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What is lunar eclipse and how does it occur?

Lunar Eclipse takes place when Earth comes in between the Moon and the Sun. It is also known as Chandra Grahan. On 16 and 17 July, 2019 partial lunar eclipse will take place and it will be visible in various parts of the world including India. On 21 January, 2019 last lunar eclipse took place and next lunar eclipse will be visible on 26 May, 2021. Do you know what is partial lunar eclipse, types of lunar eclipse and how does it occur? Let us find out!    
Jul 16, 2019 19:23 IST
Lunar Eclipse and its types

Partial Lunar Eclipse will be visible on 16 and 17 July, 2019 in most of the parts of Asia, Europe, Africa, Australia and South America. Do you know that after 149 years, the Lunar Eclipse or Chandra Grahan will coincide with Guru Purnima on 16 July, 2019?

What is Lunar Eclipse?

As we know that the moon does not have its own light it shines because its surface reflects the rays of the Sun. A lunar eclipse occur when Earth comes in between the Sun and the Moon. As a result it blocks the rays of the Sun directly reaching the Moon. It happens at Full Moon.

Types of Lunar Eclipse?       

There are three types of Lunar eclipse: Total Lunar Eclipse, Partial Lunar Eclipse and Penumbral Lunar Eclipse.

Total Lunar Eclipse: It occurs when the entire moon passes through the Earth's umbra shadow. At this time moon will be in deep orange colour.

Partial Lunar Eclipse: It occurs when a portion of the Moon passes through Earth's umbral shadow. It depends upon the size of the eclipse that it will be dark red or rust colour, or simply a charcoal grey may also appear on the shadowed portion of the lunar surface. Also, this type of visual effect can be seen during the partial phases before and after a total lunar eclipse.

Penumbral Lunar Eclipse: It occurs when the Moon passes through earth's penumbral shadow. In this type of eclipse, none of the lunar surface is completely shaded by Earth's umbra. Instead, the slightest dim near the lunar limb closest to the umbra can be seen. When at least half of the Moon enters the penumbra, then we can see the penumbral lunar eclipse.

What is Super Blue Blood Moon?

Let us tell you that during a penumbral eclipse, an astronaut on the surface of the Moon would see a partial solar eclipse, with the Earth blocking a portion of the Sun's disk. During total and partial lunar eclipses, the astronaut will see the total solar eclipses, with the Earth masking the entire Sun which includes corona at maximum.

What are the stages of Partial Lunar Eclipse?

It is not necessary that partial lunar eclipse happen at every Full Moon night because of the inclination of the Moon's orbital plane. The orbital plane of the Moon around the Earth is inclined at an angle of 5 degree to the Earth's orbital plane that is elliptic around the Sun. The points where the two orbital planes meet are known as lunar nodes. So, lunar eclipses occur when the Moon is near a node at Full Moon.

- Penumbral eclipse begins: The penumbra of the Earth starts covering the surface of the Moon.

- Partial Eclipse begins: The umbra part of the Earths starts moving over the Moon.

- Maximum Eclipse: The umbra of the Earth covers the largest part of the Moon.

- Partial Eclipse ends: The umbra of the Earth now no longer covers the Moon.

- Penumbral eclipse ends: The Earth now no longer cast a shadow on the Moon. This condition is the end of the eclipse.

Partial Lunar Eclipse 16 and 17 July, 2019: Time and Duration

Partial Lunar Eclipse will be visible on 16 and 17 July in some parts of the world and it will be the last lunar eclipse (partial or global) of 2019. On 17 July, 2019, the Moon will enter the penumbra at 12:13 am IST and will enter the umbra region at 1:31 am IST. At 3 am India time, the intensity of the partial lunar eclipse will be highest. This is the time when the largest chunk of the Moon will be covered by shadow of the Earth and will appear dark. At 4:29 am IST, the Moon will leave the umbra region which will mark the end of the partial lunar eclipse. The Moon will exit the penumbra region at 5:47 am IST as per NASA. The duration of the eclipse will be 2 hours, 57 minutes and 56 seconds.

According to the NASA's data, partial lunar eclipse of 17 July, the magnitude of the penumbral will be 1.7037 and the umbral will be 0.653.

How to watch Partial Lunar Eclipse?

It is easy to watch with naked eyes. Generally, you can see lunar eclipse without wearing any sort of protective glasses.

Do you know about upcoming 5 Partial Lunar Eclipses?

Date

Eclipse

Places where it will be visible

16-17 July, 2019

Partial Lunar Eclipse

Parts of Europe, parts of Asia, Australia, Africa, South/East North America, South America, Pacific, Atlantic, Indian Ocean, Antarctica

18-19 November, 2021

Partial Lunar Eclipse

Parts of Europe, parts of Asia, Australia, North/West Africa, North America, South America, Pacific, Atlantic, Indian Ocean, Arctic

28-29 October, 2023

Partial Lunar Eclipse

Europe, Asia, Australia, Africa, North America, North/East South America, Pacific, Atlantic, Indian Ocean, Arctic, Antarctica

17-18 September, 2024

Partial Lunar Eclipse

Europe, South/West Asia, Australia, Africa, North America, North/East South America, Pacific, Atlantic, Indian Ocean, Arctic, Antarctica

27-28 August 2026

Partial Lunar Eclipse

Parts of Europe, South/West Asia, Africa, Much of North America, South America, Pacific, Atlantic, Indian Ocean, Antarctica

 

So, now you may have come to know about Lunar Eclipse, its types, how does it occur and also about upcoming partial lunar eclipses.

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