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Comet 64P/Swift-Gehrels

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Comet 64P/Swift-Gehrels Position

Comet 64P/Swift-Gehrels is currently in the constellation of Leo. The current Right Ascension is 11h 04m 10s and the Declination is +01° 03’ 56”.

11h 04m 10s
+01° 03’ 56”

Simplified sky chart showing where Comet 64P/Swift-Gehrels is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet 64P/Swift-Gehrels in Leo on October, 16 2019
Field of view: 60x30 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]

Hihgher precision deep sky finder chart showing where Comet 64P/Swift-Gehrels is right now (view fullscreen)

RA: 11h 04m 10s
Dec: +01° 03’ 56”
Deep sky finder chart for Comet 64P/Swift-Gehrels
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 64P/Swift-Gehrels?, a page that provides all the information needed to find Comet 64P/Swift-Gehrels in the sky and additional links to sky charts.

Comet 64P/Swift-Gehrels Distance

The distance of Comet 64P/Swift-Gehrels from Earth is currently 655,624,279 kilometers, equivalent to 4.382578 Astronomical Units. Light takes 36 minutes and 26.9272 seconds to travel from Comet 64P/Swift-Gehrels and arrive to us.

36 minutes and 26.9272 seconds

The following chart shows the distance of Comet 64P/Swift-Gehrels 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.

Distance of Comet 64P/Swift-Gehrels from Earth between January 2013 and December 2100

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 64P/Swift-Gehrels from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 64P/Swift-Gehrels to Earth

Between January 2013 and December 2100 the closest approach of Comet 64P/Swift-Gehrels to Earth happens on Sun Oct 28 2018 at a distance of 0.44480495 Astronomical Units, or 66,541,874 kilometers:

Sun Oct 28 2018

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

Comet 64P/Swift-Gehrels brightness

The current visual magnitude of Comet 64P/Swift-Gehrels is 21.78.


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.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 64P/Swift-Gehrels, 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 64P/Swift-Gehrels between January 2013 and December 2100

Comet 64P/Swift-Gehrels rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Comet 64P/Swift-Gehrels rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 88.9°
Max altitude: 39.6°
Azimuth: 271.0°
Comet 64P/Swift-Gehrels is above the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Comet 64P/Swift-Gehrels touches the horizon, consideting the effect of the atmospheric refraction. As the atmoshpere conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet 64P/Swift-Gehrels Orbital Elements

The following table lists the orbital elements of Comet 64P/Swift-Gehrels at epoch 07 December 2017 00:00 UTC (JD: 2458095.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.68731946
Orbit inclination i 8.94839009°
Perihelion distance q 1.39335309 AU
208,442,656 km
Aphelion distance Q 7.51895766 AU
1,124,820,058 km
Semi-major axis a 4.45615538 AU
666,631,357 km
Orbital period period 9.4100 years
3,435.8873 days
Date of perihelion transit Tp 2018-Nov-03 21:53:28
2,458,426.4121 JD
Next perihelion transit 2028-Mar-31 19:11
2,461,862.2995 JD
Argument of perihelion peri 97.14410525138°
Longitude of the ascending node node 300.00098545431°
Mean anomaly M 325.32820872749°
Mean motion n 0.10477643°/day

Visualization of Comet 64P/Swift-Gehrels Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 64P/Swift-Gehrels with respect of the Sun and the orbits of the major planets. The position of Comet 64P/Swift-Gehrels 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 64P/Swift-Gehrels
View Comet 64P/Swift-Gehrels in the 3D Solar System Simulator

Comet 64P/Swift-Gehrels 15 Days Ephemeris

The following table lists the ephemerides of Comet 64P/Swift-Gehrels computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 64P/Swift-Gehrels in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Oct 09 10h 57m 15s +01° 57’ 36” 21.74 Leo
2019 Oct 10 10h 58m 14s +01° 50’ 07” 21.75 Leo
2019 Oct 11 10h 59m 12s +01° 42’ 38” 21.75 Leo
2019 Oct 12 11h 00m 11s +01° 35’ 12” 21.76 Leo
2019 Oct 13 11h 01m 08s +01° 27’ 47” 21.76 Leo
2019 Oct 14 11h 02m 04s +01° 20’ 24” 21.77 Leo
2019 Oct 15 11h 03m 01s +01° 13’ 03” 21.77 Leo
2019 Oct 16 11h 03m 56s +01° 05’ 43” 21.78 Leo
2019 Oct 17 11h 04m 53s +00° 58’ 24” 21.78 Leo
2019 Oct 18 11h 05m 48s +00° 51’ 07” 21.79 Leo
2019 Oct 19 11h 06m 42s +00° 43’ 53” 21.79 Leo
2019 Oct 20 11h 07m 36s +00° 36’ 39” 21.80 Leo
2019 Oct 21 11h 08m 30s +00° 29’ 29” 21.80 Leo
2019 Oct 22 11h 09m 23s +00° 22’ 19” 21.81 Leo