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Total lunar eclipse and lunar occultation of Uranus on evening of November 8
     A total lunar eclipse together with a lunar occultation of Uranus (Uranus slipping behind the moon), will occur in Hong Kong on the evening of November 8 (Tuesday). If weather permits, the lunar eclipse can be directly observed with unaided eyes at places with an unobstructed view to the east. However, a telescope is indispensable to observe Uranus (see Note).
     The coming lunar eclipse will begin before moonrise. At 6.16pm, the phase of total eclipse will begin with the moon entering the Earth's umbra completely (see figure 1 in Attachment). The phase will last for one hour and 26 minutes and end at 7.42pm. During the period, the moon will not completely vanish but will appear in dull red. This is the result of the blue part of sunlight being scattered by the Earth's atmosphere and the remaining red light refracted onto the moon. The whole process of the lunar eclipse will end at 9.58pm. Details of this lunar eclipse are as follows:
Date Time Phenomenon Elevation Direction (Azimuth)
November 8
4pm Moon enters penumbra Below the horizon Not visible in
Hong Kong
5.08pm Moon enters umbra Below the horizon Not visible in
Hong Kong
5.37pm Moonrise -1 degree East-northeast
(72 degrees)
5.43pm Sunset -1 degree West-southwest
(252 degrees)
6.16pm Total eclipse begins 8 degrees East-northeast
(75 degrees)
6.59pm Maximum eclipse 17 degrees East
(79 degrees)
7.42pm Total eclipse ends 27 degrees East
(82 degrees)
8.49pm Moon leaves umbra 42 degrees East
(87 degrees)
9.58pm Moon leaves penumbra 58 degrees East
(93 degrees)

     On November 8, members of the public can watch the lunar eclipse event via a webcast to be jointly hosted by the Hong Kong Observatory, the Hong Kong Space Museum, the Ho Koon Nature Education cum Astronomical Centre (sponsored by Sik Sik Yuen), the Po Leung Kuk Ngan Po Ling College and the Creative Education Unit of the Hong Kong Federation of Youth Groups.

     For the latest weather situation and the astronomical observation conditions on November 8, please refer to the 9-day weather forecast issued by the Hong Kong Observatory and the Weather Information for Astronomical Observation webpage closer to the time.

     The next lunar eclipse observable in Hong Kong will be a penumbral lunar eclipse on May 5, 2023.

Note: The brightness of Uranus almost reaches the detectable limit of human eye. When the moon is near Uranus, even with a telescope, the bright moonlight will make the faint and tiny Uranus hardly observable. Yet, when a total lunar eclipse occurs, the brightness of the moon drops significantly and the observation of Uranus would be much easier. Details of the coming lunar occultation of Uranus are available at the Hong Kong Space Museum's webpage.
Ends/Wednesday, October 26, 2022
Issued at HKT 15:00
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