Astronomical Observing at Fishcreek - Friday 9/11/2009

They just can't accurately predict Ohio weather - not even the Clear Sky Chart! 

We set up under fairly clear skies, except there were some low clouds to the north and north-east.  Several people arrived and did get to see Jupiter with Europa moving behind.  M57 and Albireo were able to be seen before clouds totally obscured the entire sky.  Then, horror of horrors, it began to rain as we were taking down equipment.  Not too hard, fortunately.  No damage done.  All packed and back home by 9:45pm.

We'll try again next Friday, 9/18/2009
 

Click HERE for a printer-friendly version of the information on this page.

Click HERE for general Information you should know about our events - Q&A of Where, When and What.

Tonight we have a third quarter Moon rising at 11:31pm that won't clear the trees to the east of the observing field until after 1:15am.  Jupiter is putting on a show for us with Io and Europa being occulted (moving behind Jupiter) and then emerging from eclipse later.  They will appear, it seems, out of thin air.  It's quite a sight!  Also, we have the colorful double stars, open clusters made up of hundreds of stars, the 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, and galaxies we can observe since the light of the Moon won't drown out the dim light of these distant island universes.

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 fourteenth year!

Quick links:
    Inner Solar System     Outer Solar System

Note: All times are shown in EDT (Eastern Daylight Time (UT-4)) as seen from Stow, Ohio

Longitude:

W 81 25' 38.4"
Latitude: N 41 11' 11.1"
Altitude:

 337m


The following Sun, Moon and planet detail was calculated as it will be
on Friday 9/11/09 at
8:41:54pm EDT (nautical twilight)
Source: Guide8 software available from www.projectpluto.com

Above Horizon Below Horizon Constellation Mag Rises Sets
  Sun Leo -26.7 06:59 19:44
  Mercury Virgo 1.9 08:30 19:58
  Venus Leo -4.0 04:25 18:32
  Mars Gemini 0.9 01:12 16:24
Jupiter   Capricornus -2.8 18:20 04:33
  Saturn Virgo 1.1 07:24 20:03
Uranus   Pisces 5.7 19:47 07:37
Neptune   Capricornus 7.8 18:32 05:03
Pluto   Sagittarius 14.2 15:04 01:03
  Moon Taurus -10.2 23:31 15:39

 

Sun data
 
Rises:

 6:59am

Transits:

 1:22pm - Time of highest position in the sky, due South

Sets:

 7:44pm

Constellation:

Leo

Distance:

1.00648252 AU = 150,567,642 km = 93,558,396 miles = 8.38 light-minutes

Magnitude:

-26.7

Apparent size:

31.78 arcminutes in angular diameter

Twilight ends...

Civil:

 8:09pm - Sun is   6 below the horizon

Nautical:

 8:42pm - Sun is 12 below the horizon

Astronomical:

 9:16pm - Sun is 18 below the horizon

Autumnal Equinox:

Tuesday Sept 22, 2009 at 5:19pm (when Fall officially arrives)

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)

On 9/11/2009 at 8:41:54pm the Sun will be 12 below the west horizon

(back to 'Quick Links')

 

Moon data
 
Rises:

11:31pm

Transits:

  7:36am - Sep 12 (Time of highest position in the sky, due South)

Sets:

  3:39pm - Sep 12

Constellation:

Taurus

Phase:

50.68% illuminated (waning gibbous)

Distance:

0.00250949 AU = 375,415 km = 233,272 miles = 1.25 light-seconds

Magnitude:

-10.2

Apparent size:

31.82 arcminutes in angular diameter

Elongation from Sun:

90.64 (morning sky)

Age:

22d 14h 38m since last New Moon

Prior Phase:

Full Moon on Friday Sep 4, 2009 at 12:03pm

Next Phase:

Last Quarter on Friday Sep 11, 2009 at 10:16pm

Next Lunar eclipse:

Total eclipse (100%) on Sunday Sept 27, 2015 at 10:10pm EDT


On 9/11/2009 at 8:41:54pm the Moon will be 20.2 below the north horizon
but will look like this at low power* in our telescopes when it clears the trees to the east of the observing field at 1:15am...

