February 24th.
The Lantern Festival on the fifteenth day of the first lunar month.
It's another year of moon viewing.
Introduction by science popularization experts of the Observatory.
The full moon of this year's Lantern Festival has "three coincidences".
One is that the full moon occurs on the day of the Lantern Festival.
The second is that it coincides with the smallest full moon of the year.
The third is that the full moon is just after dinner.
It's time for the family to enjoy the moon.
Coincidentally, the full moon festival is full of arms.
When the Moon and Sun are on opposite sides of the Earth.
and when the ecliptic longitude of the Moon and the Sun differ by 180 degrees.
View from Earth.
The side of the Moon towards the Earth is fully illuminated.
The Moon is at its roundest at this time.
Call it a "full moon".
Also known as "hope".
Lunar monthly.
Ten. IV.XV.
Sixteen or even seventeen.
A full moon is possible.
Xiu Lipeng, an expert in astronomical science popularization, said.
Due to the 'hope' in the first month of the year of the dragon in Jiachen
Appeared at 20:30 on February 24.
Therefore. The Lantern Festival in the Year of the Dragon is 'the fifteenth round of the moon and the fifteenth round'. ”
The second coincidence, the smallest full moon, the greatest missing.
Coincidentally. This round of Lantern Festival Moon is also the "smallest full moon" this year
Xiu Lipeng introduced.
The moon itself does not emit light.
The moonlight we see.
Sunlight reflected from the Moon.
The Moon revolves around the Earth in an elliptical orbit.
The distance between the Moon and the Earth is not constant.
Due to the distance is not the same.
The moon in our eyes.
There is also a difference between size and size.
If it's on a full moon.
The Moon appears exactly near the apogee.
At this point, the Full Moon will look a little smaller.
Contrarily. If the Moon happens to appear near perigee.
The Full Moon will look a little bigger.
In a Gregorian calendar year.
There will usually be 12 or 13 Full Moons.
This Full Moon on February 24.
It is one of the full moon days of all the year.
The one closest to the apogee.
Therefore, it is the "smallest full moon" of the year
And this year's "biggest full moon".
It appears on October 17 (the fifteenth day of the ninth month of the lunar calendar).
Everyone who has a heart.
You can take pictures of this "small and big".
Compare and see how much worse.
It doesn't matter if it's the smallest full moon or the largest full moon.
It occurs almost every 13 months.
So it's not uncommon.
However, it is rare for the Lantern Festival to meet the smallest full moon.
This will only happen twice in a lifetime.
Last appeared.
Lantern Festival + the smallest full moon of the year".
It was again on February 19, 1962.
The next time is February 28, 2086.
This year's Lantern Festival, once the "smallest full moon" is missed.
It's going to be another 62 years.
It is indeed worth cherishing.
It's time for the three families to enjoy the moon.
How to enjoy this Lantern Festival in the Year of the Dragon?
Xiu Lipeng suggested.
Within two hours after sunset.
It is best to enjoy the moon around midnight.
This is because the moon has just risen shortly after sunset.
It appears large and round.
It's not just for the naked eye.
It's also great for taking photos with ground views.
Around midnight. The full moon 'walks' to the vicinity of the zenith.
It will form a beautiful scenery of 'bright moon headspace'.
At this time, the horizon of the moon reached its highest level of the night.
The atmosphere through which the moonlight passes is thin.
Therefore, the moon looks crystal clear. ”
Tonight. Let's enjoy the moon together.
CCTV).