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Comet 11P/Tempel-Swift-LINEAR

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Comet 11P/Tempel-Swift-LINEAR Position

Comet 11P/Tempel-Swift-LINEAR is currently in the constellation of Aquila. The current Right Ascension is 20h 04m 56s and the Declination is -11° 10’ 58”.

20h 04m 56s
-11° 10’ 58”

Simplified sky chart showing where Comet 11P/Tempel-Swift-LINEAR is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Comet 11P/Tempel-Swift-LINEAR in Aquila on February, 21 2020
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]

Higher precision deep sky finder chart showing where Comet 11P/Tempel-Swift-LINEAR is right now (view fullscreen)

RA: 20h 04m 56s
Dec: -11° 10’ 58”
Deep sky finder chart for Comet 11P/Tempel-Swift-LINEAR
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 11P/Tempel-Swift-LINEAR?, a page that provides all the information needed to find Comet 11P/Tempel-Swift-LINEAR in the sky and additional links to sky charts.

Comet 11P/Tempel-Swift-LINEAR Distance

The distance of Comet 11P/Tempel-Swift-LINEAR from Earth is currently 552,733,281 kilometers, equivalent to 3.694794 Astronomical Units. Light takes 30 minutes and 43.7198 seconds to travel from Comet 11P/Tempel-Swift-LINEAR and arrive to us.

30 minutes and 43.7198 seconds

The following chart shows the distance of Comet 11P/Tempel-Swift-LINEAR 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 11P/Tempel-Swift-LINEAR from Earth between January 2013 and January 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 11P/Tempel-Swift-LINEAR from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 11P/Tempel-Swift-LINEAR to Earth

Between January 2013 and January 2100 the closest approach of Comet 11P/Tempel-Swift-LINEAR to Earth happens on Thu Nov 12 2026 at a distance of 0.40123908 Astronomical Units, or 60,024,512 kilometers:

Thu Nov 12 2026

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

Comet 11P/Tempel-Swift-LINEAR brightness

The current visual magnitude of Comet 11P/Tempel-Swift-LINEAR is 24.87.


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 behavior 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 11P/Tempel-Swift-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 11P/Tempel-Swift-LINEAR between January 2013 and January 2100

Comet 11P/Tempel-Swift-LINEAR 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 11P/Tempel-Swift-LINEAR rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 101.2°
Max altitude: 27.3°
Azimuth: 258.8°
Comet 11P/Tempel-Swift-LINEAR is below the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Comet 11P/Tempel-Swift-LINEAR touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet 11P/Tempel-Swift-LINEAR Orbital Elements

The following table lists the orbital elements of Comet 11P/Tempel-Swift-LINEAR at epoch 01 March 2008 00:00 UTC (JD: 2454527.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.54491240
Orbit inclination i 13.55352223°
Perihelion distance q 1.55357868 AU
232,412,063 km
Aphelion distance Q 5.27402413 AU
788,982,782 km
Semi-major axis a 3.41380141 AU
510,697,422 km
Orbital period period 6.3100 years
2,303.8585 days
Date of perihelion transit Tp 2008-May-04 15:46:52
2,454,591.1575 JD
Next perihelion transit 2014-Aug-25 12:23
2,456,895.0161 JD
Argument of perihelion peri 163.89955607774°
Longitude of the ascending node node 240.52473611351°
Mean anomaly M 350.05289720324°
Mean motion n 0.15625959°/day

Visualization of Comet 11P/Tempel-Swift-LINEAR Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 11P/Tempel-Swift-LINEAR with respect of the Sun and the orbits of the major planets. The position of Comet 11P/Tempel-Swift-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 11P/Tempel-Swift-LINEAR
View Comet 11P/Tempel-Swift-LINEAR in the 3D Solar System Simulator

Comet 11P/Tempel-Swift-LINEAR 15 Days Ephemeris

The following table lists the ephemerides of Comet 11P/Tempel-Swift-LINEAR computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 11P/Tempel-Swift-LINEAR in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Feb 14 19h 53m 30s -12° 00’ 30” 25.01 Sagittarius
2020 Feb 15 19h 55m 00s -11° 54’ 19” 24.99 Sagittarius
2020 Feb 16 19h 56m 30s -11° 48’ 02” 24.97 Sagittarius
2020 Feb 17 19h 58m 00s -11° 41’ 39” 24.95 Aquila
2020 Feb 18 19h 59m 29s -11° 35’ 12” 24.93 Aquila
2020 Feb 19 20h 00m 59s -11° 28’ 41” 24.92 Aquila
2020 Feb 20 20h 02m 29s -11° 22’ 04” 24.90 Aquila
2020 Feb 21 20h 03m 57s -11° 15’ 23” 24.88 Aquila
2020 Feb 22 20h 05m 27s -11° 08’ 35” 24.86 Aquila
2020 Feb 23 20h 06m 56s -11° 01’ 44” 24.84 Capricornus
2020 Feb 24 20h 08m 26s -10° 54’ 47” 24.82 Capricornus
2020 Feb 25 20h 09m 56s -10° 47’ 45” 24.80 Capricornus
2020 Feb 26 20h 11m 26s -10° 40’ 39” 24.78 Capricornus
2020 Feb 27 20h 12m 55s -10° 33’ 28” 24.76 Capricornus