Astronomical Observing from Fishcreek Observing Site
  Friday 8/5/2011 at 9:46:08pm (nautical twilight)
   This page last updated on Friday 7/30/2011 at 2:00pm

                    Sunset:  8:41pm
       Civil twilight ends:  9:08pm
    Nautical twilight ends:  9:46pm
Astronomical twilight ends: 10:27pm

Moon Phase: 45.46% illuminated (waxing crescent)
      Rise: 1:25pm
       Age: 6d 7h 11m since last New Moon

We hope to see you here for a night under the stars - now in our sixteenth year!
Tonight, we'll have a beautiful first quarter Moon.  This is the perfect time to see all kinds of lunar detail, especially at or near the terminator - the line separating lunar night from day. It will set at 11:48pm which will provide us with a dark sky to see the dim DSOs (Deep Space Objects) that we love to view. We'll have beautiful Saturn with its magnificent rings and moons, colorful double stars and open clusters made up of hundreds of stars that will look beautiful; the globular clusters will be fantastic as will the planetary nebula formed by dying stars. The diffuse nebula and emission nebula where stars are being born will be visible. Galaxies will be available to us, but difficult unless the night is perfectly clear.

How about the planets...which ones can we see tonight? 

    Sun is obviously unavailable to us, it IS night time after all ;^)
    Mercury is setting 24 minutes after sunset and is now totally lost in the glare of the setting sun
    Venus is now rising only 17 minutes before sunrise and now totally lost in the glare of the Sun
    Earth is what you'll be standing on as you look up. ;^)
    Mars is a morning object now, rising more than 3 hours before sunrise
    Jupiter is a late-night object rising at 12:03am
    Saturn is visible in the evening and night. It sets at 11:15pm
    Uranus rises at 10:35pm
    Neptune rises at 9:14pm
 
  Pluto rises at sunset, but so incredibly small and dim that we can't see a thing in our telescopes!
    Moon is at first quarter phase and sets at 11:48pm this evening

Click here for a list of DeepSky Objects that will be available to us this session.
All times are shown in EDT (Eastern Daylight Time (UT-4)) as seen from Stow, Ohio
Longitude: W 81 25' 38.4"
 Latitude: N41 11' 11.1"
 Altitude: 337m

The following Sun, Moon and planet detail was calculated as it
will be on Friday 8/5/2011 at 9:46:08pm (nautical twilight)
Source: Guide8 software available from www.projectpluto.com

ABOVE HORIZON:
Object       Mag    Const     Rise     Set
Saturn       0.9     Vir     11:24   23:15
Neptune      7.8     Aqr     21:14   07:59
Pluto       14.2     Sgr     17:54   03:46
Moon       -10.0     Vir     13:25   23:48

BELOW HORIZON:
Object       Mag    Const     Rise     Set
Sun        -26.7     Cnc     06:21   20:41
Mercury      2.0     Leo     08:05   21:05
Venus       -3.9     Cnc     06:04   20:36
Mars         1.4     Gem     02:59   18:14
Jupiter     -2.5     Ari     00:03   13:50
Uranus       5.8     Psc     22:35   10:52

Sun data:
     Rise: 6:21am
     Transit: 1:31pm (Time of highest position in the sky, due South)
     Sets: 8:41pm
     Constellation: Cancer
     Distance: 1.01441051 AU = 151,753,653 km = 94,295,349 miles = 8.45 light-minutes
     Magnitude: -26.7
     Apparent size: 31.53 arcminutes in angular diameter

     Civil twilight ends at: 9:08pm ( When the Sun is 6 below the horizon )
     Nautical twilight ends at: 9:46pm ( When the Sun is 12 below the horizon )
     Astronomical twilight ends at: 10:27pm ( When the Sun is 18 below the horizon )

     Summer began at the Summer Solstice which occurred on Tuesday Jun 21, 2011 at 1:17pm
     Fall begins at the Autumnal Equinox which will occur on Friday Sep 23, 2011 at 5:05am

     Next Solar Eclipse: Partial eclipse (>80%) on Monday August 21, 2017 2:30pm EDT
     Next TOTAL Solar Eclipse: Monday April 8, 2024 at 3:15pm
     On 8/5/2011 at 9:46:08pm the Sun will be 12 below the west-northwest horizon

