According to the 2017 astronomical calendar, December 3 of the solar calendar. At 22:47 (Vietnam time), there will be a phenomenon super moon. The phenomenon will last until the 4th at 3:45 p.m., i.e. the entry of the Moon at perigee, only 357,492 km from Earth, it is also the only Super Moon of 2017. At this time, the Moon will reflect the maximum sunlight, if you look closely you will see that it is 14% larger than normal and about 30% larger in apparent brightness.
What is the Super Moon?
Super Moon (also known as ) big moon is the term used to refer to when the Moon enters the nearest point to Earth in a certain orbit during a good full moon or no moon.
The Moon makes a revolution around the Earth with a period of one lunar month, in each of these cycles the distance from the center of the Moon to the center of the Earth varies from about 357,000 km to 406,000 km, which is a consequence. of the elliptical orbit of the Moon. That is, each month there are times when the Moon approaches the position closest to Earth and then leaves. However, as defined, the specific condition for having a Super Moon is when its perigee position falls on a full or moonless day, i.e. the day the Moon, Earth and Sun are aligned. with each other (not calculated according to the plane of the ecliptic)
The Earth, the Moon and the Sun are aligned, and the Moon enters perigee are two monthly occurrences, each of the Moon’s cycles occurs. However, if the above two things do not happen at the same time, it will not be called a Super Moon, however, based on the observation and calculation of the Moon’s orbit, we can still predict the Super Moon phenomenon. will happen in the future.
Note:
Contrary to news articles and exaggerated images on unreliable websites, a Super Moon is not meant to refer to an image of the Moon that looks so much larger than usual that everyone notices. In fact, only those who pay close attention can see the change from the normal full moon.
(Supermoon’s apparent size is only slightly larger and is hard to notice without paying attention.)
Observe:
Like many other visible astronomical phenomena, they can be observed more easily in places where the weather is favorable. You should choose places with less bright lights, it will be very beneficial for those of you in the mountainous highlands, where there is little air humidity. With the same telescope with the ideal conditions above, we will get the best viewing angle and get many beautiful images of the Super Moon. Wishing astronomy enthusiasts an interesting observing session with this unique 2017 Super Moon phenomenon.
Theo NASA & webspace.com
Truong Xuan Hoang – Hanoi Amateur Astronomy Association AT
