This event was CANCELLED due to
heavy cloud cover & threat of thunderstorms

We'll try again next Friday - 8/5/2011
.

Astronomical Observing at the Fishcreek Observing Site
Friday - 7/29/2011  10:00 pm

Click here for event status

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.

Click here for satellite passes this evening

Click here for chart of Solar/Lunar/planet availability for tonight. 

Once again, we're Moon-free tonight since it sets at 7:56pm this afternoon.  You know what that means: the dim DSOs (Deep Space Objects) that we love to view will again be visible.  Detail on the Moon will be excellent, but not until very late tonight.  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.

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

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

    Sun is obviously unavailable to us, it will be night time after all. 
    Mercury is setting 50 minutes after sunset and now lost in the glare of the setting sun
    Venus is now rising only 26 minutes before sunrise and now, like Mercury, 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 3 hours before sunrise.
    Jupiter is a late-night object rising at 12:29am.
    Saturn is visible in the evening and night.  It sets at 11:41pm.
    Uranus rises at 11:03pm.
    Neptune rises at 9:42pm.
 
  Pluto rises before sunset, but so incredibly small and dim that we can't see a thing in our telescopes!  We can show you where it is.  OK, OK...if you want to try to see it, we'll try.  Don't expect to see anything, though!
    Moon sets at 7:56pm this afternoon and will be new in 16 hours.  We're moon-free tonight.


Click here for additional information on the planets not listed in the detail below.

Click here for a list of constellations we can see tonight before midnight.

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

- - - - - - - Our location - - - - - - -

Longitude:

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

 337m

- - - - - Click here for map - - - - -

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

The following Sun, Moon and planet detail was calculated as it will be
on Friday 7/29/2011 at 9:55:46pm (nautical twilight)

Source: Guide8 software available from www.projectpluto.com

Above Horizon Below Horizon Constellation Mag Rises Sets
  Sun Cancer -26.7 06:14 20:49
  Mercury Leo 1.1 08:26 21:39
  Venus Cancer -3.9 05:48 20:36
  Mars Taurus 1.4 03:07 18:21
  Jupiter Aries -2.4 00:29 14:14
Saturn   Virgo 0.9 11:49 23:41
  Uranus Pisces 5.8 23:03 11:21
  Neptune Aquarius 7.8 21:42 08:27
Pluto   Sagittarius 14.2 18:22 04:15
  Moon Gemini -4.6 04:57 19:56
Click here for information on the planets such as orbital and rotational periods, velocities, distances, etc. not listed in the detail provided below.

.

Quick links:
    Inner Solar System     Outer Solar System

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Sun data
 
Rises:

6:14am

Transits:

1:32pm - Time of highest position in the sky, due South

Sets:

8:49pm

Constellation:

Cancer

Distance:

1.01534253 AU = 151,893,080 km = 94,381,985 miles = 8.46 light-minutes

Magnitude:

-26.7

Apparent size:

31.50 arcminutes in angular diameter

Twilight ends...

Civil:

  9:17pm - Sun is   6 below the horizon

Nautical:

  9:56pm - Sun is 12 below the horizon

Astronomical:

10:39pm - 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 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 7/29/2011 at 9:55:46pm the Sun will be 12 below the west-northwest horizon
Below is the current image of the Sun in heavily-filtered white light updated each morning on the SOHO site.
Notice the graphic below the image that shows the relative size of Jupiter and Earth compared to the Sun:
Never EVER point your telescope at the Sun!!!  Instantaneous and permanent eye damage will result!!!
Very special equipment is required to provide an image like this...don't try this at home.


Click here for additional data on the Sun

(back to 'Quick Links')

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Moon data
 
Rises:

  4:57am

Transits:

12:31pm (Time of highest position in the sky, due South)

Sets:

  7:56pm

Constellation:

Gemini

Phase:

0.79% illuminated (waning crescent)

Distance:

0.00251536 AU = 376,292 km = 233,817 miles = 1.26 light-seconds

Magnitude:

-4.6

Apparent size:

31.75 arcminutes in angular diameter

Elongation from Sun:

10.19 (morning sky)

Age:

28d 17h 2m since last New Moon

Prior Phase:

Last Quarter on Saturday Jul 23, 2011 at 1:02am

Next Phase:

New Moon on Saturday Jul 30, 2011 at 2:40pm

Next Lunar eclipse:

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


On 7/29/2011 at 9:55:46pm the Moon will be 19.2 below the northwest horizon
and would look like this in our telescopes at low power* an hour before it sets, if not lost in the glare of the setting sun...


