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🌎  Greenwich, United Kingdom [change]

Comet 185P/Petriew

Comet 185P/Petriew is currently in the constellation of Ophiucus. The current Right Ascension of Comet 185P/Petriew is 16h 27m 33s and the Declination is -16° 32’ 52” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 185P/Petriew is 23.40 (JPL).

Summary of key facts about Comet 185P/Petriew [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]:

16h 27m 33s
-16° 32’ 52”

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Additional information about Comet 185P/Petriew available on TheSkyLive:

Available Resources

Comet 185P/Petriew Position and Finder Charts

Below we provide Comet 185P/Petriew 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 185P/Petriew in Ophiucus on January, 18 2022
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 185P/Petriew in Ophiucus on January, 18 2022
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 185P/Petriew is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 16h 27m 33s
Dec: -16° 32’ 52”
Deep sky finder chart for Comet 185P/Petriew
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 185P/Petriew?, a page that provides all the information needed to find Comet 185P/Petriew in the sky and additional links to sky charts.

Comet 185P/Petriew Distance from Earth

The distance of Comet 185P/Petriew from Earth is currently 752,169,440 kilometers, equivalent to 5.027942 Astronomical Units. Light takes 41 minutes and 48.9672 seconds to travel from Comet 185P/Petriew and arrive to us.

41 minutes and 48.9672 seconds

The following chart shows the distance of Comet 185P/Petriew 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 185P/Petriew 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 185P/Petriew from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 185P/Petriew to Earth

Between January 2013 and December 2100, the closest approach of Comet 185P/Petriew to Earth happens on Tue Nov 7 2056 at a distance of 0.281733 Astronomical Units, or 42,146,695 kilometers:

Tue Nov 7 2056

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

Comet 185P/Petriew brightness

The current visual magnitude of Comet 185P/Petriew is 23.40.


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 185P/Petriew, 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 185P/Petriew between January 2013 and December 2100

Comet 185P/Petriew 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 185P/Petriew rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 106.5°
Max altitude: 22.0°
Azimuth: 253.5°

The rise and set times are defined as the time at which the upper limb of Comet 185P/Petriew 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 185P/Petriew Orbital Elements

The following table lists the orbital elements of Comet 185P/Petriew at epoch 29 June 2013 00:00 UTC (JD: 2456473.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.69933460
Orbit inclination i 14.00710281°
Perihelion distance q 0.93197571 AU
139,421,582 km
Aphelion distance Q 5.26744537 AU
787,998,613 km
Semi-major axis a 3.09971054 AU
463,710,097 km
Orbital period period 5.4575 years
1,993.3343 days
Date of perihelion transit Tp 2012-Aug-13 13:13:58
2,456,153.0514 JD
Next perihelion transit 2018-Jan-27 21:15
2,458,146.3857 JD
Argument of perihelion peri 181.93919392608°
Longitude of the ascending node node 214.09125498944°
Mean anomaly M 57.873637850864°
Mean motion n 0.18060192°/day

Visualization of Comet 185P/Petriew Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 185P/Petriew with respect of the Sun and the orbits of the major planets. The position of Comet 185P/Petriew 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 185P/Petriew
View Comet 185P/Petriew in the 3D Solar System Simulator

Comet 185P/Petriew 15 Days Ephemeris

The following table lists the ephemerides of Comet 185P/Petriew computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 185P/Petriew in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2022 Jan 11 16h 21m 47s -16° 29’ 21” 23.47 Scorpius
2022 Jan 12 16h 22m 36s -16° 29’ 57” 23.46 Scorpius
2022 Jan 13 16h 23m 26s -16° 30’ 33” 23.45 Ophiucus
2022 Jan 14 16h 24m 15s -16° 31’ 05” 23.44 Ophiucus
2022 Jan 15 16h 25m 04s -16° 31’ 36” 23.43 Ophiucus
2022 Jan 16 16h 25m 53s -16° 32’ 03” 23.42 Ophiucus
2022 Jan 17 16h 26m 40s -16° 32’ 26” 23.41 Ophiucus
2022 Jan 18 16h 27m 29s -16° 32’ 48” 23.40 Ophiucus
2022 Jan 19 16h 28m 17s -16° 33’ 07” 23.39 Ophiucus
2022 Jan 20 16h 29m 03s -16° 33’ 24” 23.38 Ophiucus
2022 Jan 21 16h 29m 50s -16° 33’ 38” 23.37 Ophiucus
2022 Jan 22 16h 30m 38s -16° 33’ 47” 23.36 Ophiucus
2022 Jan 23 16h 31m 23s -16° 33’ 56” 23.35 Ophiucus
2022 Jan 24 16h 32m 09s -16° 34’ 00” 23.34 Ophiucus