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HomeAstrophotographyMorning Occultation Of Uranus (WA, NT and FNQ, Saturday 25 June, 2022)

Morning Occultation Of Uranus (WA, NT and FNQ, Saturday 25 June, 2022)

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Morning sky on Saturday June 25 as seen from Mt.Isa at 6:22 am AEST just before Uranus disappears behind the bright limb of the Moon. The inset shows the binocular
appearance of the Moon and Uranus at this time.
Morning sky on Saturday June 25 as seen
from Alice Springs at 5:43 am ACST just before Uranus disappears behind the
bright limb of the Moon. The inset shows the binocular
appearance of the Moon and Uranus at this time.
Morning sky on Saturday June 25 as seen
from Perth at 4:48 am AWST just after Uranus reappears behind the dark limb of the Moon. The inset shows the binocular
appearance of the Moon and Uranus at this time.

Path of the occultation of Uranus 25 June 2022 (24 Jan UT). (cyan=occultation at moonrise/moonset; red dotted=daytime occultation;
blue=twilight occultation; white=nighttime occultation). Source IOTA.

On the morning of Saturday June 25 the Moon and and Uranus are very close and an occultation is seen in Western Australia, Northern Territory and Far North Queensland. 

Times for selected cities in these areas are given in the table below, time will be similar for nearby locations. Times in UT for other Australian cities can be found in the tables at the IOTA site. 

Town Nautical twilight Civil twilight Disappearance Bright Limb Reappearance Dark Limb Height
Alice Springs (ACST) 6:24 6:52 5:45 6:29 23
Darwin (ACST) 6:17 6:44 5:37 6:51 24
Cairns (AEST) 5:55 6:22 6:05 7:04 40
Mt Isa (AEST) 6:26 6:54 6:23 7:05 30
Perth (AWST) 6:20 6:50 just above horizon 4:06 4:48 16

The northern Territory and northern Western Australia have the best views,  in Far North Queensland Uranus emerges from behind the Moon in daylight, and will be very hard to see. In Perth and Fremantle the Moon is just 3° form the horizon at disappearance, so a very difficult target. 

While Uranus is bright enough to be visible under dark sky condition to the unaided eye,the combination of moonlight and advancing twilight means that binoculars or a small telescope are needed to see Uranus. 

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