Basic Astronomy

Astronomical Calendar 2013


2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

January February March April May June July August September October November December

EventsDateDescription
January
Quadrantid meteor shower3-4 Jan 2013

Quadrantid meteor shower will be peaked on 3rd and 4th January but it will be visible on 1-5 January 2013. One can see upto 40 meteors per hour. Meteors seems to radiate from the constellation Bootes, close to the North Star. Usually, upto 40 meteors per hour is visible during peak. In 1932, the Quadrantid meteor shower showed maximum activity with 80 meteors per hour.

Mercury at Aphelion3rd Jan 2013

Mercury reaches the farthest point from the Sun.

Earth at Perihelion3rd Jan 2013

Earth reaches the closest point to the Sun.

New Moon11th Jan 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

The Moon at Apogee22nd Jan 2013

Moon will reach apogee, the farthest point from Earth (405,313 km from Earth).

Full Moon27th Jan 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

February
New Moon10th Feb 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Passage of Asteroid 2012 DA1415th Feb 2013

Asteroid 2012 DA14 will pass by Earth at an altitude of 27.000 km.

Mercury at the highest elongation16th Feb 2013

18.1 degree E.

Mercury at the perihelion17th Feb 2013

Mercury reaches its closest point to the Sun.

The Moon at Apogee19th Feb 2013

Moon reaches the farthest point from Earth (404,475 km from Earth).

Neptune-Sun Conjunction21st Feb 2013

Venus at the Aphelion21st Feb 2013

Venus reaches the farthest point from the Sun.

March
Moon at the Perigee6th Mar 2013

Moon reaches perigee, the closest point to Earth (369,954 km from Earth).

New Moon11th Mar 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Moon at the Apogee19th Mar 2013

Moon reaches apogee, the farthest point from Earth (404,262 km from Earth).

Equinox of March20th Mar 2013

The Sun will shine directly on the equator and the days and nights will be almost equal in the whole world. This is also the first day of spring (spring equinox) in the northern hemisphere and the first day of fall (autumnal equinox), in the southern hemisphere. March Equinox occurs at 05:14 UT.

Full Moon27th Mar 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

Uranus-Sun Conjunction29th Mar 2013

Mercury at the highest elongation31st Mar 2013

27.8 degree W.

April
Moon at the Apogee16th Apr 2013

Moon reaches apogee, the farthest point from Earth (404,865 km from Earth).

Mars-Sun Conjunction18th Apr 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

Lyrid meteor shower21-22 Apr 2013

Lyrid is a medium intensity meteor shower. It usually produces about 20 meteors per hour in its peak. The shower will peak on 21-22 April but some meteors will be visible between 16 to 25th April. There will be no moon during night, so it will be ideal to watch the show. Meteors seems to radiate from the constellation Lyra.

Partial Lunar Eclipse25th Apr 2013

Earth is between the Moon and the Sun and Earth shadow will partially cover lunar disc. Eclipse will be visible mostly from Europe, Asia, Africa and Australia.

Full Moon25th Apr 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

Moon at the Perigee27th Apr 2013

Moon reaches perigee, the closest point to Earth (362,268 km from Earth).

Saturn in opposition28th Apr 2013

Saturn will be closest to Earth and it's face will be fully illuminated by the Sun.

May
Eta Aquarid meteor shower5-6 May 2013

Eta Aquarid is a low intensity meteor shower. It usually produces about 10 meteors per hour in its peak. The shower will peak on 5-6 May. Meteors seems to radiate from the constellation Aquarius.

New Moon10th May 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Moon at the Apogee13th May 2013

Moon reaches apogee, the farthest point from Earth (404,262 km from Earth).

Mercury at the perihelion16th May 2013

Mercury reaches its closest point to the Sun.

Full Moon25th May 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

Conjunction of Venus with Jupiter28th May 2013

The two bright planets will be at 1 degree apart in the sky series. Mercury will also be visible nearby.

Moon at the Perigee28th May 2013

Moon reaches perigee, the closest point to Earth (362,268 km from Earth).

June
New Moon8th June 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Moon at the Apogee9th Jun 2013

Moon reaches apogee, the farthest point from Earth (404,262 km from Earth).

June Solstice20th Jun 2013

North Pole of the Earth will be tilted towards the Sun, which will reach the northernmost position in the sky. This is the first day of summer (summer solstice) on the northern hemisphere, and the first day of winter (winter solstice), in the southern hemisphere. June solstice occurs at 23:09 UT.

Full Moon23th Jun 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

Moon at the Perigee23rd Jun 2013

Moon reaches perigee, the closest point to Earth (356,990 km from Earth).

Mercury at Aphelion29th Jun 2013

Mercury reaches the farthest point from the Sun.

July
Earth at Aphelion5th Jul 2013

Earth reaches the furthest point to the Sun.

Moon at the Apogee7th Jul 2013

Moon reaches apogee, the farthest point from Earth (406,493 km from Earth).

New Moon8th July 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Moon at the Perigee21st Jul 2013

Moon reaches perigee, the closest point to Earth (358,402 km from Earth).