Moon data:
     Rise: 1:25pm
     Transit: 6:40pm (Time of highest position in the sky, due South)
     Sets: 11:48pm
     Constellation: Virgo
     Phase:  45.46% illuminated (waxing crescent)
     Distance: 0.0024633 AU = 368,504 km = 228,978 miles = 1.23 light-seconds
     Magnitude: -10.0
     Apparent size: 32.42 arcminutes in angular diameter
     Elongation from Sun: 84.65 (evening sky)
     Age: 6d 7h 11m since last New Moon
     Prior Phase: New Moon on Saturday Jul 30, 2011 at 2:40pm
      Next Phase: First Quarter on Saturday Aug 6, 2011 at 7:08am
     Next Lunar eclipse: Total eclipse (100%) on Sunday Sept 27, 2015 at 10:10pm EDT
     On 8/5/2011 at 9:46:08pm the Moon will be 17.1 above the south-southwest horizon

Mercury data:
     Rise: 8:05am
     Transit: 2:35pm (Time of highest position in the sky, due South)
     Sets: 9:05pm
     Constellation: Leo
     Phase:  14.13% illuminated
     Distance: .64125497 AU = 95,930,378 km = 59,608,374 miles = 5.34 light-minutes
     Magnitude: 2.0
     Apparent size: 10.49 arcseconds in  angular diameter
     Elongation from Sun: 18.03 (evening sky)
     Next maximum elongations...
          Morning: Saturday, September 3, 2011 (18 06' 39")
          Evening: Monday, November 14, 2011 (22 44' 52")
     On 8/5/2011 at 9:46:08pm Mercury will be 8.5 below the west horizon

Venus data:
     Rise: 6:04am
     Transit: 1:20pm (Time of highest position in the sky, due South)
     Sets: 8:36pm
     Constellation: Cancer
     Phase:  99.86% illuminated
     Distance: 1.72937576 AU = 258,710,932 km = 160,755,522 miles = 14.4 light-minutes
     Magnitude: -3.9
     Apparent size: 9.65 arcseconds in ngular diameter
     Elongation from Sun: 3.07 (morning sky)
     Next maximum elongations...
          Evening: Tuesday, March 27, 2012 (46 02' 27")
          Morning: Wednesday, August 15, 2012 (45 48' 10")
     On 8/5/2011 at 9:46:08pm Venus will be 12.1 below the west-northwest horizon

Mars data:
     Rise: 2:59am
     Transit: 10:37am (Time of highest position in the sky, due South)
     Sets: 6:14pm
     Constellation: Gemini
     Phase:  94.76% illuminated
     Distance: 2.10971154 AU = 315,608,354 km = 196,109,942 miles = 17.57 light-minutes
     Magnitude: 1.4
     Apparent size: 4.43 arcseconds in angular diameter
     Elongation from Sun: 41.50 (morning sky)
     Dates of Opposition (when Mars is closest to Earth)
        Previous: Friday Jan 29, 2010 at 2:21pm.  Distance: 99,400,435 km.  Size: 14.08 arcseconds.
            Next: Saturday Mar 3, 2012 at 3:52pm.  Distance: 100,839,728 km.  Size: 13.88 arcseconds.
     On 8/5/2011 at 9:46:08pm Mars will be 24 below the north-northwest horizon

     Question: Will Mars be "as big as a Full Moon on August 27!" ???
       Answer: ABSOLUTELY NOT!!!

     Question: Will there be "Two Full Moons in the Sky!" ???
       Answer: ABSOLUTELY NOT!!!

     Mars was the closest in recorded history on August 27, but that was only in 2003, not every year!
     At that time, it appeared to be 1/75th the apparent diameter of the Moon!  NOT the "same size as the Full Moon".

     Please check these respected sites for their stories on the "Mars hoax" by clicking on the links below:
         http://www.skyandtelescope.com/observing/home/8708182.html
         http://www.snopes.com/science/astronomy/brightmars.asp
         http://www.hoax-slayer.com/mars-earth-close.html
         http://www.universetoday.com/2007/07/25/will-the-mars-look-as-big-as-the-moon-on-august-27-nope/

