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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:41  ☀️ Transit: 13:03  🌅 Sunset: 19:26

Comet 217P/LINEAR

Comet 217P/LINEAR is currently in the constellation of Libra. The current Right Ascension of Comet 217P/LINEAR is 14h 51m 48s and the Declination is -00° 33’ 38” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 217P/LINEAR is 22.31 (JPL).

14h 51m 48s
-00° 33’ 38”

Today's rise, transit and set times of Comet 217P/LINEAR from Greenwich, United Kingdom [change] (all times relative to the local timezone Europe/London):

Azimuth: 90.6°
Max altitude: 37.9°
Azimuth: 269.4°
  • 217P/LINEAR is above the horizon from Greenwich, United Kingdom [change].
  • Right now it is placed in the South-East direction at an altitude of 28° above the horizon.
  • Given its current magnitude, 217P/LINEAR 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.

Available Resources

Comet 217P/LINEAR Position and Finder Charts

Below we provide Comet 217P/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 217P/LINEAR in Libra on March, 30 2023
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 217P/LINEAR in Libra on March, 30 2023
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 217P/LINEAR is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 14h 51m 48s
Dec: -00° 33’ 38”
Deep sky finder chart for Comet 217P/LINEAR
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 217P/LINEAR?, a page that provides all the information needed to find Comet 217P/LINEAR in the sky and additional links to sky charts.

Comet 217P/LINEAR Distance from Earth

The distance of Comet 217P/LINEAR from Earth is currently 720,696,376 kilometers, equivalent to 4.817558 Astronomical Units. Light takes 40 minutes and 3.9843 seconds to travel from Comet 217P/LINEAR and arrive to us.

40 minutes and 3.9843 seconds

The following chart shows the distance of Comet 217P/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.

Chart of the distance of Comet 217P/LINEAR from Earth in Astronomical Units (au)

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 217P/LINEAR from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach of Comet 217P/LINEAR to Earth

Between 1 January 2013 and 30 December 2100, the closest approach of Comet 217P/LINEAR to Earth happens on Tue Sep 8 2048 at a distance of 0.396240 Astronomical Units, or 59,276,666 kilometers:

Tue Sep 8 2048

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

Comet 217P/LINEAR Brightness

The current visual magnitude of Comet 217P/LINEAR is 22.31.


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 217P/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.

Chart of the magnitude of Comet 217P/LINEAR as a function of time

Comet 217P/LINEAR Orbital Elements

The following table lists the orbital elements of Comet 217P/LINEAR at epoch 11 August 2010 00:00 UTC (JD: 2455420.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.68961463
Orbit inclination i 12.88031481°
Perihelion distance q 1.22424331 AU
183,144,193 km
Aphelion distance Q 6.66429408 AU
996,964,205 km
Semi-major axis a 3.94426869 AU
590,054,199 km
Orbital period period 7.8335 years
2,861.1997 days
Date of perihelion transit Tp 2009-Sep-08 23:39:54
2,455,083.4861 JD
Next perihelion transit 2017-Jul-10 04:27
2,457,944.6857 JD
Argument of perihelion peri 246.76489240242°
Longitude of the ascending node node 125.62084153525°
Mean anomaly M 42.403549522719°
Mean motion n 0.12582135°/day

Visualization of Comet 217P/LINEAR Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 217P/LINEAR with respect of the Sun and the orbits of the major planets. The position of Comet 217P/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 217P/LINEAR
View Comet 217P/LINEAR in the 3D Solar System Simulator

Comet 217P/LINEAR 15 Days Ephemeris

The following table lists the ephemerides of Comet 217P/LINEAR computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 217P/LINEAR in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2023 Mar 23 14h 54m 48s -01° 03’ 30” 22.37 Libra
2023 Mar 24 14h 54m 29s -00° 59’ 49” 22.36 Libra
2023 Mar 25 14h 54m 07s -00° 56’ 07” 22.36 Libra
2023 Mar 26 14h 53m 45s -00° 52’ 23” 22.35 Libra
2023 Mar 27 14h 53m 24s -00° 48’ 38” 22.34 Libra
2023 Mar 28 14h 53m 00s -00° 44’ 53” 22.33 Libra
2023 Mar 29 14h 52m 36s -00° 41’ 08” 22.33 Libra
2023 Mar 30 14h 52m 13s -00° 37’ 21” 22.32 Libra
2023 Mar 31 14h 51m 47s -00° 33’ 33” 22.31 Libra
2023 Apr 01 14h 51m 23s -00° 29’ 47” 22.31 Virgo
2023 Apr 02 14h 50m 57s -00° 25’ 59” 22.30 Virgo
2023 Apr 03 14h 50m 30s -00° 22’ 12” 22.29 Virgo
2023 Apr 04 14h 50m 03s -00° 18’ 24” 22.29 Virgo
2023 Apr 05 14h 49m 36s -00° 14’ 36” 22.28 Virgo