Astronomical Observing at Fishcreek - Friday 7/13/2007

This week, the Moon won't be in the way at all since it doesn't rise until 4:35am Saturday morning, so there will be plenty of time to catch those ancient photons from the deep sky objects we love.  We'll also be viewing the three planets that are currently well-placed for us:  Saturn and its beautiful rings, Venus appearing like a tiny crescent Moon in the telescopes, and Jupiter, the king of the planets.  Jupiter's Great Red Spot should be visible as well as its four moons: Io, Europa, Ganymede and Callisto.  Double stars - some quite colorful - are another class of object we love to observe and there are plenty of those to see.  Globular clusters, open clusters, planetary nebula and galaxies are all on the agenda.  We'll have another great night with plenty to keep us busy until who knows when.

We hope to see you here for a night under the stars - our twelfth year.

Observing conditions in Stow, map to our location and other useful information is available here:

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

For exact directions to our location, just click on 'Road Map' in the 'Nifty Links' section immediately below the Sky Clock.

The following Sun, Moon and planet detail was calculated as it will be on Friday, 7/13/07 at 10:13pm (nautical twilight).
Source: Guide8 software available from

Quick links:
Sun  Moon  Mercury  Venus  Mars  Jupiter  Saturn  Uranus  Neptune  Pluto  &  General Information
All times are shown in EDT (Eastern Daylight Time) as seen from Stow, Ohio.

Sun data:
     Rise 6:00am
     Transit: 1:31pm (Time of highest position in the sky, due South)
     Sets 9:01pm
     Constellation: Gemini
     Distance: 1.01658157 AU = 152,078,439 km = 94,497,162 miles
     Magnitude: -26.7
     Apparent size: 31.47 arcminutes in angular diameter
     Civil twilight ends at 9:31pm ( When the Sun is 6 degrees below the horizon )
     Nautical twilight ends at 10:13pm ( When the Sun is 12 degrees below the horizon )
     Astronomical twilight ends at 11:01pm ( When the Sun is 18 degrees below the horizon )
     Autumnal Equinox: Sunday Sept 23, 2007 at 5:51am (when fall will officially be here)
     (back to 'Quick Links')

Moon data:
     Rise 4:35am
     Transit: 12:48pm (Time of highest position in the sky, due South)
     Sets 8:54pm
     Constellation: Gemini
     Phase: 0.32% illuminated (waning crescent)
     28.96 days since last New Moon
     Distance: 0.00252204 AU = 377,292 km = 234,438 miles
     Magnitude: -4.3
     Apparent size: 31.66 arcminutes in angular diameter
     Elongation from Sun: 6.50 degrees (morning sky)
     Next Phase: New Moon on Saturday July 14, 2007 at 8:04am
     Next Lunar eclipse: Tuesday August 28, 2007 at 5:51am
     (back to 'Quick Links')

Mercury data:
     Rise 4:55am
     Transit: 12:13pm (Time of highest position in the sky, due South)
     Sets 7:32pm
     Constellation: Orion
     Phase: 20.28% illuminated (waxing crescent)
     Distance: 0.72526480 AU = 108,498,069 km = 67,417,575 miles
     Elongation from Sun: 18.52 degrees (morning sky)
     Magnitude: 1.4
     Apparent size: 9.27 arcseconds in angular diameter
     (back to 'Quick Links')

Venus data:
     Rise: 9:22am
     Transit 4:05pm (Time of highest position in the sky, due South)
     Set: 10:48pm
     Constellation: Leo
     Phase: 25.26% illuminated (waning crescent)
     Elongation from Sun: 38.42 degrees (evening sky)
     Distance: 0.43675523 AU = 65,337,653 km = 40,598,936 miles
     Magnitude: mag -4.5 (VERY bright!)
     Apparent size: 38.20 arcseconds in angular diameter
At 10:13pm Venus will be at an altitude of 5 and look like this in the telescopes:
     (back to 'Quick Links')

Mars data:
     Rise: 1:46am Jul 14
     Transit 8:45am Jul 14 (Time of highest position in the sky, due South)
     Set: 3:45pm Jul 14
     Constellation: Aries
     Phase: 86.89% illuminated
     Distance: 1.41416931 AU = 211,556,717 km = 131,455,251 miles
     Magnitude: mag 0.6
     Apparent size: 6.62 arcseconds in angular diameter (getting larger)
     Elongation from Sun: 67.64 degrees (morning sky)
     Next close approach of Mars is on Monday, Dec 24, 2007
     (back to 'Quick Links')

Jupiter data:
     Rise: 5:51pm
     Transit 10:36pm (Time of highest position in the sky, due South)
     Set: 3:22am Jul 14
     Constellation: Ophiuchus (pronounced oh-fee-oo'-cuss)
     Phase: 99.61% illuminated
     Distance: 4.49281394 AU = 672,115,399 km = 417,633,152 miles
     Magnitude: mag -2.5
     Elongation from Sun: 139.49 degrees (evening sky)
     Apparent size: 43.88 arcseconds in angular diameter
     Next transit of the Great Red Spot: July 13 at 11:34pm
At 10:13pm Jupiter and its four moons will be at an altitude of 27  and look like this in the telescopes
     (back to 'Quick Links')

Saturn data:
     Rise: 8:47am
     Transit 3:46pm (Time of highest position in the sky, due South)
     Set: 10:45pm
     Constellation: Leo
     Phase: 99.91% illuminated
     Distance: 10.06442758 AU = 1,505,616,936 km = 935,547,002 miles
     Magnitude: mag 0.6
     Elongation from Sun: 32.47 degrees (evening sky)
     Apparent size: 16.51 arcseconds in angular diameter
     (back to 'Quick Links')

Uranus data:
     Rise: 11:30pm
     Transit 5:17am Jul 14 (Time of highest position in the sky, due South)
     Set: 11:03am Jul 14
     Constellation: Aquarius
     Phase: 99.95% illuminated
     Distance: 19.52358684 AU = 2,920,687,020 km = 1,814,830,798 miles
     Magnitude: mag 5.8
     Elongation from Sun: 122.78 degrees (morning sky)
     Apparent size: 3.61 arcseconds in angular diameter
     (back to 'Quick Links')

Neptune data:
     Rise: 10:21pm
     Transit: 3:34am Jul 14 (Time of highest position in the sky, due South)
     Set: 8:46am Jul 14
     Constellation: Capricornus
     Phase: 99.99% illuminated
     Distance: 29.16252598 AU = 4,362,651,791 km = 2,710,826,179 miles
     Magnitude: mag 7.8
     Elongation from Sun: 149.89 degrees (morning sky)
     Apparent size: 2.34 arcseconds in angular diameter
     (back to 'Quick Links')

Pluto (Dwarf Planet aka Asteroid 134340) data:
     Rise: 6:40pm
     Transit 11:46pm (Time of highest position in the sky, due South)
     Set: 4:52am Jul 14
     Constellation: Sagittarius
     Phase: 100.00% illuminated
     Distance: 30.38962639 AU = 4,546,223,399 km = 2,824,892,289 miles
     Magnitude: mag 14.1
     Elongation from Sun: 154.79 degrees (evening sky)
     Apparent size: 0.11 arcseconds in angular diameter
     (back to 'Quick Links')

General Information - 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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