Posts Tagged ‘Jupiter Opposion’

Many Astronomical Events Coming Up!

Tuesday, September 14th, 2010

September is a busy month: besides Jupiter and Uranus reaching opposition at the same time, Mercury will reach its greatest western elongation, and the Autumnal Equinox and harvest moon will occur.

Mercury will reach its greatest western elongation on September 19. It will rise over an hour before sunrise and should be a great telescope target in the eastern sky into late September. It will appear at its highest and brightest point on the 19th.

The Autumnal Equinox occurs September 22 and the harvest moon follows September 23. The harvest moon is the full moon that occurs closest to the autumnal equinox, called that because its rising time nearly overlaps the setting sun so farmers could continue the harvest into the night hours due to the moon’s light. Since the Autumnal Equinox, when the sun rises due east and sets due west (everywhere except at the poles), is on September 22, the full moon the following night (September 23) is the harvest moon.

Please Note: The above article is made possible by the research and writing of JJ Stamm - Thank you JJ

August 2009

Saturday, August 1st, 2009

Lunar Events

The Full Moon for August occurs on August 5th.  It is known as the Full Sturgeon Moon.  It is also known as the Grain or Green Corn Moon. On August 5th, there will be a Penumbral Lunar Eclipse visible from Africa, South America, Europe and the Middle East.

The New Moon occurs on Thursday, August 20th.  This will make the weekend of August 22-23 as the best weekend for dark sky viewing this month.


M2ercury Opposition
The planet Mercury is visible in the evening this month and reaches its

Greatest Eastern Elongation on August 24thMercury’s Greatest Eastern

Elongation provides the best evening view for its current orbit. At this

point, Mercury is 27°21’55” from the Sun, making it visible for almost

2 hours after sunset.

Mercury begins August in the constellation Leo (The Lion) until August 20th when it moves into the constellation Virgo (The Maiden).

On August 1st Mercury is a mere 0°40’ from the star Regulus.

Mercury, Saturn
On August 16th Mercury passes within 3° from the planet Saturn.

M2ercury, Moon
On August 21st, the waxing crescent Moon passes less than 5°30 on


Venus is the Morning Star for August. Venus begins this month in the constellation Gemini (The Twins) and on August 24th, Venus moves into the constellation Cancer (The Crab).

On August 2nd, Venus is within 2°30’ of the open cluster, M35. Venus M35


Mars is observable during the morning hours of August.  At the beginning of the month Mars rises around 2:00 am (PDT) and by the end of the month Mars rises around 1:20 am (PDT).  Mars begins this month in the constellation Taurus (The Bull) and on August 25 it moves into the constellation Gemini (The Twins) where it will finish out the month.

On August 15th and 16th Mars is located about 7° from the waning crescent Moon.

Mars M35 On August 29th, Mars will pass within 0°50’ of the open cluster, M35.


This month is the best time to observe Jupiter this year since Jupiter reaches opposition on August 14thJupiter is visible all night, all month in the constellation Carpicornus (The Sea Goat), where it can be found until January 2010.  Currently, Jupiter is moving in retrograde motion.

On August 6th, Jupiter sets within 4°45’ of the Full Moon. Jupiter Moon


Saturn is visible in the early evening hours during August.  At the beginning of the Month Saturn sets around 9:50 pm (PDT) and by the end of August Saturn sets around 8:00 pm (PDT). Saturn is located in the constellation Leo (The Lion) until September.  Saturn disappears into the glare of the Sunset at the end of August.

Saturn Mercury
On August 16th, Mercury passes within 3° from the planet Saturn.


Uranus is located in the constellation Pisces (The Fish) until October.  At the beginning of August Uranus rises around 10:05 pm (PDT) and by the end of the month Uranus rises around 8:00 pm (PDT).

Uranus Moon
On August 9th, the waning, gibbous moon passes within 5° of Uranus.


Moving in retrograde this month, the planet Neptune is visible, all night, since it will reach Opposition on August 17th.  This month will be the best time this year to observe Neptune, which is located in the constellation Capricornus (The Sea Goat) until the year 2010.

Neptune JupiterNeptune starts August less than 1°50’ from the planet Jupiter.

N2ptune, Jupiter Moon
And on August 6th, Neptune, Jupiter and the waning, gibbous Moon can be found less than 5° of each other.



Pluto can be observed in the morning hours of August in the constellation Sagittarius (The Archer), where it is located unto the year 2023.  The planet Pluto is currently in retrograde motion.

August 2nd finds Pluto about 9° from the waning, gibbous Moon. Pluto Moon

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