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Comets » 

Comet 80P/Peters-Hartley

Above the horizon.  Rise: 23:56 | Tran: 9:49 | Set: 19:39
Alt: 1.79°   Az: 30.48°   Direction: North-North-East

Comet 80P/Peters-Hartley is in the constellation of Triangulum, at a distance of 966,565,641.0 kilometers from Earth. The current Right Ascension is 02h 37m 27s and the Declination is +34° 07’ 04” (apparent coordinates). The predicted magnitude of Comet 80P/Peters-Hartley is 27.83 (data provided by JPL Horizons).

Finder Charts

Map showing Comet 80P/Peters-Hartley in Triangulum on June, 18 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet 80P/Peters-Hartley in Triangulum on June, 18 2025. Field of view: 15x9 degrees. View in interactive sky chart

High 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.

80P/Peters-Hartley
RA: 02h 35m 54s
Dec: +34° 00’ 28”
Deep sky finder chart for Comet 80P/Peters-Hartley. Field of view: 60x40 arcmins. View in deep sky object tracker

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.

Celestial Coordinates

Apparent

02h 37m 27s
+34° 07’ 04”
14h 31m 04s
17h 08m 32s

J2000

02h 35m 54s
+34° 00’ 28”

Additional Information

Triangulum
n/a
n/a
n/a
n/a
27.83

The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.

Rise and Set Times

Today's rise, transit and set times of Comet 80P/Peters-Hartley from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 55.9°
Max altitude: 72.6°
Azimuth: 304.1°
  • 80P/Peters-Hartley is above the horizon from Greenwich, UK.
  • Right now it is placed in the North-North-East direction at an altitude of 1.79° above the horizon.
  • Given its current magnitude, 80P/Peters-Hartley is visible only through long exposure photography.
  • 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.

Distance from Earth

The distance of Comet 80P/Peters-Hartley from Earth is currently 966,565,641.0 kilometers, equivalent to 6.4610922367 Astronomical Units. Light takes 53m 44.116s to travel from Comet 80P/Peters-Hartley and arrive to us.

966,565,641.0
6.4610922367
53m 44.116s

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.

Chart of the distance of Comet 80P/Peters-Hartley from Earth in Astronomical Units (au)

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

Between 1 January 2000 and 31 December 2099, the closest approach of Comet 80P/Peters-Hartley to Earth happens on Sat Jun 6 2093 at a distance of 0.614406 Astronomical Units, or 91,913,851 kilometers:

Sat Jun 6 2093
91,913,851
0.614406

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

Light Curve

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.

Chart of the magnitude of Comet 80P/Peters-Hartley as a function of time

Orbital Elements

The following table lists the orbital elements of Comet 80P/Peters-Hartley at epoch 12 April 2017 00:00 UTC (JD: 2457856.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.59940950
Orbit inclination i 29.93110501°
Perihelion distance q 1.61176276 AU
241,116,278 km
Aphelion distance Q 6.43517186 AU
962,688,010 km
Semi-major axis a 4.02346731 AU
601,902,144 km
Orbital period period 8.0707 years
2,947.8077 days
Date of perihelion transit Tp 2014-Nov-10 06:46:41
2,456,971.7824 JD
Next perihelion transit 2022-Dec-06 02:09
2,459,919.5901 JD
Argument of perihelion peri 339.16560416497°
Longitude of the ascending node node 259.84435125517°
Mean anomaly M 108.04583074418°
Mean motion n 0.12212466°/day
2h1>Orbit Visualization
Orbit Diagram of Comet 80P/Peters-Hartley
View Comet 80P/Peters-Hartley in the 3D Solar System Simulator

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. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2025 Jun 11 02h 31m 57s +33° 38’ 01” 27.83 Triangulum
2025 Jun 12 02h 32m 39s +33° 41’ 40” 27.83 Triangulum
2025 Jun 13 02h 33m 21s +33° 45’ 19” 27.83 Triangulum
2025 Jun 14 02h 34m 03s +33° 48’ 58” 27.83 Triangulum
2025 Jun 15 02h 34m 45s +33° 52’ 37” 27.83 Triangulum
2025 Jun 16 02h 35m 26s +33° 56’ 15” 27.83 Triangulum
2025 Jun 17 02h 36m 07s +33° 59’ 54” 27.83 Triangulum
2025 Jun 18 02h 36m 48s +34° 03’ 32” 27.83 Triangulum
2025 Jun 19 02h 37m 28s +34° 07’ 10” 27.83 Triangulum
2025 Jun 20 02h 38m 08s +34° 10’ 48” 27.83 Triangulum
2025 Jun 21 02h 38m 49s +34° 14’ 26” 27.83 Triangulum
2025 Jun 22 02h 39m 28s +34° 18’ 03” 27.84 Triangulum
2025 Jun 23 02h 40m 07s +34° 21’ 41” 27.84 Triangulum
2025 Jun 24 02h 40m 46s +34° 25’ 17” 27.84 Triangulum

Additional Resources on TheSkyLive