*How do we change the "power" (magnification) of our telescopes?
Simple!  By changing the eyepiece to one of a longer or shorter focal length.
If the eyepiece is of shorter focal length, the "power" (magnification) is higher,
If he eyepiece is of longer focal length, the "power" (magnification) is lower.
By how much?  Here's the formula:

Magnification =F focal length of telescope objective lens
focal length of eyepiece being used      

Note: All graphics are correct-image representations.  A telescope will reverse this left-right and possibly invert up-down depending on type of equipment being used.

(back to 'Quick Links')

 

Mercury data
 
Rises:

8:30am

Transits:

2:14pm - Time of highest position in the sky, due South

Sets:

7:58pm

Constellation:

Virgo

Phase:

13.75% illuminated

Distance:

0.67276232 AU = 100,643,811 km = 62,537,166 miles = 5.6 light-minutes

Magnitude:

1.9

Apparent size:

10.00 arcseconds in angular diameter

Elongation from Sun:

16.12 (evening sky)

Next maximum elongations...
Morning:

Morning: Tuesday, October 6, 2009 (17 56' 43")

Evening:

Friday, December 18, 2009 (20 17' 43")


On 9/11/2009 at 8:41:54pm Mercury will be 9.3
below the west horizon

(back to 'Quick Links')

 

Venus data
 
Rises:   4:25am
Transits: 11:29am - Time of highest position in the sky, due South
Sets:   6:32pm
Constellation:

Leo

Phase:

85.96% illuminated

Distance:

1.39086704 AU = 208,070,748 km = 129,289,170 miles = 11.59 light-minutes

Magnitude:

-4.0 (extremely bright, visible in the morning before sunrise)

Apparent size:

12.00 arcseconds in angular diameter

Elongation from Sun:

29.78 (morning sky)

Next maximum elongations...
Evening:

Friday, August 20, 2010 (45 57' 59")

Morning:

Saturday, January 8, 2011 (46 57' 24")


On 9/11/2009 at 8:41:54pm Venus will be 21.3 below the northwest horizon


(back to 'Quick Links')

 

Mars data
 
Rises:

1:12am

Transits:

8:48am - Time of highest position in the sky, due South

Sets:

4:24pm

Constellation:

Gemini

Phase:

89.03% illuminated

Distance:

1.53729084 AU = 229,975,436 km = 142,900,113 miles = 12.8 light-minutes

Magnitude:

0.9

Apparent size:

6.09 arcseconds in angular diameter

Elongation from Sun:

68.67 (morning sky)

Dates of Opposition (when Mars is closest to the Earth)

Previous:

Monday Dec 24, 2007 at 2:29pm

Next:

Friday Jan 29, 2010 at 3:21pm

Next close approach:

Friday Jan 29, 2010


On 9/11/2009 at 8:41:54pm Mars will be 25.4 below the north-northwest horizon


No, Mars was *not* be "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

(back to 'Quick Links')

 

Jupiter data
 
Rises:

  6:20pm

Transits:

11:26pm - Time of highest position in the sky, due South

Sets:

  4:33am - Sep 12

Constellation:

Capricornus

Phase:

99.74% illuminated

Distance:

4.14078134 AU = 619,452,072 km = 384,909,677 miles = 34.49 light-minutes

Magnitude:

-2.8

Apparent size:

47.61 arcseconds in angular diameter

Elongation from Sun:

149.29 (evening sky)

Dates of Opposition (when Jupiter is closest to the Earth)

Previous:

Friday Aug 14, 2009 at 1:44pm

Next:

Tuesday Sep 21, 2010 at 7:28am


On 9/11/2009 at 8:41:54pm Jupiter will be 21 above the southeast horizon
In the Jupiter animation (below) beginning at 7:28pm, the frames are separated by ten minutes.
Notice Io being occulted at 7:54pm, Europa being occulted at 8:51pm. Io coming out of eclipse at 10:52pm and Europa coming out of eclipse at 1:11am


Note: All graphics are correct-image representations.  A telescope will reverse this left-right and possibly invert up-down depending on type of equipment being used.

