Comet 217P/LINEAR
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.
High Precision Live Sky Chart
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.
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!
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 Dec 04 | 11h 17m 54s | +11° 11’ 20” | 21.74 | Leo |
| 2018 Dec 05 | 11h 18m 14s | +11° 11’ 44” | 21.74 | Leo |
| 2018 Dec 06 | 11h 18m 32s | +11° 12’ 15” | 21.74 | Leo |
| 2018 Dec 07 | 11h 18m 48s | +11° 12’ 51” | 21.73 | Leo |
| 2018 Dec 08 | 11h 19m 05s | +11° 13’ 33” | 21.73 | Leo |
| 2018 Dec 09 | 11h 19m 19s | +11° 14’ 21” | 21.73 | Leo |
| 2018 Dec 10 | 11h 19m 35s | +11° 15’ 15” | 21.73 | Leo |
| 2018 Dec 11 | 11h 19m 49s | +11° 16’ 14” | 21.73 | Leo |
| 2018 Dec 12 | 11h 20m 02s | +11° 17’ 20” | 21.72 | Leo |
| 2018 Dec 13 | 11h 20m 13s | +11° 18’ 29” | 21.72 | Leo |
| 2018 Dec 14 | 11h 20m 25s | +11° 19’ 46” | 21.72 | Leo |
| 2018 Dec 15 | 11h 20m 35s | +11° 21’ 10” | 21.72 | Leo |
| 2018 Dec 16 | 11h 20m 44s | +11° 22’ 37” | 21.72 | Leo |
| 2018 Dec 17 | 11h 20m 53s | +11° 24’ 12” | 21.71 | 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.
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.
Comet 217P/LINEAR Orbital Elements
The following table lists the orbital elements of Comet 217P/LINEAR at epoch 04 August 2010 00:00 UTC (JD: 2455413.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.68961244 |
| Orbit inclination | i | 12.88038542° |
| Perihelion distance | q | 1.22423456 AU 183,142,884 km |
| Aphelion distance | Q |
6.66419081 AU 996,948,757 km |
| Semi-major axis | a |
3.94421268 AU 590,045,820 km |
| Orbital period | period |
7.8300 years 2,861.1387 days |
| Date of perihelion transit | Tp | 2009-Sep-08 23:38:08 2,455,083.4848 JD |
| Next perihelion transit | 2017-Jul-10 02:57 2,457,944.6235 JD |
|
| Argument of perihelion | peri | 246.7641713336° |
| Longitude of the ascending node | node | 125.62090728776° |
| Mean anomaly | M | 41.523839812298° |
| Mean motion | n | 0.12582403°/day |
| Closest approach to Earth* | 2048-Sep-08 | |
| Distance of closest approach* | 0.39623981 AU 59,276,632 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.