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Comet 71P/Clark

Available Resources

Comet 71P/Clark Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 71P/Clark 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 71P/Clark in Aries on October, 20 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]
03h 19m 49s
+15° 05’ 10”
-
20.72
-

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 71P/Clark Rise and Set Times

Today's Comet 71P/Clark rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 74.9°
Max altitude: 53.6°
Azimuth: 285.1°

Comet 71P/Clark Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 71P/Clark with respect of the Sun and the orbits of the major planets. The position of Comet 71P/Clark 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!

Comet 71P/Clark Ephemeris

The following table lists the ephemerides of Comet 71P/Clark computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 71P/Clark in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2018 Oct 13 03h 25m 14s +15° 18’ 15” 20.70 Taurus
2018 Oct 14 03h 24m 33s +15° 16’ 36” 20.71 Taurus
2018 Oct 15 03h 23m 50s +15° 14’ 56” 20.71 Aries
2018 Oct 16 03h 23m 08s +15° 13’ 13” 20.71 Aries
2018 Oct 17 03h 22m 24s +15° 11’ 26” 20.71 Aries
2018 Oct 18 03h 21m 39s +15° 09’ 38” 20.72 Aries
2018 Oct 19 03h 20m 53s +15° 07’ 49” 20.72 Aries
2018 Oct 20 03h 20m 08s +15° 05’ 56” 20.72 Aries
2018 Oct 21 03h 19m 20s +15° 04’ 01” 20.73 Aries
2018 Oct 22 03h 18m 33s +15° 02’ 04” 20.73 Aries
2018 Oct 23 03h 17m 45s +15° 00’ 06” 20.73 Aries
2018 Oct 24 03h 16m 57s +14° 58’ 05” 20.74 Aries
2018 Oct 25 03h 16m 06s +14° 56’ 03” 20.74 Aries
2018 Oct 26 03h 15m 17s +14° 54’ 00” 20.75 Aries

Distance of Comet 71P/Clark from Earth

The following chart shows the distance of Comet 71P/Clark 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 71P/Clark is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 71P/Clark from Earth between January 2013 and December 2075

Light Curve of Comet 71P/Clark

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 71P/Clark, 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 71P/Clark between January 2013 and December 2075

Comet 71P/Clark Orbital Elements

The following table lists the orbital elements of Comet 71P/Clark at epoch 25 May 2017 00:00 UTC (JD: 2457899.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.49437814
Orbit inclination i 9.44534059°
Perihelion distance q 1.58621399 AU
237,294,236 km
Aphelion distance Q 4.68809542 AU
701,329,094 km
Semi-major axis a 3.13715471 AU
469,311,665 km
Orbital period period 5.5600 years
2,029.5620 days
Date of perihelion transit Tp 2017-Jun-30 04:53:53
2,457,934.7041 JD
Next perihelion transit 2023-Jan-19 18:23
2,459,964.2661 JD
Argument of perihelion peri 208.91678674111°
Longitude of the ascending node node 59.446279947463°
Mean anomaly M 353.75556367838°
Mean motion n 0.17737817°/day
Closest approach to Earth* 2017-Jun-11
Distance of closest approach* 0.58986000 AU
88,241,799 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.