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Astronomical Observing at Fishcreek - Friday 10/19/2007

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This event was Cancelled due to threatening weather

 

Tonight's event will feature a just past First Quarter Moon with lots of detail visible on the terminator - the line separating lunar day from night.  We'll have the planet Jupiter which is almost gone for this season, but two of its moons will be putting on a show for us: Europa moves behind Jupiter at 7:15pm and Ganymede comes out of eclipse at 8:12pm low on the horizon, colorful double stars, open clusters made up of hundreds of stars, globular clusters comprised of hundreds of thousands of stars, planetary nebula formed by dying stars, diffuse nebula and emission nebula where stars are being born, will all be available to us the entire night.  Many amateur astronomers feel that late fall is the best time to observe since there are beautiful objects of all categories available and the Milky Way, the galaxy in which we live, is directly overhead.  Bring binoculars if you have them, there’s plenty to see with them if you know where to look - and we’ll be happy to show you!

Click Here for a list of DeepSky Objects that will be available to us this session.

We hope to see you here for a night under the stars - now in our thirteenth year!

For observing conditions at our site, please click on the link below: 

ClearSkyClock for Fishcreek Site  (the darker blue the squares are, the better)

Quick links:
    Inner Solar System     Outer Solar System    General Information about our events

The following Sun, Moon and planet detail
was calculated as it will be on Friday
10/19/07 at 7:39:15pm (nautical twilight)
Source: Guide8 software available from www.projectpluto.com

Above Horizon Below Horizon
  Sun
  Mercury
  Venus
Moon  
  Mars
Jupiter  
  Saturn
Uranus  
Neptune  
Pluto  

 

Sun data
 
Rises: 7: 38am
Transits: 1: 10pm - Time of highest position in the sky, due South
Sets: 6: 42pm
Constellation:   Virgo
Distance:   0.99594239 AU = 148,990,861 km = 92,578,630 miles = 8.3 light-minutes
Magnitude:   -26.7
Apparent size:   32.12 arcminutes in angular diameter
Twilight ends...    
Civil:   7:07pm - Sun is 6° below the horizon
Nautical:   7:39pm - Sun is 12° below the horizon
Astronomical:   8:11pm - Sun is 18° below the horizon
Winter Solstice:   Saturday Dec 22, 2007 at 2:08am (when winter will officially be here)
Next Solar Eclipses in Stow, Ohio:
    Partial eclipse (>80%) on Monday August 21, 2017 2:30pm EDT
    Total eclipse (an amazing sight!) on Monday April 8, 2024 2:15pm EST (3:15pm EDT)
At 7:39pm the Sun will be 12º below the west-southwest horizon

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Moon data
 
Rises: 3: 14pm
Transits: 8: 00pm - Time of highest position in the sky, due South
Sets: 0: 54pm Oct 20
Constellation:   Capricornus
Phase:   56.46% illuminated (waxing gibbous)
Distance:   0.00256411 AU = 383,586 km = 238,349 miles = 1.28 light-seconds
Magnitude:   -10.4
Apparent size:   31.14 arcminutes in angular diameter
Elongation from Sun:   97.28 degrees (evening sky)
Age:   8.78 days since last New Moon
Next Phase:   Full Moon on Friday Oct 26, 2007 at 0:52am
Next Lunar eclipse:   Total eclipse (100%) on Wednesday Feb 20, 2008 at 9:58pm EST
At 7:39pm the Moon will be 25.8º above the south-southeast horizon
and will look like this:


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Mercury data
 
Rises: 8: 34am
Transits: 1: 42pm - Time of highest position in the sky, due South
Sets: 6: 52pm
Constellation:   Virgo
Phase:   5.45% illuminated
Distance:   0.675904 AU = 101,113,799 km = 62,829,203 miles = 5.63 light-minutes
Magnitude:   3.0
Apparent size:   9.95 arcseconds in angular diameter
Elongation from Sun:   9.05 degrees (evening sky)
Next maximum elongations...
Morning:   Thursday 11/08/2007 (18° 58' 34")
Evening:   Tuesday 1/22/2008 (18° 38' 41")
At 7:39pm Mercury will be 9.7º below the west-southwest horizon

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Venus data
 
Rises: 3: 47am
Transits: 10: 18am - Time of highest position in the sky, due South
Sets: 4: 49pm
Constellation:   Leo
Phase:   45.66% illuminated (waxing crescent)
Distance:   0.62690858 AU = 93,784,188 km = 58,274,793 miles = 5.22 light-minutes
Magnitude:   -4.4  Bright, visible in the morning well before sunrise
Apparent size:   26.62 arcseconds in angular diameter
Elongation from Sun:   46.18 degrees (morning sky)
Next maximum elongations...
Morning:   Sunday 10/28/2007 (46° 27' 59")
Evening:   Wednesday 1/14/2009 (47° 07' 21")
At 7:39pm Venus will be 29.5º below the west-northwest horizon

