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Astronomy calendar 2021

JANUARY

1) January 2 – Earth at perihelion. The Earth will reach it’s closest point to the sun.

2) January 4 – Quadrantid meteor shower. One of the simplest annual meteor showers peaking at up to 120 meteors per hour.

3) January 10 – Triple conjuction Jupiter Saturn & Mercury will appear close to each other in the evening sky.

4) January 13 – First new moon of 2021 А chance to observe faint Star dusters and galaxies.

5) January 24 – a) Saturn at solar conjunction Saturn will pass on the brink of the sun and can be unobservable for weeks to return . b) Mercury at greatest eastern elongation.

6) January 29 – a)Jupiter at solar conjunction. After Saturn, Jupiter will pass on the brink of the sun and can be unobservable for weeks to return . b) Full moon of 2021. The January full moon is also known as the wolf moon.

FEBRUARY

1) February 8 – α­ centaurid meteor shower. The only meteor shower in Feb up to 8 meteors per hour.

2) February 9 – The United Arab Emirates Hope spacecraft will orbit Mars.

3) February 18 – NASA Perseverance Mars landing (Jezero Crater).

4) February 10 – China Tianwen­1 Mars landing (Utopia Planitia)

5) February 28 – Mercury at highest point. Mercury will reach it’s highest point in the morning sky in capricornus.

March

1) March 1 – OSIRIS­REx sample departure from asteroid Bennu.

2) February 6 – Mercury at greatest western elongation.

3) March 11 – Neptune at solar conjunction. The windy planet will pass on the brink of the Sun and can be unobservable for weeks to return .

4) March 14 – γ­ Normid meteor shower. The shower will peak close to the new moon up to 6 meteors per hour.

5) March 20 – Spring Equinox. Equal day & night on Earth. The sun will shine directly over the equator.

6) March 28 – Super worm moon . The first super moon of 2021. The moon will appear slightly bigger & brighter than average.

7) March 29 – Venus at it’s brightest. A great chance to see the planet in the evening sky.

APRIL

1) April 17 – Lunar occultation of mars. Mars will disappear behind the moon for the primary time in 2021.

2) April 22 – Lyrid meteor shower. It will produce its best displays before down up to 18 meteors per hour.

3) April 27 – Super pink moon. The second supermoon of 2021 the april is also called the pink moon.

MAY

1) May 6 – η – Aquarid meteor shower. Fireballs from Halley’s comet up to 40 meteors per hour.

2) May 11 – New moon phase

3) May 17 – Mercury at greatest eestern elongation.

4) May 26 – Total lunar eclipse. Visible from Oceania, the Americas and Eastern southeast Asia.

5) May 26 – Super flower moon. The third supermoon of 2021 also known as the flower moon.

6) May 29 – Venus and Mercury. Venus and mercury will pass within 0°24′ of each other.

JUNE

1) June 1 – Astrobotic may launch its first moon lander for NASA.

2) June 10 – Annular solar eclipse. Visible from Canada, Greenland, the U.S., Europe and Russia.

3) June 10 – New moon phase.

4) June 21 – Summer solstice. The Sun will shine directly over the tropic of Cancer. In the north, it is the first day of Summer and the shortest night of the year. In south, it’s the first day of winter and shortest day of the year.

5) June 24 – Super strawberry moon. The fourth and final supermoon of 2021.

JULY

1) July 3 – Venus and beehive cluster.

2) July 4 – Mercury at greatest eastern elongation.

3) July 6 – Earth at aphelion. The earth will reach it’s most distant point from the Sun.

4) July 10 – New moon phase.

5) July 13 – Conjunction of Venus and Mars. Venus will pass 0°24′ to the north of Mars look for the pair in the west at dusk.

6) July 24 – Full moon phase (Buck Moon).

7) July 30 – Southern δ­ Aquarids. Up to 25 meteors per hour best displays around midnight.

8) July 22 – NASA DART launch to asteroids Didymos and Dimorphos.

9) July 30 – Juno probe death dive into Jupiter.

10) July TBA – Astrobotic Peregrine lunar landing.

AUGUST

1) August 2 – Saturn at opposition. Saturn will make it’s closest approach to the Earth, it’s the best time to see the planet. Saturn will rise at sunset and will reach it’s highest point in the sky around midnight.

2) August 8 – New moon phase.

3) August 12 – Perseid meteor shower. One of the best annual meteor showers, the persieds can produce up to 150 metres per hour. The shower will reach it’s peak activity about an hour after midnight .

4) August 19 – Conjunction of Mars and Mercury. Mercury will pass 0°04′ to the south of mars.

5) August 20 – Jupiter at opposition. Jupiter will make its closest approach to the earth. It is the best time to watch the gas gaint with the naked eyes.

