Comet 185P/Petriew
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.
High Precision Live Sky Chart
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.
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!
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 Dec 08 | 12h 28m 28s | -11° 51’ 54” | 21.98 | Corvus |
| 2018 Dec 09 | 12h 29m 08s | -11° 57’ 03” | 21.99 | Corvus |
| 2018 Dec 10 | 12h 29m 48s | -12° 02’ 09” | 21.99 | Corvus |
| 2018 Dec 11 | 12h 30m 27s | -12° 07’ 10” | 21.99 | Corvus |
| 2018 Dec 12 | 12h 31m 05s | -12° 12’ 07” | 22.00 | Corvus |
| 2018 Dec 13 | 12h 31m 41s | -12° 17’ 00” | 22.00 | Corvus |
| 2018 Dec 14 | 12h 32m 17s | -12° 21’ 48” | 22.01 | Corvus |
| 2018 Dec 15 | 12h 32m 53s | -12° 26’ 33” | 22.01 | Corvus |
| 2018 Dec 16 | 12h 33m 28s | -12° 31’ 11” | 22.01 | Corvus |
| 2018 Dec 17 | 12h 34m 00s | -12° 35’ 45” | 22.02 | Corvus |
| 2018 Dec 18 | 12h 34m 33s | -12° 40’ 15” | 22.02 | Corvus |
| 2018 Dec 19 | 12h 35m 06s | -12° 44’ 40” | 22.02 | Corvus |
| 2018 Dec 20 | 12h 35m 36s | -12° 49’ 00” | 22.03 | Corvus |
| 2018 Dec 21 | 12h 36m 06s | -12° 53’ 16” | 22.03 | Corvus |
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.
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.
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.