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Comet 8P/Tuttle

Comet 8P/Tuttle is currently in the constellation of Andromeda. The current Right Ascension of Comet 8P/Tuttle is 02h 00m 12s and the Declination is +45° 08’ 53” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 8P/Tuttle is 18.35 (JPL).

Summary of key facts about Comet 8P/Tuttle [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

02h 00m 12s
+45° 08’ 53”
  • 8P/Tuttle is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the North-West direction at an altitude of 30° above the horizon.
  • Given its current magnitude, 8P/Tuttle is visible only through long exposure photography.
  • See also 8P/Tuttle rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Comet 8P/Tuttle available on TheSkyLive:

Available Resources

Comet 8P/Tuttle Position and Finder Charts

Below we provide Comet 8P/Tuttle finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet 8P/Tuttle in Andromeda on May, 08 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 8P/Tuttle in Andromeda on May, 08 2021
Field of view: 10x6 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, 60 arcmin wide, showing where Comet 8P/Tuttle is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 02h 00m 12s
Dec: +45° 08’ 53”
Deep sky finder chart for Comet 8P/Tuttle
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 8P/Tuttle?, a page that provides all the information needed to find Comet 8P/Tuttle in the sky and additional links to sky charts.

Comet 8P/Tuttle Distance from Earth

The distance of Comet 8P/Tuttle from Earth is currently 398,526,661 kilometers, equivalent to 2.663986 Astronomical Units. Light takes 22 minutes and 9.3419 seconds to travel from Comet 8P/Tuttle and arrive to us.

22 minutes and 9.3419 seconds

The following chart shows the distance of Comet 8P/Tuttle 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 8P/Tuttle 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 8P/Tuttle from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 8P/Tuttle to Earth

Between January 2013 and December 2100, the closest approach of Comet 8P/Tuttle to Earth happens on Mon Dec 28 2048 at a distance of 0.175544 Astronomical Units, or 26,261,020 kilometers:

Mon Dec 28 2048

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

Comet 8P/Tuttle brightness

The current visual magnitude of Comet 8P/Tuttle is 18.35.


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 8P/Tuttle, 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 8P/Tuttle between January 2013 and December 2100

Comet 8P/Tuttle rise and set times

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

Comet 8P/Tuttle is circumpolar and transits at 10:54 UTC (altitude: 83.7°)

The rise and set times are defined as the time at which the upper limb of Comet 8P/Tuttle 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 8P/Tuttle Orbital Elements

The following table lists the orbital elements of Comet 8P/Tuttle at epoch 31 December 2007 00:00 UTC (JD: 2454466.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.81984890
Orbit inclination i 54.98327780°
Perihelion distance q 1.02713203 AU
153,656,766 km
Aphelion distance Q 10.37587400 AU
1,552,208,660 km
Semi-major axis a 5.70150302 AU
852,932,713 km
Orbital period period 13.6100 years
4,972.5879 days
Date of perihelion transit Tp 2008-Jan-27 00:33:02
2,454,492.5229 JD
Next perihelion transit 2021-Sep-07 14:39
2,459,465.1108 JD
Argument of perihelion peri 207.50676252373°
Longitude of the ascending node node 270.34158902943°
Mean anomaly M 358.11601885104°
Mean motion n 0.07239691°/day

Visualization of Comet 8P/Tuttle Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 8P/Tuttle with respect of the Sun and the orbits of the major planets. The position of Comet 8P/Tuttle 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 8P/Tuttle 15 Days Ephemeris

The following table lists the ephemerides of Comet 8P/Tuttle computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 8P/Tuttle in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 May 01 01h 33m 29s +44° 37’ 01” 18.48 Andromeda
2021 May 02 01h 36m 52s +44° 41’ 53” 18.47 Andromeda
2021 May 03 01h 40m 17s +44° 46’ 32” 18.45 Andromeda
2021 May 04 01h 43m 42s +44° 50’ 58” 18.43 Andromeda
2021 May 05 01h 47m 09s +44° 55’ 12” 18.42 Andromeda
2021 May 06 01h 50m 39s +44° 59’ 12” 18.40 Andromeda
2021 May 07 01h 54m 09s +45° 02’ 58” 18.38 Andromeda
2021 May 08 01h 57m 39s +45° 06’ 30” 18.36 Andromeda
2021 May 09 02h 01m 12s +45° 09’ 48” 18.35 Andromeda
2021 May 10 02h 04m 45s +45° 12’ 51” 18.33 Andromeda
2021 May 11 02h 08m 20s +45° 15’ 38” 18.31 Andromeda
2021 May 12 02h 11m 57s +45° 18’ 09” 18.29 Andromeda
2021 May 13 02h 15m 33s +45° 20’ 24” 18.28 Andromeda
2021 May 14 02h 19m 11s +45° 22’ 22” 18.26 Andromeda