6) August 22
Blue moon
The only blue moon of 2021.

SEPTEMBER

1) September 1 – Aurigid meteor shower. Fireballs from comet kiess up to six meteors per hour.

2) September 7 – New moon phase

3) September 14 – Neptune at opposition. Neptune will make it’s closest approach to the Earth, ever at he opposition the planet will not be visible to the naked eye.

4) September 20 – Mars at apogee. The red planet will reach it’s most distant point from the earth.

5) September 20 – Full moon phase (Harvest Moon).

6) September 23 – Autumn Equinox. The sun will shine directly over the quarter for the second time this year. it’s the first day of autumn in the north and spring in the south.

OCTOBER

1) October 2 – Andromeda at culmination. The best time to see the Andromeda galaxy with naked eyes.

2) October 6 – New moon phase

3) October 8 – Mars at solar conjunction. Mars will paas close to the sun and will be unobservable for weeks to come Draconid meteor shower peaking at up to 10 meteors per hour.

4) October 11 – Intuitive Machines may launch its first moon lander for NASA.

5) October 20 – Full moon phase (Hunters Moon).

6) October 21 – Orionid meteor shower. One of the simplest meteor stream of the month up to fifteen meteors per hour.

7) October 25 – Mercury at greatest western elongation.

8) October 1 – Luna 25 lunar landing.

9) October 11– IM­1 Moon Mark lunar landing.

10) October 16 – NASA “Lucy” launch to multiple Jovian trojan asteroids.

11) October 21 – IXPE x­ray telescope launch.

12) October 31 – James Webb telescope launch.

NOVEMBER

1) November 4 – New moon phase.

2) November 4-5 – Taurids meteors.

3) November 5 – Uranus at opposition. Uranus will make it’s closest approach to the Earth. The ice giant will not be visible to naked eyes.

4) November 8 – Lunar occlutation of Venus. The moon will pass in front of Venus hiding the evening star for some time.

5) November 12 – Northern jaurids. The northern jaurid meteor shower will peak on Nov 12 up to 5 meteors per hour.

6) November 17 – Leonid meteor shower. Visible a couple of hours after midnight : up to 15 meteors per hour

7) November 19 – Full moon phase (Beaver Moon).

8) November 19 – Partial lunar eclipse. a.Visible from Oceania, the Americas, Eastern Asia, Northern Europe and Indonesia. b. The eclipse will last over 3.5 hours at the greatest eclipse, 97% of the Moon’s disk will lie in shadow. c. This will be the last lunar eclipse of the year 2021.

9) November TBA – XPoSat x­ray telescope launch.

10) November 1 – NASA Artemis 1 lunar orbit.

DECEMBER

1) December 4 – Total solar eclipse a. Visible over Antarctica, the South Atlantic Ocean and parts of South Africa. b. The totality will be visible from a small region. From other places, a partial eclipse will be seen. c. The eclipse will last over 4 hours and will be the final eclipse of 2021.

2) December 4 – New moon phase.

3) December 7 – Venus at it’s brightest. Venus will reach it’s peak brightness in 2021­2022 evening apparition. Venus will dazzle in the west after sunset.

4) December 13-14 – Geminid meteor shower a. The best meteor shower of the year will peak on dec 14 b. Under perfect conditions, the geminids can produce up to 150 meteors per hour. c. Geminids are known for their colour. Most of the shooting stars are yellow and white.

5) December 16 – Coma berenicid shower. Up to 5 bright meteors per hour, flying at 65 km/s

6) December 19 – Last full moon of 2021 ( cold moon ). The moon will reach it’s full phase for the last time in 2021.

7) December 22 – Ursid meteor shower. The last meteor shower of the year: up to 10 meteors per hour.

8) December 31 – Revolution complete.

DEFINITIONS

1. Conjunction – Occurs when two or more bodies appear close together in the sky.

2. Apogee – Point within the Moon’s orbit when it’s farthest from Earth.

3. Perigee – Point in the Moon’s orbit when it is nearest to Earth.

4. Blue moon – Second full moon to occur in a calendar month.

5. Occlutation – Passage of one object in front of a smaller one, thus obscuring all or part of the background object from view.

6. Opposition – When a planet farther from the Sun than Earth appears opposite the Sun in the sky. This is the simplest time to watch a planet because it is closet to the world .

7. Elongation – Is the apparent angular separation of an object from the Sun. Greatest elongation is best for viewing as it is at it’s highest point above the horizon.

8. Stationary – Object appears motionless in the sky due to the turning point between its direct and retrograde motion.

9. Inferior conjunction – When planet Mercury or Venus pass between the Sun and the Earth.

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