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🌎  Observing from: Greenwich, United Kingdom [change]

Comet 80P/Peters-Hartley

Comet 80P/Peters-Hartley is currently in the constellation of Sagittarius. The current Right Ascension of Comet 80P/Peters-Hartley is 18h 54m 08s and the Declination is -19° 41’ 55” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 80P/Peters-Hartley is 18.10 (JPL).

Summary of key facts about Comet 80P/Peters-Hartley [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 54m 08s
-19° 41’ 55”
  • 80P/Peters-Hartley is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-South-East direction at an altitude of 13° above the horizon.
  • Given its current magnitude, 80P/Peters-Hartley is visible only through long exposure photography.
  • See also 80P/Peters-Hartley 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 80P/Peters-Hartley available on TheSkyLive:

Available Resources

Comet 80P/Peters-Hartley Position and Finder Charts

Below we provide Comet 80P/Peters-Hartley 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 80P/Peters-Hartley in Sagittarius on January, 29 2023
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 80P/Peters-Hartley 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 80P/Peters-Hartley is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 18h 54m 08s
Dec: -19° 41’ 55”
Deep sky finder chart for Comet 80P/Peters-Hartley
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 80P/Peters-Hartley?, a page that provides all the information needed to find Comet 80P/Peters-Hartley in the sky and additional links to sky charts.

Comet 80P/Peters-Hartley Distance from Earth

The distance of Comet 80P/Peters-Hartley from Earth is currently 378,210,563 kilometers, equivalent to 2.528181 Astronomical Units. Light takes 21 minutes and 1.5746 seconds to travel from Comet 80P/Peters-Hartley and arrive to us.

21 minutes and 1.5746 seconds

The following chart shows the distance of Comet 80P/Peters-Hartley 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 80P/Peters-Hartley 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 80P/Peters-Hartley from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 80P/Peters-Hartley to Earth

Between January 2013 and December 2100, the closest approach of Comet 80P/Peters-Hartley to Earth happens on Sat Jun 6 2093 at a distance of 0.611427 Astronomical Units, or 91,468,118 kilometers:

Sat Jun 6 2093

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

Comet 80P/Peters-Hartley brightness

The current visual magnitude of Comet 80P/Peters-Hartley is 18.10.


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 80P/Peters-Hartley, 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 80P/Peters-Hartley between January 2013 and December 2100

Comet 80P/Peters-Hartley 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 80P/Peters-Hartley rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 109.7°
Max altitude: 18.8°
Azimuth: 250.4°

The rise and set times are defined as the time at which the upper limb of Comet 80P/Peters-Hartley 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 80P/Peters-Hartley Orbital Elements

The following table lists the orbital elements of Comet 80P/Peters-Hartley at epoch 31 October 2000 00:00 UTC (JD: 2451849.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.59671245
Orbit inclination i 29.87212276°
Perihelion distance q 1.63076532 AU
243,959,020 km
Aphelion distance Q 6.45659224 AU
965,892,454 km
Semi-major axis a 4.04367878 AU
604,925,737 km
Orbital period period 8.1315 years
2,970.0475 days
Date of perihelion transit Tp 1998-Aug-10 20:49:49
2,451,036.3679 JD
Next perihelion transit 2006-Sep-27 21:58
2,454,006.4155 JD
Argument of perihelion peri 338.63940554993°
Longitude of the ascending node node 259.89683052047°
Mean anomaly M 98.559884738467°
Mean motion n 0.12121018°/day

Visualization of Comet 80P/Peters-Hartley Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 80P/Peters-Hartley with respect of the Sun and the orbits of the major planets. The position of Comet 80P/Peters-Hartley 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 80P/Peters-Hartley
View Comet 80P/Peters-Hartley in the 3D Solar System Simulator

Comet 80P/Peters-Hartley 15 Days Ephemeris

The following table lists the ephemerides of Comet 80P/Peters-Hartley computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 80P/Peters-Hartley in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2023 Jan 22 18h 34m 00s -21° 26’ 43” 18.03 Sagittarius
2023 Jan 23 18h 36m 48s -21° 12’ 59” 18.04 Sagittarius
2023 Jan 24 18h 39m 36s -20° 59’ 04” 18.05 Sagittarius
2023 Jan 25 18h 42m 20s -20° 44’ 58” 18.06 Sagittarius
2023 Jan 26 18h 45m 06s -20° 30’ 42” 18.07 Sagittarius
2023 Jan 27 18h 47m 49s -20° 16’ 17” 18.08 Sagittarius
2023 Jan 28 18h 50m 31s -20° 01’ 40” 18.09 Sagittarius
2023 Jan 29 18h 53m 13s -19° 46’ 54” 18.10 Sagittarius
2023 Jan 30 18h 55m 54s -19° 31’ 56” 18.11 Sagittarius
2023 Jan 31 18h 58m 33s -19° 16’ 50” 18.12 Sagittarius
2023 Feb 01 19h 01m 13s -19° 01’ 35” 18.13 Sagittarius
2023 Feb 02 19h 03m 51s -18° 46’ 09” 18.14 Sagittarius
2023 Feb 03 19h 06m 27s -18° 30’ 34” 18.16 Sagittarius
2023 Feb 04 19h 09m 02s -18° 14’ 52” 18.17 Sagittarius