Astronomical Observing at Fishcreek Observing Site
Friday - 6/25/2010  8:05pm
 

Report:

Fantastic night!  Despite the full Moon, we had great views.  Lots of telescopes were available for our use thanks to members of the ACA.

Saturn, Mars and Venus were all seen, as well as hundreds of features on the full Moon.

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Tonight, we have a very bright full Moon with us the entire night.  While this phase isn't the best for viewing detail in the craters on or near the terminator - the line separating lunar night from day, a wealth of features can still be seen. Faint DSOs (Deep Space Objects) are probably not going to be visible due to the Moon, but Saturn will be beautiful with its rings still nearly edge-on and several moons visible. Also, we have Venus showing a gibbous phase, and Mars growing smaller every night. 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.  Galaxies probably won't be visible this evening due to the brightness of the full Moon.

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 fifteenth year!

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

Longitude:

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

 337m

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
6/25/2010 at 10:19:32pm EDT (nautical twilight)
Source: Guide8 software available from www.projectpluto.com

Above Horizon Below Horizon Constellation Mag Rises Sets
  Sun Gemini -26.7 05:50 21:06
  Mercury Gemini -2.0 05:31 20:55
Venus   Cancer -4.0 08:59 23:30
Mars   Leo 1.3 11:21 00:34
  Jupiter Pisces -2.4 01:13 13:22
Saturn   Virgo 1.1 12:52 01:22
  Uranus Pisces 5.8 01:07 13:14
  Neptune Aquarius 7.9 23:50 10:32
Pluto   Sagittarius 14.2 20:27 06:24
Moon   Sagittarius -12.6 20:37 05:56

Quick links:
    Inner Solar System     Outer Solar System

Sun data
 
Rises:

5:50am

Transits:

1:28pm - Time of highest position in the sky, due South

Sets:

9:06pm

Constellation:

Gemini

Distance:

1.0164712 AU = 152,061,927 km = 94,486,902 miles = 8.47 light-minutes

Magnitude:

-26.7

Apparent size:

31.47 arcminutes in angular diameter

Twilight ends...

Civil:

  9:36pm - Sun is   6 below the horizon

Nautical:

10:20pm - Sun is 12 below the horizon

Astronomical:

11:11pm - Sun is 18 below the horizon

Summer began:

at the Summer Solstice which occurred on Monday Jun 21, 2010 at 7:29am

Fall begins:

at the Autumnal Equinox which will occur on Wednesday Sep 22, 2010 at 11:10pm

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 6/25/2010 at 10:19:32pm the Sun will be 12 below the northwest horizon

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Moon data
 
Rises:

8:37pm

Transits:

1:15am - Jun 26 (Time of highest position in the sky, due South)

Sets:

5:56am - Jun 26

Constellation:

Sagittarius

Phase:

99.86% illuminated (waxing gibbous)

Distance:

0.00262311 AU = 392,412 km = 243,834 miles = 1.31 light-seconds

Magnitude:

-12.6

Apparent size:

30.44 arcminutes in angular diameter

Elongation from Sun:

175.63 (evening sky)

Age:

13d 15h 7m since last New Moon

Prior Phase:

First Quarter on Saturday Jun 19, 2010 at 12:30am

Next Phase:

Full Moon on Saturday Jun 26, 2010 at 7:30am

Next Lunar eclipse:

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


On 6/25/2010 at 10:19:32pm the Moon will be 12.5 above the southeast horizon
and will look like this in our telescopes at very low power*

*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.

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Mercury data
 
Rises:

5:31am

Transits:

1:13pm - Time of highest position in the sky, due South

Sets:

8:55pm

Constellation:

Gemini

Phase:

99.19% illuminated

Distance:

1.3176669 AU = 197,120,162 km = 122,484,792 miles = 10.98 light-minutes

Magnitude:

-2.0

Apparent size:

5.10 arcseconds in angular diameter

Elongation from Sun:

3.10 (morning sky)

Next maximum elongations...
Evening:

Saturday, August 7, 2010 (27 22' 00")

Morning:

Sunday, September 19, 2010 (17 52' 13")


