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Comet 185P/Petriew

Available Resources

Comet 185P/Petriew Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 185P/Petriew is now with respect to the brightest stars and constellations.

More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Comet 185P/Petriew in Virgo on October, 17 2018
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
11h 39m 38s
-06° 13’ 36”

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 behvior 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.

Comet 185P/Petriew Rise and Set Times

Today's Comet 185P/Petriew rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 96.2°
Max altitude: 32.3°
Azimuth: 263.7°

Comet 185P/Petriew Orbit Diagram

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 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
2018 Oct 10 11h 30m 42s -05° 16’ 24” 21.50 Leo
2018 Oct 11 11h 31m 55s -05° 24’ 10” 21.51 Leo
2018 Oct 12 11h 33m 09s -05° 31’ 54” 21.52 Leo
2018 Oct 13 11h 34m 20s -05° 39’ 37” 21.53 Leo
2018 Oct 14 11h 35m 32s -05° 47’ 17” 21.55 Leo
2018 Oct 15 11h 36m 45s -05° 54’ 56” 21.56 Leo
2018 Oct 16 11h 37m 55s -06° 02’ 35” 21.57 Virgo
2018 Oct 17 11h 39m 06s -06° 10’ 10” 21.58 Virgo
2018 Oct 18 11h 40m 17s -06° 17’ 44” 21.59 Virgo
2018 Oct 19 11h 41m 26s -06° 25’ 18” 21.60 Virgo
2018 Oct 20 11h 42m 36s -06° 32’ 48” 21.61 Virgo
2018 Oct 21 11h 43m 45s -06° 40’ 18” 21.63 Virgo
2018 Oct 22 11h 44m 53s -06° 47’ 45” 21.64 Crater
2018 Oct 23 11h 46m 01s -06° 55’ 11” 21.65 Crater

Distance of Comet 185P/Petriew from Earth

The following chart shows the distance of Comet 185P/Petriew from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.

The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 185P/Petriew is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 185P/Petriew from Earth between January 2013 and December 2075

Light Curve of Comet 185P/Petriew

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 2075

Comet 185P/Petriew Orbital Elements

The following table lists the orbital elements of Comet 185P/Petriew at epoch 12 May 2013 00:00 UTC (JD: 2456425.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.69936106
Orbit inclination i 14.00740133°
Perihelion distance q 0.93190207 AU
139,410,565 km
Aphelion distance Q 5.26757482 AU
788,017,979 km
Semi-major axis a 3.09973845 AU
463,714,272 km
Orbital period period 5.4600 years
1,993.3612 days
Date of perihelion transit Tp 2012-Aug-13 13:27:50
2,456,153.0610 JD
Next perihelion transit 2018-Jan-27 22:07
2,458,146.4222 JD
Argument of perihelion peri 181.93885337186°
Longitude of the ascending node node 214.09015530137°
Mean anomaly M 49.202340903308°
Mean motion n 0.18059948°/day
Closest approach to Earth* 2056-Nov-07
Distance of closest approach* 0.28173602 AU
42,147,108 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.