The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Close approach of Mercury and M44

Dominic Ford, Editor
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The sky at

Mercury and M44 will make a close approach, passing within 0°22' of each other.

From Cambridge however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 9° above the horizon at dusk.

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Mercury will be at mag 0.0, and M44 at mag 3.1, both in the constellation Cancer.

The pair will be close enough to fit within the field of view of a telescope, but will also be visible to the naked eye or through a pair of binoculars.

A graph of the angular separation between Mercury and M44 around the time of closest approach is available here.

The positions of the two objects at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
Mercury 08h39m40s +19°19' Cancer 0.0 6"9
M44 08h40m20s +19°40' Cancer 3.1 94'59"9

The coordinates above are given in J2000.0. The pair will be at an angular separation of 25° from the Sun, which is in Gemini at this time of year.

The sky on 04 July 2018
Sunrise
05:11
Sunset
20:23
Twilight ends
22:35
Twilight begins
02:59

21-day old moon
Waning Gibbous

67%

21 days old

Planets
Rise Culm. Set
Mercury 07:16 14:34 21:52
Venus 08:39 15:40 22:40
Moon 23:47 05:22 10:58
Mars 22:10 02:45 07:17
Jupiter 15:28 20:36 01:48
Saturn 19:38 00:18 04:52
All times shown in EDT.

Source

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

The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EDT

Color scheme