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Comet 217P/LINEAR

Available Resources

Comet 217P/LINEAR Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 217P/LINEAR is now with respect to the brightest stars and constellations.

More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Comet 217P/LINEAR in Leo on September, 24 2018
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
10h 30m 56s
+13° 46’ 34”

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 behvior 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.

Comet 217P/LINEAR Rise and Set Times

Today's Comet 217P/LINEAR rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 76.2°
Max altitude: 52.3°
Azimuth: 283.8°

Comet 217P/LINEAR Orbit Diagram

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 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
2018 Sep 17 10h 23m 53s +14° 17’ 02” 21.68 Leo
2018 Sep 18 10h 24m 51s +14° 12’ 51” 21.69 Leo
2018 Sep 19 10h 25m 49s +14° 08’ 43” 21.69 Leo
2018 Sep 20 10h 26m 47s +14° 04’ 35” 21.70 Leo
2018 Sep 21 10h 27m 42s +14° 00’ 29” 21.70 Leo
2018 Sep 22 10h 28m 40s +13° 56’ 23” 21.70 Leo
2018 Sep 23 10h 29m 35s +13° 52’ 21” 21.71 Leo
2018 Sep 24 10h 30m 32s +13° 48’ 20” 21.71 Leo
2018 Sep 25 10h 31m 27s +13° 44’ 21” 21.71 Leo
2018 Sep 26 10h 32m 22s +13° 40’ 23” 21.72 Leo
2018 Sep 27 10h 33m 17s +13° 36’ 26” 21.72 Leo
2018 Sep 28 10h 34m 12s +13° 32’ 33” 21.72 Leo
2018 Sep 29 10h 35m 07s +13° 28’ 41” 21.73 Leo
2018 Sep 30 10h 36m 01s +13° 24’ 51” 21.73 Leo

Distance of Comet 217P/LINEAR from Earth

The following chart shows the distance of Comet 217P/LINEAR from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.

The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 217P/LINEAR is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 217P/LINEAR from Earth between January 2013 and December 2075

Light Curve of Comet 217P/LINEAR

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.

Predicted magnitude of Comet 217P/LINEAR between January 2013 and December 2075

Comet 217P/LINEAR Orbital Elements

The following table lists the orbital elements of Comet 217P/LINEAR at epoch 03 August 2010 00:00 UTC (JD: 2455412.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.68961213
Orbit inclination i 12.88039448°
Perihelion distance q 1.22423336 AU
183,142,704 km
Aphelion distance Q 6.66417642 AU
996,946,604 km
Semi-major axis a 3.94420489 AU
590,044,654 km
Orbital period period 7.8300 years
2,861.1302 days
Date of perihelion transit Tp 2009-Sep-08 23:37:53
2,455,083.4846 JD
Next perihelion transit 2017-Jul-10 02:45
2,457,944.6149 JD
Argument of perihelion peri 246.76407221967°
Longitude of the ascending node node 125.62091680402°
Mean anomaly M 41.398159765643°
Mean motion n 0.12582440°/day
Closest approach to Earth* 2048-Sep-08
Distance of closest approach* 0.39623993 AU
59,276,650 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.