Jupiter data:
     Rise: 0:03am - Aug 6
     Transit: 6:56am - Aug 6 (Time of highest position in the sky, due South)
     Sets: 1:50pm - Aug 6
     Constellation: Aries
     Phase:  98.95% illuminated
     Distance: 4.78076338 AU = 715,192,022 km = 444,399,725 miles = 39.82 light-minutes
     Magnitude: -2.5
     Apparent size: 41.24 arcseconds in angular diameter
     Elongation from Sun: 93.90 (morning sky)
     Dates of Opposition (when Jupiter is closest to Earth)
        Previous: Tuesday Sep 21, 2010 at 7:28am
            Next: Friday Oct 28, 2011 at 9:37pm
     On 8/5/2011 at 9:46:08pm Jupiter will be 23.1 below the northeast horizon
 
     Next transit of the Great Red Spot: Saturday Aug 06, 2011 at 0:35am (The Red Spot transits about every 9 hours 56 minutes)
     GRS longitude: 163.4
     Jupiter satellite events (during darkness):
         Europa eclipse begins on Saturday Aug 06, 2011 at 0:41am when Jupiter is 5.6 above the horizon
         Europa eclipse ends on Saturday Aug 06, 2011 at 3:12am when Jupiter is 33.9 above the horizon
         Europa occultation begins on Saturday Aug 06, 2011 at 3:31am when Jupiter is 37.4 above the horizon
         Europa occultation ends on Saturday Aug 06, 2011 at 5:54am when Jupiter is 59 above the horizon

Saturn data:
     Rise: 11:24am
     Transit: 5:19pm (Time of highest position in the sky, due South)
     Sets: 11:15pm
     Constellation: Virgo
     Phase:  99.79% illuminated
     Distance: 10.12496564 AU = 1,514,673,301 km = 941,174,367 miles = 1.41 light-hours
     Magnitude: 0.9
     Apparent size: 16.41 arcseconds in angular diameter
     Elongation from Sun: 59.48 (evening sky)
     Dates of Opposition (when Saturn is closest to Earth)
        Previous: Sunday Apr 3, 2011 at 7:48pm
            Next: Sunday Apr 15, 2012 at 2:19pm
     On 8/5/2011 at 9:46:08pm Saturn will be 15.3 above the west-southwest horizon

Uranus data:
     Rise: 10:35pm
     Transit: 4:44am - Aug 6 (Time of highest position in the sky, due South)
     Sets: 10:52am - Aug 6
     Constellation: Pisces
     Phase:  99.96% illuminated
     Distance: 19.42816851 AU = 2,906,412,641 km = 1,805,961,110 miles = 2.7 light-hours
     Magnitude: 5.8
     Apparent size: 3.63 arcseconds in angular diameter
     Elongation from Sun: 129.02 (morning sky)
     Dates of Opposition (when Uranus is closest to Earth)
        Previous: Tuesday Sep 21, 2010 at 12:51pm
            Next: Sunday Sep 25, 2011 at 8:07pm
     On 8/5/2011 at 9:46:08pm Uranus will be 10.5 below the east-northeast horizon

Neptune data:
     Rise: 9:14pm
     Transit: 2:36am - Aug 6 (Time of highest position in the sky, due South)
     Sets: 7:59am - Aug 6
     Constellation: Aquarius
     Phase:  100.00% illuminated
     Distance: 29.03402785 AU = 4,343,428,744 km = 2,698,881,531 miles = 4.03 light-hours
     Magnitude: 7.8
     Apparent size: 2.35 arcseconds in angular diameter
     Elongation from Sun: 163.32 (morning sky)
     Dates of Opposition (when Neptune is closest to Earth)
        Previous: Friday Aug 20, 2010 at 5:59am
            Next: Monday Aug 22, 2011 at 7:18pm
     On 8/5/2011 at 9:46:08pm Neptune will be 4.6 above the east horizon

Pluto (Dwarf Planet aka Asteroid 134340) data:
     Rise: 5:54pm
     Transit: 10:50pm (Time of highest position in the sky, due South)
     Sets: 3:46am - Aug 6
     Constellation: Sagittarius
     Phase:  99.99% illuminated
     Distance: 31.26959245 AU = 4,677,864,447 km = 2,906,690,245 miles = 4.34 light-hours
     Magnitude: 14.2
     Apparent size: 0.11 arcseconds in angular diameter
     Elongation from Sun: 141.79 (evening sky)
     Dates of Opposition (when Pluto is closest to Earth)
        Previous: Tuesday Jun 28, 2011 at 1:23am
            Next: Friday Jun 29, 2012 at 11:03am
     On 8/5/2011 at 9:46:08pm Pluto will be 28 above the south-southeast horizon
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