*
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 (or mirror)
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.

Click here for additional data on the Moon

(back to 'Quick Links')

.

Mercury data
 
Rises:

8:26am

Transits:

3:03pm - Time of highest position in the sky, due South

Sets:

9:39pm

Constellation:

Leo

Phase:

27.32% illuminated

Distance:

0.71626591 AU = 107,151,855 km = 66,581,077 miles = 5.97 light-minutes

Magnitude:

1.1

Apparent size:

9.39 arcseconds in angular diameter

Elongation from Sun:

24.07 (evening sky)

Next maximum elongations...
Morning:

Saturday, September 3, 2011 (18 06' 39")

Evening:

Monday, November 14, 2011 (22 44' 52")


On 7/29/2011 at 9:55:46pm Mercury will be 4.2 below the west horizon

Click here for additional data on Mercury

(back to 'Quick Links')

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Venus data
 
Rises:

5:48am

Transits:

1:12pm - Time of highest position in the sky, due South

Sets:

8:36pm

Constellation:

Cancer

Phase:

99.64% illuminated

Distance:

1.72510184 AU = 258,071,562 km = 160,358,236 miles = 14.37 light-minutes

Magnitude:

-3.9 (extremely bright, the brightest thing in the morning sky except for the Moon)

Apparent size:

9.67 arcseconds in angular diameter

Elongation from Sun:

4.88 (morning sky)

Next maximum elongations...
Evening:

Tuesday, March 27, 2012 (46 02' 27")

Morning:

Wednesday, August 15, 2012 (45 48' 10")


On 7/29/2011 at 9:55:46pm Venus will be 13.1 below the west-northwest horizon

Click here for additional data on Venus

(back to 'Quick Links')

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Mars data
 
Rises:

  3:07am

Transits:

10:44am - Time of highest position in the sky, due South

Sets:

  6:21pm

Constellation:

Taurus

Phase:

95.12% illuminated

Distance:

2.13611236 AU = 319,557,861 km = 198,564,052 miles = 17.79 light-minutes

Magnitude:

1.4

Apparent size:

4.38 arcseconds in angular diameter - less than 1/500th the apparent diameter of the Moon!

Elongation from Sun:

39.50 (morning sky)

Dates of Opposition (when Mars is closest to the 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.

Click here:

For a table of close encounters with Mars from 1969 to 2052


On 7/29/2011 at 9:55:46pm Mars will be 24.2 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 1/75
th 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:

    Sky & Telescope

   
Snopes.com

    Hoax-slayer

    Universe Today

Click here for additional data on Mars

(back to 'Quick Links')

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Jupiter data
 
Rises:

0:29am - Jul 30

Transits:

7:22am - Jul 30 - Time of highest position in the sky, due South

Sets:

2:14pm - Jul 30

Constellation:

Aries

Phase:

98.94% illuminated

Distance:

4.88732028 AU = 731,132,707 km = 454,304,808 miles = 40.71 light-minutes

Magnitude:

-2.4

Apparent size:

40.34 arcseconds in angular diameter

Elongation from Sun:

87.82 (morning sky)

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

Previous:

Tuesday Sep 21, 2010 at 7:28am

Next:

Friday Oct 28, 2011 at 9:37pm


Next transit of the Great Red Spot: Friday Jul 29, 2011 at 11:48pm (The Red Spot transits about every 9 hours 56 minutes)
GRS longitude: 163.2
Jupiter moons activity (during darkness):
        Europa eclipse ends on Saturday Jul 30, 2011 at 0:37am when Jupiter is 0.2 above the horizon
        Europa occultation begins on Saturday Jul 30, 2011 at 0:56am when Jupiter is 3.7 above the horizon
        Europa occultation ends on Saturday Jul 30, 2011 at 3:20am when Jupiter is 30.6 above the horizon

On 7/29/2011 at 9:55:46pm Jupiter will be 25.2 below the north-northeast horizon

Click here for additional data on Jupiter

(back to 'Quick Links')

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Saturn data
 
Rises:

11:49am

Transits:

  5:45pm - Time of highest position in the sky, due South

Sets:

11:41pm

Constellation:

Virgo

Phase:

99.77% illuminated

Distance:

10.02189706 AU = 1,499,254,460 km = 931,593,543 miles = 1.39 light-hours

Magnitude:

0.9

Apparent size:

16.58 arcseconds in angular diameter

Elongation from Sun:

65.63 (evening sky)

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

Previous:

Sunday Apr 3, 2011 at 7:48pm

Next:

Sunday Apr 15, 2012 at 2:19pm


On 7/29/2011 at 9:55:46pm Saturn will be 18.3 above the west-southwest horizon
and will look like this in our telescopes at high power.
Notice that all of Saturn's visible moons, except for Japetus, are on the same side of the planet.
Japetus is considerably farther away and to Saturn's lower left (not pictured in this graphic).

