© Andy Roberts 1997. Pictured comet is C/1995 O1 Hale-Bopp.

185P/Petriew reaches its brightest

Wed, 31 Jan 2018 (17 days ago)

Dominic Ford, Editor
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Comet 185P/Petriew is forecast to reach its brightest, at around mag 10.8. It will lie at a distance of 0.93 AU from the Sun, and at a distance of 1.36 AU from the Earth.

From Ashburn (click to change), it will become visible at around 18:30 (EST) as the dusk sky fades, 26° above your south-western horizon. It will then sink towards the horizon, setting 3 hours and 34 minutes after the Sun at 20:57.

For more information about its path across the sky, see In-The-Sky.org's ephemeris page for comet 185P/Petriew.

This event was automatically generated on the basis of orbital elements published by the Minor Planet Center (MPC), and is updated daily (last update, 17 Feb 2018).

Note that the future positions of comets are typically known with a high degree of confidence, but their brightnesses are often much more unpredictable, since it is impossible to predict with certainty how they will respond as they move closer to the Sun. Magnitude estimates should be assumed to be highly provisional more than a few weeks in advance.

Printable finder charts
Light-on-dark PNG image PDF document
Dark-on-light PNG image PDF document
The path traced across the sky by 185P/Petriew

The exact position of comet 185P/Petriew will be:

Object Right Ascension Declination Constellation Magnitude
Comet 185P/Petriew 23h39m20s -03°25' Aquarius 10.8

The coordinates are given in J2000.0.

The sky on 31 January 2018
Sunrise 07:16
Sunset 17:28
Twilight ends
Twilight begins

14-day old moon
Age of Moon
14 days

All times shown in EST.
Rise Culm. Set
Mercury 06:49 11:36 16:24
Venus 07:40 12:45 17:50
Moon 18:07 00:01 07:06
Mars 02:36 07:30 12:25
Jupiter 01:36 06:42 11:48
Saturn 05:01 09:46 14:31


The circumstances of this event were computed using the DE405 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).

This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.

Image credit

© Andy Roberts 1997. Pictured comet is C/1995 O1 Hale-Bopp.




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