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Comet 230P/LINEAR

Comet 230P/LINEAR is currently in the constellation of Capricornus. The current Right Ascension of Comet 230P/LINEAR is 21h 57m 09s and the Declination is -18° 05’ 13” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 230P/LINEAR is 20.96 (JPL).

Summary of key facts about Comet 230P/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]:

21h 57m 09s
-18° 05’ 13”

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Additional information about Comet 230P/LINEAR available on TheSkyLive:

Available Resources

Comet 230P/LINEAR Position and Finder Charts

Below we provide Comet 230P/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 230P/LINEAR in Capricornus on May, 07 2021
Field of view: 50x30 degrees
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Map showing Comet 230P/LINEAR in Capricornus on May, 07 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 230P/LINEAR is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 21h 57m 09s
Dec: -18° 05’ 13”
Deep sky finder chart for Comet 230P/LINEAR
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 230P/LINEAR?, a page that provides all the information needed to find Comet 230P/LINEAR in the sky and additional links to sky charts.

Comet 230P/LINEAR Distance from Earth

The distance of Comet 230P/LINEAR from Earth is currently 459,422,918 kilometers, equivalent to 3.071053 Astronomical Units. Light takes 25 minutes and 32.4699 seconds to travel from Comet 230P/LINEAR and arrive to us.

25 minutes and 32.4699 seconds

The following chart shows the distance of Comet 230P/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 230P/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 230P/LINEAR from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 230P/LINEAR to Earth

Between January 2013 and December 2100, the closest approach of Comet 230P/LINEAR to Earth happens on Sat Dec 5 2015 at a distance of 0.547771 Astronomical Units, or 81,945,377 kilometers:

Sat Dec 5 2015

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

Comet 230P/LINEAR brightness

The current visual magnitude of Comet 230P/LINEAR is 20.96.


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 230P/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 230P/LINEAR between January 2013 and December 2100

Comet 230P/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 230P/LINEAR rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 108.1°
Max altitude: 20.4°
Azimuth: 251.9°

The rise and set times are defined as the time at which the upper limb of Comet 230P/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 230P/LINEAR Orbital Elements

The following table lists the orbital elements of Comet 230P/LINEAR at epoch 28 June 2013 00:00 UTC (JD: 2456472.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.56346343
Orbit inclination i 14.65215695°
Perihelion distance q 1.48453819 AU
222,083,752 km
Aphelion distance Q 5.31689968 AU
795,396,872 km
Semi-major axis a 3.40071893 AU
508,740,312 km
Orbital period period 6.2700 years
2,290.6278 days
Date of perihelion transit Tp 2015-Nov-17 17:58:50
2,457,344.2492 JD
Next perihelion transit 2022-Feb-24 09:02
2,459,634.8770 JD
Argument of perihelion peri 308.89211547012°
Longitude of the ascending node node 112.40286571746°
Mean anomaly M 222.99402117335°
Mean motion n 0.15716215°/day

Visualization of Comet 230P/LINEAR Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 230P/LINEAR with respect of the Sun and the orbits of the major planets. The position of Comet 230P/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 230P/LINEAR
View Comet 230P/LINEAR in the 3D Solar System Simulator

Comet 230P/LINEAR 15 Days Ephemeris

The following table lists the ephemerides of Comet 230P/LINEAR computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 230P/LINEAR in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Apr 30 21h 48m 57s -18° 16’ 17” 21.12 Capricornus
2021 May 01 21h 50m 02s -18° 14’ 39” 21.10 Capricornus
2021 May 02 21h 51m 05s -18° 13’ 05” 21.08 Capricornus
2021 May 03 21h 52m 06s -18° 11’ 34” 21.06 Capricornus
2021 May 04 21h 53m 09s -18° 10’ 08” 21.04 Capricornus
2021 May 05 21h 54m 11s -18° 08’ 45” 21.02 Capricornus
2021 May 06 21h 55m 13s -18° 07’ 27” 21.00 Capricornus
2021 May 07 21h 56m 13s -18° 06’ 15” 20.98 Capricornus
2021 May 08 21h 57m 14s -18° 05’ 06” 20.96 Capricornus
2021 May 09 21h 58m 14s -18° 04’ 00” 20.94 Capricornus
2021 May 10 21h 59m 12s -18° 03’ 02” 20.92 Aquarius
2021 May 11 22h 00m 11s -18° 02’ 07” 20.90 Aquarius
2021 May 12 22h 01m 10s -18° 01’ 18” 20.88 Aquarius
2021 May 13 22h 02m 08s -18° 00’ 33” 20.86 Aquarius