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.

Click here for additional data on Saturn

(back to 'Quick Links')

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Uranus data
 
Rises:

11:03pm

Transits:

  5:12am - Jul 30 - Time of highest position in the sky, due South

Sets:

11:21am - Jul 30

Constellation:

Pisces

Phase:

99.95% illuminated

Distance:

19.52313158 AU = 2,920,618,913 km = 1,814,788,479 miles = 2.71 light-hours

Magnitude:

5.8

Apparent size:

3.61 arcseconds in angular diameter

Elongation from Sun:

122.20 (morning sky)

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

Previous:

Tuesday Sep 21, 2010 at 12:51pm

Next:

Sunday Sep 25, 2011 at 8:07pm


On 7/29/2011 at 9:55:46pm Uranus will be 13.8 below the east-northeast horizon

Click here for additional data on Uranus

(back to 'Quick Links')

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Neptune data
 
Rises:

  9:42pm

Transits:

  3:05am - Jul 30 - Time of highest position in the sky, due South

Sets:

  8:27am - Jul 30

Constellation:

Aquarius

Phase:

100.00% illuminated

Distance:

29.07385315 AU = 4,349,386,524 km = 2,702,583,524 miles = 4.04 light-hours

Magnitude:

7.8

Apparent size:

2.35 arcseconds in angular diameter

Elongation from Sun:

156.45 (morning sky)

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

Previous:

Friday Aug 20, 2010 at 5:59am

Next:

Monday Aug 22, 2011 at 7:18pm


On 7/29/2011 at 9:55:46pm Neptune will be 1.3 below the east horizon

Click here for additional data on Neptune

(back to 'Quick Links')

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Pluto (Dwarf Planet aka Asteroid 134340) data
 
Rises:

  6:22pm

Transits:

11:18pm - Time of highest position in the sky, due South

Sets:

  4:15am - Jul 30

Constellation:

Sagittarius

Phase:

99.99% illuminated

Distance:

31.19836207 AU = 4,667,208,535 km = 2,900,068,968 miles = 4.33 light-hours

Magnitude:

14.2

Apparent size:

0.11 arcseconds in angular diameter

Elongation from Sun:

148.55 (evening sky)

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

Previous:

Tuesday Jun 28, 2011 at 1:23am

Next:

Friday Jun 29, 2012 at 11:03am


On 7/29/2011 at 9:55:46pm Pluto will be 26.9 above the south-southeast horizon

Click here for additional data on Pluto

(back to 'Quick Links')


Inner Solar System - the Sun, Mercury, Venus, Earth and Mars on 7/29/2011
(Created using Software Bisque's
TheSky software)
Mercury is setting 50 minutes after sunset and is lost in the glare of the setting sun.  It will reach inferior conjunction on Aug 17, 2011 at 1:34:30am
Venus is now lost in the glare of the rising sun and will reach superior conjunction on Aug 16, 2011 at 1:29:05am
Mars reached conjunction on Feb 4, 2011 and was 220,700,000 miles away.  It's now getting closer and will be closest on 3/3/2012

(back to 'Quick Links')

Outer Solar System - the Sun, Jupiter, Uranus, Neptune and Pluto on 7/29/2011
(Created using Software Bisque's
TheSky software)
The Earth is catching up with Jupiter which will reach western quadrature on Aug 1, 2011
Saturn reached eastern quadrature on July 3, 2011 and is now visible until it sets at 11:41pm
Uranus will reach western quadrature on July 26, 2011 and rises at 11:03pm
Neptune reached western quadrature on May 22, 2011 and rises at 9:42pm
Pluto's orbit can be seen to be extremely eccentric (non-circular) and tilted to the plane of the ecliptic.  It reached opposition on June 28, 2011

(back to 'Quick Links')



Click here for event status

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.

Click here for satellite passes this evening

Click here for chart of Solar/Lunar/planet availability for tonight. 

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

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