Next transit of the Great Red Spot: Saturday Sep 12, 2009 at 0:12am (
The Red Spot transits about every 10 hours 56 minutes)
GRS longitude: 135.8
Jupiter moons activity tonight:
       Io occultation begins on Friday Sep 11, 2009 at 7:54pm when Jupiter is 14.3 above the horizon (before darkness)
       Europa occultation begins on Friday Sep 11, 2009 at 8:51pm when Jupiter is 22.1 above the horizon
       Io eclipse ends on Friday Sep 11, 2009 at 10:52pm when Jupiter is 32 above the horizon
       Europa eclipse ends on Saturday Sep 12, 2009 at 1:11am when Jupiter is 27.6 above the horizon

(back to 'Quick Links')

 

Saturn data
 
Rises:

7:24am

Transits:

1:44pm - Time of highest position in the sky, due South

Sets:

8:03pm

Constellation:

Virgo

Phase:

100.00% illuminated

Distance:

10.44360552 AU = 1,562,341,148 km = 970,793,794 miles = 1.45 light-hours

Magnitude:

1.1

Apparent size:

15.91 arcseconds in angular diameter

Elongation from Sun:

5.26 (evening sky)

Dates of Opposition (when Saturn is closest to the Earth)

Previous:

Sunday Mar 8, 2009 at 3:44pm

Next:

Sunday Mar 21, 2010 at 8:28pm


On 9/11/2009 at 8:41:54pm Saturn will be 8.2 below the west horizon


Note: All graphics are correct-image representations.  A telescope will reverse this left-right and possibly invert up-down depending on type of equipment being used.

(back to 'Quick Links')

 

Uranus data
 
Rises:

7:47pm

Transits:

1:42am - Sep 12 - Time of highest position in the sky, due South

Sets:

7:37am - Sep 12

Constellation:

Pisces

Phase:

100.00% illuminated

Distance:

19.09598029 AU = 2,856,717,990 km = 1,775,082,286 miles = 2.65 light-hours

Magnitude:

5.7

Apparent size:

3.69 arcseconds in angular diameter

Elongation from Sun:

174.50 (morning sky)

Dates of Opposition (when Uranus is closest to the Earth)

Previous:

Friday Sep 12, 2008 at 10:14pm

Next:

Thursday Sep 17, 2009 at 5:34am


On 9/11/2009 at 8:41:54pm Uranus will be 9.1 above the east horizon

(back to 'Quick Links')

 

Neptune data
 
Rises:

6:32pm

Transits:

11:47pm - Time of highest position in the sky, due South

Sets:

5:03am - Sep 12

Constellation:

Capricornus

Phase:

99.99% illuminated

Distance:

29.1123179 AU = 4,355,140,768 km = 2,706,159,045 miles = 4.04 light-hours

Magnitude:

7.8

Apparent size:

2.35 arcseconds in angular diameter

Elongation from Sun:

155.00 (evening sky)

Dates of Opposition (when Neptune is closest to the Earth)

Previous:

Monday Aug 17, 2009 at 4:47pm

Next:

Friday Aug 20, 2010 at 5:59am


On 9/11/2009 at 8:41:54pm Neptune will be 20.2 above the east-southeast horizon


(back to 'Quick Links')

 

Pluto (Dwarf Planet aka Asteroid 134340) data
 
Rises:

3:03pm

Transits:

8:03pm - Time of highest position in the sky, due South

Sets:

1:03am - Sep 12

Constellation:

Sagittarius

Phase:

99.98% illuminated

Distance:

31.49460534 AU = 4,711,525,897 km = 2,927,606,500 miles = 4.37 light-hours

Magnitude:

14.2

Apparent size:

0.10 arcseconds in angular diameter

Elongation from Sun:

101.20 (evening sky)

Dates of Opposition (when Pluto is closest to the Earth)

Previous:

Tuesday Jun 23, 2009 at 3:49am

Next:

Friday Jun 25, 2010 at 2:59pm


On 9/11/2009 at 8:41:54pm Pluto will be 30.2 above the south horizon

(back to 'Quick Links')


Inner Solar System - the Sun, Mercury, Venus and Earth
(Created using Software Bisque's
TheSky software)


(back to 'Quick Links')
 

Outer Solar System - the Sun, Mars, Jupiter, Uranus, Neptune and Pluto
(Created using Software Bisque's
TheSky software)
Notice that Jupiter and Neptune are now past opposition and that Uranus will be at opposition on Sept 17th



(back to 'Quick Links')
 

Click HERE for a printer-friendly version of the information on this page.

Click HERE for 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"

(back to 'Quick Links')

Back to home page

 

Web hosting generously provided by