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

C/2017 T1 (Heinze) at perihelion

Wed, 21 Feb 2018 (Tomorrow)

Dominic Ford, Editor
From the Comets feed

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The sky at

Comet C/2017 T1 (Heinze) will make its closest approach to the Sun, at a distance of 0.58 AU.

From Ashburn (click to change) however, it will not be observable – it will reach its highest point in the sky during daytime and will be no higher than 10° above the horizon at dawn.

For more information about its path across the sky, see In-The-Sky.org's ephemeris page for comet C/2017 T1 (Heinze).

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 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
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The path traced across the sky by C/2017 T1 (Heinze)

The exact position of comet C/2017 T1 (Heinze) will be:

Object Right Ascension Declination Constellation Magnitude
Comet C/2017 T1 (Heinze) 21h36m10s +15°37' Pegasus 12.4

The coordinates are given in J2000.0.

The sky on 21 February 2018
Sunrise 06:52
Sunset 17:52
Twilight ends
Twilight begins

6-day old moon
Age of Moon
6 days

All times shown in EST.
Rise Culm. Set
Mercury 07:11 12:38 18:05
Venus 07:26 13:03 18:41
Moon 10:18 16:58 23:37
Mars 02:16 07:01 11:47
Jupiter 00:22 05:26 10:31
Saturn 03:47 08:32 13:17


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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