Dominic Ford, Editor
From the Comets feed
Comet 21P/Giacobini-Zinner will make its closest approach to the Sun, at a distance of 1.01 AU.
From Fairfield, it will be visible in the dawn sky, rising at 23:04 (EST) – 7 hours and 26 minutes before the Sun – and reach an altitude of 63° above the eastern horizon before fading from view as dawn breaks at around 05:22.
For more information about its path across the sky, see In-The-Sky.org's ephemeris page for comet 21P/Giacobini-Zinner.
This event was automatically generated on the basis of orbital elements published by the Minor Planet Center (MPC), and is updated daily (last update, 19 Jan 2019).
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
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The exact position of comet 21P/Giacobini-Zinner will be:
The coordinates are given in J2000.0.
|The sky on 10 September 2018|
1 day old
All times shown in EDT.
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.
© Andy Roberts 1997. Pictured comet is C/1995 O1 Hale-Bopp.