{"id":44477,"date":"2023-05-04T07:10:02","date_gmt":"2023-05-04T07:10:02","guid":{"rendered":"https:\/\/www.skyatnightmagazine.com\/?p=118413"},"modified":"2023-05-04T07:32:33","modified_gmt":"2023-05-04T07:32:33","slug":"see-jupiter-disappear-behind-the-moon-this-month","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/rss_feed\/see-jupiter-disappear-behind-the-moon-this-month\/","title":{"rendered":"See Jupiter disappear behind the Moon this month"},"content":{"rendered":"

A daytime lunar occultation of Jupiter will see the gas giant appear to pass behind the Moon, but location will be key to observing the event. <\/p>

By Pete Lawrence\n \t\t<\/p>

Published: Thursday, 04 May 2023 at 12:00 am<\/p>

\n\n

Everyone in the UK will be able to enjoy a wonderful interaction between Jupiter and the crescent Moon on 17 May, as the gas giant planet passes close by our natural satellite.<\/p>\n

However, observers in Northern Ireland and the north of Scotland will be treated to something very special indeed: a lunar occultation<\/a> of Jupiter, whereby Jupiter will appear to pass behind the Moon.<\/p>\n

The best time to observe the event will be 17 May from 11:30 BST (10:30 UT) through to 15:30 BST (14:30 UT).<\/p>\n

Read our guide on how to calculate and observe lunar occultations<\/a><\/strong><\/em><\/p>\n

How to see the lunar occultation of Jupiter<\/strong><\/h2>\n
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A lunar occultation of Mars. Credit: Pete Lawrence<\/span><\/figcaption><\/div>\n

Lunar occultations of planets aren\u2019t very common at all.<\/p>\n

If you\u2019ve been following events over the past few months, you might question this statement seeing as there have been three recent lunar occultations of Uranus<\/a> and a lunar occultation of Mars<\/a> visible from the UK.<\/p>\n

However, delve back before the first event, the lunar occultation of Uranus on 14 September 2022, and there weren\u2019t any for several years before that.<\/p>\n

This month there\u2019s a very rare lunar occultation of Jupiter, an event which comes with a couple of catches.<\/p>\n

Jupiter is a morning planet currently, not particularly well-placed and rising just 50 minutes before the Sun, mid-month.<\/p>\n

As it pops up above the east-northeast horizon on the morning of 17 May<\/strong>, it will be accompanied by a slender, but quite visible 7%-lit waning crescent Moon<\/a>.<\/p>\n

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On 17 May, start observing the lunar occultation of Jupiter from 14:20 BST (13:20 UT). The Moon\u2019s altitude will be approximately 35\u00b0 at this time, above the southwest horizon. Credit: Pete Lawrence<\/span><\/figcaption><\/div>\n

From the UK, the Moon will appear 5\u00b0 to the right of mag. \u20131.9 Jupiter. 50 minutes later the Sun will rise and, if the weather is kind, the sky will turn bright blue.<\/p>\n

At this point, you\u2019re probably anticipating the first catch: the occultation occurs during daylight hours from the UK.<\/p>\n

Having said this, it\u2019s still a perfectly feasible observation, although it will lack the spectacle of a nighttime lunar occultation of a bright Jupiter.<\/p>\n

The Moon will be visible to the naked eye given cloud-free skies, but being a relatively thin crescent, it may need a bit of work to find.<\/p>\n

The pair are due south at 47\u00b0 altitude from central regions of the UK at 11:24 BST (10:24 UT) on 17 May.<\/p>\n

This is a good time to try for the Moon using a telescope on a driven equatorial mount<\/a>.<\/p>\n

The Sun is only 27\u00b0 away though, so if you\u2019re using binoculars or the naked eye to locate the Moon, take care and do so in the shadow of a house, fence or some other opaque obstruction that leaves the region to the right of the Sun clear.<\/p>\n

Observing the Sun with the naked eye or \u2013 worse \u2013 through binoculars or a telescope can seriously damage your eyesight. If in doubt, don\u2019t attempt it!<\/p>\n

At 14:30 BST (13:30 UT), Jupiter will appear like a ghostly echo of its nighttime self, close to the Moon\u2019s southern edge.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
Location makes a big difference to what you\u2019ll actually see on 17 May, producing either a close pass between Jupiter and the Moon, a graze or a full occultation. Credit: Pete Lawrence<\/span><\/figcaption><\/div>\n

Now for the second catch: the occultation can only be seen from the north of the UK, mostly from Northern Ireland and Scotland.<\/p>\n

Those living in the fuzzy \u2018graze zone\u2019 may see Jupiter partly occulted by the Moon\u2019s limb, while those further south will witness a near miss.<\/p>\n

Approximate timings for various locations are shown on the map above, observing being recommended from 14:20 BST (13:20 UT) through to 15:20 BST (14:20 UT).<\/p>\n

This guide originally appeared in the May 2023 issue of <\/strong><\/em>BBC Sky at Night Magazine<\/strong>.<\/strong><\/em><\/p> <\/body><\/html>\n

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