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public  Dengnan, China Dengnan, China  ⓘ
TimezoneAsia/Shanghai
Sunrise: 5:28 
Transit: 12:28 
Sunset: 19:28
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Comets » 

Comet 80P/Peters-Hartley

Below the horizon.  Rise: 0:43 | Tran: 8:21 | Set: 15:56
Alt: -23.68°   Az: 349.29°   Direction: North

Comet 80P/Peters-Hartley is in the constellation of Perseus, at a distance of 946,638,994.0 kilometers from Earth. The current Right Ascension is 02h 47m 05s and the Declination is +35° 02’ 48” (apparent coordinates). The estimated magnitude of comet 80P/Peters-Hartley, computed using JPL Horizons's data, is 27.83).

Finder Charts

The sky charts below show, at different resolutions, the position of comet 80P/Peters-Hartley in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of comet 80P/Peters-Hartley in the constellation of Perseus on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of comet 80P/Peters-Hartley in the constellation of Perseus on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of comet 80P/Peters-Hartley against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

80P/Peters-Hartley
RA: 02h 45m 31s
Dec: +34° 56’ 25”
Simplified high-resolution deep sky chart showing the current position of comet 80P/Peters-Hartley. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

02h 47m 05s
+35° 02’ 48”
11h 12m 00s
13h 59m 06s

J2000

02h 45m 31s
+34° 56’ 25”

Additional Information

Perseus
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

The following table lists today's rise, transit and set times of comet 80P/Peters-Hartley from Dengnan, China (all times relative to the local timezone Asia/Shanghai):

Azimuth: 54.9°
Max altitude: 85.3°
Azimuth: 305.0°

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 946,638,994.0 kilometers, equivalent to 6.3278908287 Astronomical Units. Light takes 52m 37.648s to travel from comet 80P/Peters-Hartley and arrive to us.

946,638,994.0
6.3278908287
52m 37.648s

The following graph shows the distance of comet 80P/Peters-Hartley from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of comet 80P/Peters-Hartley from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

The value of the distance of 80P/Peters-Hartley from Earth is also available as a real time updated value in the live position tracker.

Closest Approach to Earth

In the period between January 1, 2000 and December 31, 2099, the closest approach of comet 80P/Peters-Hartley to Earth will happen on Saturday 6 June 2093 at a distance of 0.614406 Astronomical Units, or 91,913,851 kilometers:

Saturday 6 June 2093
91,913,851
0.614406

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

Light Curve

The following chart shows the light curve of comet 80P/Peters-Hartley, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

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 April, 12 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 November 10, 2014
2,456,971.7824 JD
Next perihelion transit December 6, 2022
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

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of comet 80P/Peters-Hartley relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

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
Jun 27 2025 02h 42m 39s +34° 36’ 07” 27.84 Triangulum
Jun 28 2025 02h 43m 16s +34° 39’ 43” 27.84 Perseus
Jun 29 2025 02h 43m 52s +34° 43’ 17” 27.84 Perseus
Jun 30 2025 02h 44m 28s +34° 46’ 53” 27.84 Perseus
Jul 01 2025 02h 45m 04s +34° 50’ 27” 27.83 Perseus
Jul 02 2025 02h 45m 40s +34° 54’ 00” 27.83 Perseus
Jul 03 2025 02h 46m 15s +34° 57’ 33” 27.83 Perseus
Jul 04 2025 02h 46m 49s +35° 01’ 06” 27.83 Perseus
Jul 05 2025 02h 47m 23s +35° 04’ 37” 27.83 Perseus
Jul 06 2025 02h 47m 56s +35° 08’ 09” 27.83 Perseus
Jul 07 2025 02h 48m 29s +35° 11’ 40” 27.83 Perseus
Jul 08 2025 02h 49m 01s +35° 15’ 10” 27.83 Perseus
Jul 09 2025 02h 49m 33s +35° 18’ 39” 27.83 Perseus
Jul 10 2025 02h 50m 05s +35° 22’ 07” 27.83 Perseus

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