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Mars data
 
Rises: 10: 31pm
Transits: 6: 07am Oct 20 - Time of highest position in the sky, due South
Sets: 1: 44pm Oct 20
Constellation:   Gemini
Phase:   88.65% illuminated
Distance:   0.84421829 AU = 126,293,259 km = 78,474,994 miles = 7.03 light-minutes
Magnitude:   -0.4 (getting brighter)
Apparent size:   11.08 arcseconds in angular diameter (getting larger)
Elongation from Sun:   108.09 degrees (morning sky)
Next close approach:   Monday Dec 24, 2007
At 7:39pm Mars will be 21.8º below the north horizon

No, Mars was *not* "...as big as a Full Moon on August 27!"
Please see the following links for more information about this annual 'Mars Hoax'
    Sky & Telescope article
    Snopes.com article
    Hoax-slayer article
    Universe Today article

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Jupiter data
 
Rises: 11: 57am
Transits: 4: 38pm - Time of highest position in the sky, due South
Sets: 9: 20pm
Constellation:   Ophiuchus (pronounced oh-fee-oo'-cuss)
Phase:   99.46% illuminated
Distance:   5.84121632 AU = 873,833,524 km = 542,974,985 miles = 48.65 light-minutes
Magnitude:   -1.9
Apparent size:   33.75 arcseconds in angular diameter
Elongation from Sun:   51.14 degrees (evening sky)
At 7:39pm Jupiter will be 13.8º above the south-southwest horizon
Next transit of the Great Red Spot:  Saturday Oct 20 2007 at 0:55am
GRS longitude: 117.8º
Lots of action with Jupiter's moons tonight:
     Europa moves behind Jupiter at 7:15pm
     Ganymede comes out of eclipse at 8:12pm

This animated GIF of Jupiter and its moons begins at 6:40pm EDT and runs until Jupiter is below the horizon.
You can read the altitude and azimuth in the caption below Jupiter.  This image is neither inverted nor reversed
and is oriented as it would appear in binoculars or a non-inverting telescope.  Frames are 10 minutes apart.
'Alt' is degrees above the horizon, 'Az' is degrees of azimuth: 0 is north, 90 is east, 180 is south and 270 is west
Ganymede is rendered in orange until it emerges from Jupiter's shadow at 8:12pm EDT
Callisto is off-screen to the left

Animation is centered on Jupiter to better show the motion of the moons

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Saturn data
 
Rises: 3: 22am
Transits: 10: 05am - Time of highest position in the sky, due South
Sets: 4: 49pm
Constellation:   Leo
Phase:   99.83% illuminated
Distance:   9.84453364 AU = 1,472,721,270 km = 915,106,583 miles = 1.37 light-hours
Magnitude:   0.8
Apparent size:   16.88 arcseconds in angular diameter
Elongation from Sun:   50.80 degrees (morning sky)
At 7:39pm Saturn will be 28.2º below the northwest horizon

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Uranus data
 
Rises: 4: 57pm
Transits: 10: 40pm - Time of highest position in the sky, due South
Sets: 4: 22am Oct 20
Constellation:   Aquarius
Phase:   99.97% illuminated
Distance:   19.33116736 AU = 2,891,901,475 km = 1,796,944,290 miles = 2.68 light-hours
Magnitude:   5.8
Apparent size:   3.65 arcseconds in angular diameter
Elongation from Sun:   139.06 degrees (evening sky)
At 7:39pm Uranus will be 26.8º above the east-southeast horizon

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Neptune data
 
Rises: 3: 50pm
Transits: 9: 00pm - Time of highest position in the sky, due South
Sets: 2: 10am Oct 20
Constellation:   Capricornus
Phase:   99.98% illuminated
Distance:   29.63978588 AU = 4,434,048,855 km = 2,755,190,258 miles = 4.11 light-hours
Magnitude:   7.9
Apparent size:   2.30 arcseconds in angular diameter
Elongation from Sun:   113.08 degrees (evening sky)
At 7:39pm Neptune will be 30.5º above the southeast horizon

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Pluto (Dwarf Planet aka Asteroid 134340) data
 
Rises: 12: 16pm
Transits: 5: 20pm - Time of highest position in the sky, due South
Sets: 10: 24pm
Constellation:   Sagittarius
Phase:   99.98% illuminated
Distance:   31.83372951 AU = 4,762,258,151 km = 2,959,130,062 miles = 4.42 light-hours
Magnitude:   14.2
Apparent size:   0.10 arcseconds in angular diameter
Elongation from Sun:   60.77 degrees (evening sky)
At 7:39pm Pluto will be 23.6º above the south-southwest horizon

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Inner Solar System - the Sun, Mercury, Venus and Earth
(Created using Software Bisque's
TheSky software)
Click for MOON data Click for VENUS data Click for MERCURY data Click for SUN data

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Outer Solar System - the Sun, Mars, Jupiter, Uranus, Neptune and Pluto
(Created using Software Bisque's
TheSky software)
Click for NEPTUNE data Click for URANUS data Click for PLUTO data Click for JUPITER data Click for SATURN data Click for MARS data Click for SUN data Click for MOON data

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General Information you should know about our events - Q&A of Where, When and What


Very sincerely yours,
Dave Jessie
"Time spent observing the heavens is not deducted from your life span"

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