Full Moon22nd Jul 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

South Delta Aquarids meteor shower28-29th Jul 2013

This is a medium intensity meteor shower with about 20 meteors per hour at peak. These meteors will come out from constellation Aquarius.

August
Moon at the Apogee3rd Aug 2013

Moon reaches apogee, the farthest point from Earth (405,834 km from Earth).

New Moon6th Aug 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Mercury at Aphelion12th Aug 2013

Mercury reaches the farthest point from the Sun.

Perseid meteor shower12-13th Aug 2013

Perseids are one of the strong meteor showers. It produce up to 60 meteors per hour at peak hours. Radiant point of this shower is in the constellation Perseus.These meteors originate from the tail of comet Swift-Tuttle.

Moon at the Perigee19th Aug 2013

Moon reaches perigee, the closest point to Earth (362,265 km from Earth).

Full Moon21st Aug 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

September
Moon at the Perigee15th Sep 2013

Moon reaches perigee, the closest point to Earth (367,388 km from Earth).

Full Moon19th Sep 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

September Equinox22nd Sep 2013

The Sun will shine directly on the equator. Days and nights will be almost equal in the whole world. This is also the first day of fall (autumn equinox) on the northern hemisphere, and the first day of spring (vernal equinox), in the southern hemisphere.

Moon at the Apogee27th Sep 2013

Moon reaches apogee, the farthest point from Earth (404,309 km from Earth).

October
Venus at the Aphelion3rd Oct 2013

Venus reaches the farthest point from the Sun.

New Moon5th Oct 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Moon at the Perigee11th Oct 2013

Moon reaches perigee, the closest point to Earth (369,813 km from Earth).

Full Moon18th Oct 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

Penumbral Lunar Eclipse18th Oct 2013

Except Australia and extreme eastern Siberia, the eclipse will be visible all over the world.

Orionid meteor shower21-22 Oct 2013

Orionid is a medium intensity meteor shower and one can see about 25 meteors per hour.

Moon at the Apogee25th Oct 2013

Moon reaches apogee, the farthest point from Earth (404,561 km from Earth).

November
New Moon3rd Nov 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Hybrid Solar Eclipse3rd Nov 2013A total solar eclipse will take place on 3rd November, 2013. It will be a hybrid eclipse of the Sun with a magnitude of 1.0159.
Moon at the Perigee6th Nov 2013

Moon reaches perigee, the closest point to Earth (367,388 km from Earth).

Mercury at Aphelion6th Nov 2013

Mercury reaches the farthest point from the Sun.

Full Moon17th Sep 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

Leonids meteor shower17-18th Nov 2013

Annual event of Leonids meteor shower can be seen on 16-17th November. Leonids meteor shower is visible towards the constellation Leo, the Lion. During Leonids meteor shower, Earth will pass through a stream of debris which is left behind by comet Tempel-Tuttle.

Moon at the Apogee22nd Nov 2013

Moon reaches apogee, the farthest point from Earth (404,561 km from Earth).

December
New Moon3rd Dec 2013

Moon will be directly between the Earth and the Sun and will not be visible from Earth.

Moon at the Perigee4th Dec 2013

Moon reaches perigee, the closest point to Earth (369,813 km from Earth).

Geminids meteor shower13-14th Dec 2013

Geminids meteor shower is a strong meteor shower. Annual event of Geminids meteor shower take place on 13-14th December but some meteors will be visible between 6 to 19th December. For many observers, geminid is the best meteor shower. It can produce 60-80 meteors per hour at its peak.

Full Moon17th Oct 2013

Earth is between the Sun and the Moon and so the Moon will be fully illuminated as seen from Earth.

Moon at the Apogee20th Dec 2013

Moon reaches apogee, the farthest point from Earth (406,269 km from Earth).

The December solstice21st Dec 2013

On this day, south pole of the Earth will be tilted towards the Sun, and will reach the most northern position in the sky. This makes it the first day of winter (winter solstice), in the northern hemisphere, and the first day of summer (summer solstice), in the southern hemisphere.

Mercury at Aphelion22nd Dec 2013

Mercury reaches the farthest point from the Sun.

Ursids meteor shower22-23 Dec 2013

Ursids meteor shower is a medium intensity meteor shower. Ursids meteor shower peaks on 22-23 December. It usually produces 5-10 meteors per hour but occasionally it can produce about 100 meteors per hour.

Terminology

Aphelion: Farthest position of a planet from the Sun.

Perihelion: Closest position of a planet from the Sun.

Apogee: the position of the Moon farthest from Earth.

Perigee: the position of the Moon closest from Earth.

Superior Conjunction: Venus or Mercury is on the opposite side of the Sun from Earth.

Inferior Conjunction: Venus or Mercury is between the Earth and Sun.

Greatest elongation: elongation is the angle between the Sun and a planet as seen from Earth, during eastern elongation, the planet appears as an evening star, during western elongation, the planet appears as a morning star.

Opposition: position in the orbit of a planet when opposites the Sun as seen from Earth.

Conjunction: position in the orbit of a planet when appears closer to the Sun as seen from Earth.

Occultation: Moon occults or eclipses a planet or a star.

Full moon and New moon: 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Meteor shower calendar

Apogee and Perigee of moon: 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

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