,427 kilometers, equivalent to 1.416601 Astronomical Units. Light takes 11 minutes and 46.8905 seconds to travel from Comet 249P/LINEAR and arrive to us.

11 minutes and 46.8905 seconds

The following chart shows the distance of Comet 249P/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 249P/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 249P/LINEAR from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 249P/LINEAR to Earth

Between January 2013 and December 2100, the closest approach of Comet 249P/LINEAR to Earth happens on Thu Apr 23 2076 at a distance of 0.050577 Astronomical Units, or 7,566,218 kilometers:

Thu Apr 23 2076

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

Comet 249P/LINEAR brightness

The current visual magnitude of Comet 249P/LINEAR is 20.47.


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 249P/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 249P/LINEAR between January 2013 and December 2100

Comet 249P/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 249P/LINEAR rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.7°
Max altitude: 57.9°
Azimuth: 289.3°

The rise and set times are defined as the time at which the upper limb of Comet 249P/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 249P/LINEAR Orbital Elements

The following table lists the orbital elements of Comet 249P/LINEAR at epoch 27 October 2013 00:00 UTC (JD: 2456593.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.81706208
Orbit inclination i 8.42165006°
Perihelion distance q 0.50728701 AU
75,889,056 km
Aphelion distance Q 5.03871481 AU
753,781,008 km
Semi-major axis a 2.77300091 AU
414,835,032 km
Orbital period period 4.6200 years
1,686.6441 days
Date of perihelion transit Tp 2015-Nov-27 17:02:36
2,457,354.2101 JD
Next perihelion transit 2020-Jul-10 08:30
2,459,040.8542 JD
Argument of perihelion peri 64.224923369873°
Longitude of the ascending node node 240.39275432019°
Mean anomaly M 197.63281354743°
Mean motion n 0.21344159°/day

Visualization of Comet 249P/LINEAR Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 249P/LINEAR with respect of the Sun and the orbits of the major planets. The position of Comet 249P/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 249P/LINEAR
View Comet 249P/LINEAR in the 3D Solar System Simulator

Comet 249P/LINEAR 15 Days Ephemeris

The following table lists the ephemerides of Comet 249P/LINEAR computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 249P/LINEAR in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Oct 18 07h 05m 35s +19° 46’ 37” 20.42 Gemini
2020 Oct 19 07h 05m 15s +19° 42’ 51” 20.42 Gemini
2020 Oct 20 07h 04m 51s +19° 39’ 10” 20.43 Gemini
2020 Oct 21 07h 04m 24s +19° 35’ 30” 20.44 Gemini
2020 Oct 22 07h 03m 56s +19° 31’ 54” 20.45 Gemini
2020 Oct 23 07h 03m 24s +19° 28’ 23” 20.45 Gemini
2020 Oct 24 07h 02m 51s +19° 24’ 53” 20.46 Gemini
2020 Oct 25 07h 02m 13s +19° 21’ 29” 20.47 Gemini
2020 Oct 26 07h 01m 35s +19° 18’ 06” 20.48 Gemini
2020 Oct 27 07h 00m 52s +19° 14’ 48” 20.48 Gemini
2020 Oct 28 07h 00m 07s +19° 11’ 31” 20.49 Gemini
2020 Oct 29 06h 59m 21s +19° 08’ 18” 20.50 Gemini
2020 Oct 30 06h 58m 31s +19° 05’ 08” 20.50 Gemini
2020 Oct 31 06h 57m 38s +19° 02’ 03” 20.51 Gemini