Close approach of the Moon and Collinder 50

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The Moon and Collinder 50 will make a close approach, passing within 1°08' of each other. The Moon will be 3 days old.

From Cambridge , the pair will become visible at around 20:10 (EDT), 24° above your western horizon, as dusk fades to darkness. They will then sink towards the horizon, setting 2 hours and 58 minutes after the Sun at 22:27.

The Moon will be at mag -10.4; and Collinder 50 will be at mag 1.0. Both objects will lie in the constellation Taurus.

They will be too widely separated to fit within the field of view of a telescope, but will be visible to the naked eye or through a pair of binoculars.

A graph of the angular separation between the Moon and Collinder 50 around the time of closest approach is available here.

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

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 04h26m00s 17°06'N Taurus -10.4 32'18"3
Collinder 50 04h27m00s 16°00'N Taurus 1.0 0"0

The coordinates above are given in J2000.0. The pair will be at an angular separation of 39° from the Sun, which is in Aries at this time of year.

The sky on 18 Apr 2018

The sky on 18 April 2018
Sunrise
05:56
Sunset
19:29
Twilight ends
21:12
Twilight begins
04:14


Waxing Crescent

14%

2 days old

Planets
Rise Culm. Set
Mercury 05:12 11:18 17:23
Venus 07:01 14:16 21:31
Moon 07:53 15:08 22:31
Mars 01:41 06:13 10:45
Jupiter 21:13 02:13 07:13
Saturn 01:01 05:37 10:12
All times shown in EDT.

Source

The circumstances of this event were computed using the DE430 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.

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