Archive for July, 2010

July 2010

Thursday, July 1st, 2010

Lunar Events

The New Moon for July occurs on Sunday, July 11 which will make the weekend of July 10-11 the very best for dark sky observing.

The Full Moon occurs on July 25th and is known as the Full Sturgeon Moon or Full Grain Moon.

Celestial Events

Total Solar Eclipse

On July 11th, there is a Total Eclipse of the Sun which will be visible across the South Pacific and can be partially visible to the south part of South America. solar Eclipse


This movie shows the July 11, 2010 Solar Eclipse as view from the Moon. Note the Moon’s shadow moving west to east across the South Pacific. Each frame is one minute.

Aphelion - July 6, 2010

Aphelion

The Aphelion is the point in Earth’s elliptical orbit that it is furthest from the Sun.  This is the opposite point to the Perihelion when the Earth is at its closest point to the Sun, which occurs in January.

Mercury

Mercury emerges into the evening sky from the glare of the Sunset around July 8th.

Mercury begins July, hidden by the Sun, in the constellation Gemini (The Twins) and on July 8th, as it crosses into the constellation Cancer (The Crab), it emerges from the glare of the Sun. On July 19th, Mercury moves into the constellation Leo (The Lion).

Mercury, M44 and Moon
On the evenings of July12th and 13th, Mercury can be observed passing through the Beehive Cluster (M44) and on July 12th, the waxing, crescent moon will pass less than 5° from Mercury.

On July 27th, Mercury and the Star Regulus will be in conjunction and be a mere 0°25’ apart. Mercury Regulus

Venus

Venus is the Evening Star and can be found in the constellation Leo (The Lion) for the entire month of July.

Venus & Regulus
On July 9th, Venus and the Star Regulus will be in conjunction less than 1° from each other.

Venus and Moon
On July 14th, the waxing, crescent Moon will pass within 6°45’ of Venus.

Mars

Mars is observable in the evening hours all month. Mars set at the start of July around 11:35 pm (PDT) and by the end of the month is setting around 10:20 pm (PDT).

Mars begins July in the constellation Leo (The Lion) and on July 17th passes into the constellation Virgo (The Maiden).

Mars and Moon
On July 15th, Mars sets less than 7° of waxing, crescent Moon.

Mars and Saturn
July 31st finds Mars and Saturn in conjunction less than 1°50’

from each other.

Jupiter

Jupiter can be found in the constellation Pisces (The Fish) from the very late evening to morning hours of July. Jupiter rises around 12:30 am (PDT) at the start of July and by the end rises around 10:30 pm (PDT).

Jupiter Uranus and Moon
On July 3rd, the waning, gibbous Moon sets about 7° from Jupiter.

On July 23rd, Jupiter begins retrograde motion across the sky moving each night from West to East.

Jupiter Uranus and Moon
On July 30, the waning, gibbous Moon passes less than 6° from Jupiter.

Saturn

Saturn is located in the constellation Virgo (The Maiden) until December 2012. Saturn is observable from the very late evening hours through the morning, rising around 12:20 am (PDT) at the start of July and by the end rising around 10:25 pm (PDT).

Mars and Saturn
July 31st find Mars and Saturn in conjunction less than 1°50’
from each other.

Uranus

Uranus can be found in the vicinity of the planet Jupiter all month. Uranus is located in the constellation Pisces (The Fish) until May 2012. Uranus is observable from the very late evening hours though morning this month. At the start of July Uranus rises around 12:20 pm (PDT) and by the end of the month rises around 10:20 pm (PDT).

Jupiter Uranus and Moon
On July 3rd, the waning, gibbous Moon passes within 5°45’ of Uranus.

Jupiter Uranus and Moon
On July 30th the waning, gibbous Moon passes within 5°30’ of Uranus.

Neptune

Moving in retrograde this month, Neptune is located in the constellation Aquarius (The Water Bearer) for the entire month of July. Neptune can be observed from the very late evening hours though morning. Uranus rises about 12:20 am (PDT) at the start of July, and by the end, rises around 10:20 pm (PDT).

Neptune and Moon On July 27th, the waning, gibbous Moon passes within 3°35’ of Neptune.

Pluto

Pluto is located in the constellation Sagittarius (The Archer) until the year 2023.  Pluto is in excellent position for observing and is up all night all month.

On July 23rd, the waxing, gibbous Moon passes with 6° of Pluto. Pluto and Moon


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