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C/2017 E4 (Lovejoy) reaches its brightest

Dominic Ford, Editor
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The sky at

Comet C/2017 E4 (Lovejoy) is forecast to reach its brightest. It will lie at a distance of 0.53 AU from the Sun, and at a distance of 0.86 AU from the Earth.

From Fairfield however, it will not be observable – it will reach its highest point in the sky during daytime and will be no higher than 18° above the horizon at dawn.

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Based on the absolute magnitude published for this comet by the British Astronomical Association's Comet Section, we estimate that it may reach a peak brightness of around mag 7.

This comet is not expected to be visible to the naked eye, but might be visible through bird-watching binoculars. The brightnesses of comets are often highly unpredictable, since it is impossible to predict with certainty how they will respond as they are heated by the Sun as they move into the inner solar system. Magnitude estimates should be assumed to be highly provisional more than a few weeks in advance.

The path of the comet, on the other hand, can reliably be predicted. The chart below shows the path of C/2017 E4 (Lovejoy) over the course of its apparition. It was produced using StarCharter and is available for download, either on dark background, in PNG, PDF or SVG formats, or on a light background, in PNG, PDF or SVG formats.

Alternatively, you can create a textual listing of the comet's position using In-The-Sky.org's ephemeris generator.

The position of comet C/2017 E4 (Lovejoy) at its brightest will be:

Object Right Ascension Declination Constellation Magnitude
Comet C/2017 E4 (Lovejoy) 00h07m30s +35°01' Andromeda 7.2

The coordinates are given in J2000.0.

The sky on 15 April 2017
Sunrise
06:12
Sunset
19:31
Twilight ends
21:10
Twilight begins
04:33

18-day old moon
Waning Gibbous

82%

18 days old

Planets
Rise Culm. Set
Mercury 06:18 13:16 20:13
Venus 04:45 10:58 17:10
Moon 23:47 03:56 08:58
Mars 07:33 14:50 22:06
Jupiter 18:35 00:24 06:08
Saturn 00:26 05:07 09:47
All times shown in EDT.

Source

This event was automatically generated on the basis of orbital elements published by the Minor Planet Center (MPC) , and is updated whenever new elements become available. It was last updated on 22 Oct 2019.

Image credit

None available.

Fairfield

Latitude:
Longitude:
Timezone:

41.14°N
73.26°W
EDT

Color scheme