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Speaker Meeting
Date: Friday, September 03, 2010
Time: 19:30
Subject: SPACE: The next 50 years
Speaker: Dr. David Whitehouse
Location: United Reformed Church Hall, Newbury
Note: *** This meeting will take place in the URC Lecture hall instead of the normal church room. ***
 
Beginners Meeting
Date: Wednesday, September 15, 2010
Time: 19:00
Location: St. Mary's Church Hall, Greenham
 
Observing Session
Mark Byrne's Star Party
Date: Saturday, September 11, 2010
Time: 19:00
Location: Mark Byrne's House
Note: Contact Mark for directions on 01380 816211 or e-mail at mark.byrne@virgin.net
 
Special Meeting
Christmas Dinner
Date: Saturday, December 18, 2010
Time: 19:30
Subject: To Be Confirmed
Speaker: Dr. Allan Chapman  (Oxford University)
Location: The Square Restuarant, Weavers Walk, Newbury
Note: Booking essential for this meeting. Please contact a member of the committee to secure your place.
 

 
 


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View last month's planetary data
01 September 2010 - 30 September 2010
View next month's data (if available)

 

Page contents: Moon's phase | Solar data | Mercury | Venus | Mars | Jupiter | Saturn | Uranus | Neptune | Pluto | Meteor showers

The Moon's Phase
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Planetary Information
The Sun crosses the celestial equator at 0400 on the 23rd and marks the autumn equinox. Day and night are of equal length anywhere in the world on this date.
 
Mercury (Image: NASA) Mercury More about Mercury

Round about the middle of the month, Mercury appears above the eastern Horizon at civil twilight - 40 minutes or so before sunrise. The unmistakable shape of Leo lies above Mercury when it is at its highest altitude above the horizon - which is at its brightest towards the end of the month as it starts to dip towards the Sun.

Average Distance from the Sun
35,983,095 miles (57,909,175 km)

Equatorial Radius
1,516.0 miles (2,439.7 km)

Length of day
58.646 Earth days

Length of Year
87.97 Earth days

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Venus (Image: NASA) Venus More about Venus

Venus is too close to solar conjunction to be a favourable object.

Average Distance from the Sun
67,237,910 miles (108,208,930 km)

Equatorial Radius
3,760.4 miles (6,051.8 km)

Length of day
243 Earth days (retrograde)

Length of Year
224.7 Earth days

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Mars (Image: NASA) Mars More about Mars

Mars’ elongation for the Sun is only 38° mid-month and as it is relatively faint it will be a hard object to fins in the evening sky, setting only an hour after the Sun by the 30th.

Average Distance from the Sun
141,633,260 miles (227,936,640 km)

Equatorial Radius
2,111 miles (3,397 km)

Length of day
1.026 Earth days

Length of Year
1.8807 Earth years

Number of moons
2

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Jupiter (Image: NASA) Jupiter More about Jupiter

Jupiter is at opposition on the 21st and is therefore at its best for observation. Presenting a nice, big disk almost 50” across even a medium magnification will reveal detail about the planet’s cloud tops and binoculars show its four Galilean satellites clearly. Is your eyesight so good that you can see any of the satellites with your naked eye?

They are certainly bright enough but without optical aid, they are very close to the planet.

On the 18th there is a very favourable conjunction between Jupiter and Uranus with the latter lying less than a degree to the north of Jupiter.
On the 23rd at 0700 Jupiter is 6° south of the Moon.

Average Distance from the Sun
483,682,810 miles (778,412,020 km)

Equatorial Radius
44,423 miles (71,492 km)

Length of day
9.925 hours

Length of Year
11.8565 Earth years

Number of moons
62

Number of rings
3

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Saturn (Image: NASA) Saturn More about Saturn

Saturn is poorly placed in the constellation of Virgo. After its solar conjunction last month it will be a little while before it’s available for viewing again.

Average Distance from the Sun
885,904,700 miles (1,426,725,400 km)

Equatorial Radius
37,449 miles (60,268 km)

Length of day
10.656 hours

Length of Year
29.4 Earth years

Number of moons
62

Number of rings
Thousands

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Uranus (Image: NASA) Uranus More info...

Uranus is at opposition on the 22nd in Pisces. As it is quite low down as seen from the UK, it is not usually an object to search for under light-polluted skies but as mentioned above it is currently ideally placed, lying less than a degree north of Jupiter. It is bright enough to be visible using binoculars but a high magnification is necessary to reveal the ‘star’ as a small planetary disk.

Average Distance from the Sun
1,783,939,400 miles (2,870,972,200 km)

Equatorial Radius
15,882 miles (25,559 km)

Length of day
17.24 hours (retrograde)

Length of Year
84.02 Earth years

Number of moons
27

Number of rings
13

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Neptune (Image: NASA) Neptune More info...

Neptune is also still available for viewing but a telescope is definitely needed to positively identify the planet.

Average Distance from the Sun
2,795,084,800 miles (4,498,252,900 km)

Equatorial Radius
15,388 miles (24,764 km)

Length of day
16.11 hours

Length of Year
164.79 Earth years

Number of moons
13

Number of rings
9

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Pluto (Image: NASA) Pluto More info...

Pluto is in the constellation of Sagittarius, 2° 38’ NNE of Mu Sagittarii.

Average Distance from the Sun
3,670,050,000 miles (5,906,380,000 km)

Equatorial Radius
715 miles (1,151 km)

Length of day
6.387 Earth days (retrograde)

Length of Year
247.92 Earth years

Number of moons
1

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Meteor showers
  • The Piscids have a double maximum this month; on the 9th and 21st. The 9th is favourable, but the 21st, is not due to a full Moon on the 23rd. rate are around 5 per hour can be expected on both dates.
  • The Alpha Aurigids reach their second maximum of the year on the 15th and is fairly favourable this year.


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The information provided above is taken from Astro Calendar, available from the Federation of Astronomical Societies

Pictures relating to this month's what's up

Website designed by Paul Thompson.
Graphics based on designs by Adrian West.

The site is maintained by Paul Thompson and members of the Society committee.
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