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Comet 81P/Wild 2

Available Resources

Comet 81P/Wild 2 Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 81P/Wild 2 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 81P/Wild 2 in Aquarius on December, 10 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]
22h 11m 30s
-12° 34’ 43”
-
22.26
-

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 81P/Wild 2 Rise and Set Times

Today's Comet 81P/Wild 2 rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 102.6°
Max altitude: 25.9°
Azimuth: 257.4°

Comet 81P/Wild 2 Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 81P/Wild 2 with respect of the Sun and the orbits of the major planets. The position of Comet 81P/Wild 2 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 81P/Wild 2
View Comet 81P/Wild 2 in the 3D Solar System Simulator

Comet 81P/Wild 2 Ephemeris

The following table lists the ephemerides of Comet 81P/Wild 2 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 81P/Wild 2 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2018 Dec 03 22h 08m 17s -12° 52’ 55” 22.19 Aquarius
2018 Dec 04 22h 08m 40s -12° 50’ 43” 22.20 Aquarius
2018 Dec 05 22h 09m 05s -12° 48’ 26” 22.21 Aquarius
2018 Dec 06 22h 09m 29s -12° 46’ 06” 22.22 Aquarius
2018 Dec 07 22h 09m 55s -12° 43’ 44” 22.22 Aquarius
2018 Dec 08 22h 10m 20s -12° 41’ 17” 22.23 Aquarius
2018 Dec 09 22h 10m 46s -12° 38’ 48” 22.24 Aquarius
2018 Dec 10 22h 11m 13s -12° 36’ 15” 22.25 Aquarius
2018 Dec 11 22h 11m 42s -12° 33’ 41” 22.26 Aquarius
2018 Dec 12 22h 12m 10s -12° 31’ 01” 22.27 Aquarius
2018 Dec 13 22h 12m 38s -12° 28’ 21” 22.28 Aquarius
2018 Dec 14 22h 13m 06s -12° 25’ 36” 22.29 Aquarius
2018 Dec 15 22h 13m 36s -12° 22’ 48” 22.30 Aquarius
2018 Dec 16 22h 14m 07s -12° 19’ 58” 22.31 Aquarius

Distance of Comet 81P/Wild 2 from Earth

The following chart shows the distance of Comet 81P/Wild 2 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 81P/Wild 2 is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 81P/Wild 2 from Earth between January 2013 and December 2075

Light Curve of Comet 81P/Wild 2

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 81P/Wild 2, 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 81P/Wild 2 between January 2013 and December 2075

Comet 81P/Wild 2 Orbital Elements

The following table lists the orbital elements of Comet 81P/Wild 2 at epoch 04 September 2011 00:00 UTC (JD: 2455809.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.53707073
Orbit inclination i 3.23724755°
Perihelion distance q 1.59796866 AU
239,052,710 km
Aphelion distance Q 5.30575839 AU
793,730,159 km
Semi-major axis a 3.45186353 AU
516,391,435 km
Orbital period period 6.4100 years
2,342.4960 days
Date of perihelion transit Tp 2010-Feb-22 13:28:30
2,455,250.0615 JD
Next perihelion transit 2016-Jul-23 01:22
2,457,592.5574 JD
Argument of perihelion peri 41.75623208556°
Longitude of the ascending node node 136.09768554074°
Mean anomaly M 85.975761164276°
Mean motion n 0.15368223°/day
Closest approach to Earth* 2042-Apr-05
Distance of closest approach* 0.65385245 AU
97,814,934 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.