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🌎  Observing from: Greenwich, United Kingdom [change]

Comet 8P/Tuttle

Comet 8P/Tuttle is currently in the constellation of Sagittarius. The current Right Ascension of Comet 8P/Tuttle is 18h 03m 13s and the Declination is -31° 09’ 40” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 8P/Tuttle is 21.72 (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]:

18h 03m 13s
-31° 09’ 40”
  • 8P/Tuttle is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South direction at an altitude of 7° 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 Sagittarius on January, 29 2023
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 8P/Tuttle in Sagittarius on January, 29 2023
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: 18h 03m 13s
Dec: -31° 09’ 40”
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 893,811,196 kilometers, equivalent to 5.974759 Astronomical Units. Light takes 49 minutes and 41.4332 seconds to travel from Comet 8P/Tuttle and arrive to us.

49 minutes and 41.4332 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 0.175435 Astronomical Units, or 26,244,724 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 21.72.


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 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

Today's Comet 8P/Tuttle rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 121.2°
Max altitude: 7.4°
Azimuth: 238.8°

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 22 August 2008 00:00 UTC (JD: 2454701.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.81978762
Orbit inclination i 54.98196883°
Perihelion distance q 1.02726309 AU
153,676,372 km
Aphelion distance Q 10.37331963 AU
1,551,826,532 km
Semi-major axis a 5.70029136 AU
852,751,452 km
Orbital period period 13.6099 years
4,971.0028 days
Date of perihelion transit Tp 2008-Jan-27 00:25:56
2,454,492.5180 JD
Next perihelion transit 2021-Sep-06 00:29
2,459,463.5208 JD
Argument of perihelion peri 207.51151750851°
Longitude of the ascending node node 270.34216157066°
Mean anomaly M 15.13447433004°
Mean motion n 0.07242000°/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
2023 Jan 22 17h 57m 51s -31° 19’ 09” 21.71 Scorpius
2023 Jan 23 17h 58m 36s -31° 17’ 52” 21.71 Sagittarius
2023 Jan 24 17h 59m 20s -31° 16’ 35” 21.71 Sagittarius
2023 Jan 25 18h 00m 03s -31° 15’ 17” 21.72 Sagittarius
2023 Jan 26 18h 00m 47s -31° 14’ 00” 21.72 Sagittarius
2023 Jan 27 18h 01m 31s -31° 12’ 43” 21.72 Sagittarius
2023 Jan 28 18h 02m 13s -31° 11’ 27” 21.72 Sagittarius
2023 Jan 29 18h 02m 56s -31° 10’ 10” 21.72 Sagittarius
2023 Jan 30 18h 03m 38s -31° 08’ 54” 21.72 Sagittarius
2023 Jan 31 18h 04m 18s -31° 07’ 39” 21.72 Sagittarius
2023 Feb 01 18h 04m 59s -31° 06’ 23” 21.72 Sagittarius
2023 Feb 02 18h 05m 40s -31° 05’ 07” 21.72 Sagittarius
2023 Feb 03 18h 06m 20s -31° 03’ 51” 21.72 Sagittarius
2023 Feb 04 18h 07m 00s -31° 02’ 36” 21.72 Sagittarius