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public LocationGreenwich, UK
Sunrise: 4:58 
Transit: 13:04 
Sunset: 21:09
sunny   (Daytime)   What's Visible Now?
Comets » 

Comet 185P/Petriew

Above the horizon.  Rise: 10:44 | Tran: 16:35 | Set: 22:26
Altitude: 17.3°   Azimuth: 244.1°   Direction: West-South-West

Comet 185P/Petriew is in the constellation of Leo, at a distance of 617,020,324 kilometers from Earth. The current Right Ascension is 11h 05m 00s and the Declination is -01° 34’ 28” (apparent coordinates). The predicted magnitude of Comet 185P/Petriew is 22.12 (data provided by JPL Horizons).

Finder chart of 185P/Petriew in Leo on July,13 2024
Map showing Comet 185P/Petriew in Leo on July, 13 2024. Field of view: 50x30 degrees
View interactive star map

Celestial Coordinates


11h 05m 00s
-01° 34’ 28”
03h 56m 52s


11h 03m 44s
-01° 26’ 31”

Additional Information


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 185P/Petriew from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 91.4°
Max altitude: 37.1°
Azimuth: 268.6°
  • 185P/Petriew is above the horizon from Greenwich, UK.
  • Right now it is placed in the West-South-West direction at an altitude of 17° above the horizon.
  • Given its current magnitude, 185P/Petriew 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.

Finder Charts

Finder chart of 185P/Petriew
Sky map showing Comet 185P/Petriew in Leo on July, 13 2024. Field of view: 10x6 degrees. View in interactive sky chart

High 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: 11h 03m 44s
Dec: -01° 26’ 31”
Deep sky finder chart for Comet 185P/Petriew. Field of view: 60x40 arcmins. View in deep sky object tracker

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.

Distance from Earth

The distance of Comet 185P/Petriew from Earth is currently 617,020,324 kilometers, equivalent to 4.124526 Astronomical Units. Light takes 34 minutes and 18.1583 seconds to travel from Comet 185P/Petriew and arrive to us.

34 minutes and 18.1583 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.

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

Closest Approach

Between 1 January 2013 and 30 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 42,146,691 kilometers:

Tue Nov 7 2056

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 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.

Chart of the magnitude of Comet 185P/Petriew as a function of time

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

Orbit Visualization

Orbit Diagram of Comet 185P/Petriew
View Comet 185P/Petriew in the 3D Solar System Simulator

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. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2024 Jul 06 10h 58m 06s -01° 10’ 23” 21.98 Leo
2024 Jul 07 10h 58m 58s -01° 13’ 14” 22.00 Leo
2024 Jul 08 10h 59m 50s -01° 16’ 11” 22.02 Leo
2024 Jul 09 11h 00m 43s -01° 19’ 10” 22.03 Leo
2024 Jul 10 11h 01m 36s -01° 22’ 14” 22.05 Leo
2024 Jul 11 11h 02m 29s -01° 25’ 21” 22.07 Leo
2024 Jul 12 11h 03m 22s -01° 28’ 33” 22.08 Leo
2024 Jul 13 11h 04m 16s -01° 31’ 47” 22.10 Leo
2024 Jul 14 11h 05m 10s -01° 35’ 06” 22.12 Leo
2024 Jul 15 11h 06m 04s -01° 38’ 28” 22.13 Leo
2024 Jul 16 11h 06m 58s -01° 41’ 53” 22.15 Leo
2024 Jul 17 11h 07m 52s -01° 45’ 22” 22.16 Leo
2024 Jul 18 11h 08m 47s -01° 48’ 54” 22.18 Leo
2024 Jul 19 11h 09m 42s -01° 52’ 30” 22.19 Leo

Additional Resources