On 6/25/2010 at 10:19:32pm Mercury will be 12.8
below the northwest horizon

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Venus data
 
Rises:

  8:59am

Transits:

  4:15pm - Time of highest position in the sky, due South

Sets:

11:30pm

Constellation:

Cancer

Phase:

72.62% illuminated

Distance:

1.11336163 AU = 166,556,529 km = 103,493,430 miles = 9.27 light-minutes

Magnitude:

-4.0 (extremely bright, the brightest thing in the evening sky except for the Moon)

Apparent size:

14.99 arcseconds in angular diameter

Elongation from Sun:

39.26 (evening sky)

Next maximum elongations...
Evening:

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

Morning:

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


On 6/25/2010 at 10:19:32pm Venus will be 11.4 above the west horizon
and will look like this in our telescopes at high power...


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Mars data
 
Rises:

11:21am

Transits:

  5:57pm - Time of highest position in the sky, due South

Sets:

  0:34am - Jun 26

Constellation:

Leo

Phase:

91.12% illuminated

Distance:

1.75696812 AU = 262,838,690 km = 163,320,392 miles = 14.63 light-minutes

Magnitude:

1.3

Apparent size:

5.33 arcseconds in angular diameter

Elongation from Sun:

65.78 (evening 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.


On 6/25/2010 at 10:19:32pm Mars will be 24.1 above the west-southwest 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

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Jupiter data
 
Rises:

1:13am - Jun 26

Transits:

7:18am - Jun 26 - Time of highest position in the sky, due South

Sets:

1:22pm - Jun 26

Constellation:

Piscess

Phase:

98.94% illuminated

Distance:

4.82482047 AU = 721,782,868 km = 448,495,087 miles = 40.19 light-minutes

Magnitude:

-2.4

Apparent size:

40.86 arcseconds in angular diameter

Elongation from Sun:

92.20 (morning 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


Next transit of the Great Red Spot: Saturday Jun 26, 2010 at 3:44am (The Red Spot transits about every 9 hours 56 minutes)
GRS longitude: 144.8
Jupiter moons activity (during darkness):
        None

On 6/25/2010 at 10:19:32pm Jupiter will be 32.3 below the northeast horizon

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Saturn data
 
Rises:

12:52pm

Transits:

  7:07pm - Time of highest position in the sky, due South

Sets:

  1:22am - Jun 26

Constellation:

Virgo

Phase:

99.72% illuminated

Distance:

9.58048707 AU = 1,433,220,466 km = 890,561,921 miles = 1.33 light-hours

Magnitude:

1.1

Apparent size:

17.35 arcseconds in angular diameter

Elongation from Sun:

84.01 (evening sky)

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

Previous:

Sunday Mar 21, 2010 at 8:28pm

Next:

Sunday Apr 3, 2011 at 7:48pm


On 6/25/2010 at 10:19:32pm Saturn will be 32.3 below the southwest horizon
and will look like this in our telescopes at high power...

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:

1:07am - Jun 26

Transits:

7:11am - Jun 26 - Time of highest position in the sky, due South

Sets:

1:14pm - Jun 26

Constellation:

Pisces

Phase:

99.94% illuminated

Distance:

20.00006179 AU = 2,991,966,658 km = 1,859,121,913 miles = 2.78 light-hours

Magnitude:

5.8

Apparent size:

3.52 arcseconds in angular diameter

Elongation from Sun:

93.86 (morning sky)

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

Previous:

Thursday Sep 17, 2009 at 5:34am

Next:

Tuesday Sep 21, 2010 at 12:51pm


On 6/25/2010 at 10:19:32pm Uranus will be 31.4 below the northeast horizon

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Neptune data
 
Rises:

11:50pm

Transits:

  5:11am - Jun 26 - Time of highest position in the sky, due South

Sets:

10:32am - Jun 26

Constellation:

Aquarius

Phase:

99.98% illuminated

Distance:

29.41251274 AU = 4,400,049,277 km = 2,734,063,899 miles = 4.08 light-hours

Magnitude:

7.9

Apparent size:

2.32 arcseconds in angular diameter

Elongation from Sun:

125.88 (morning 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 6/25/2010 at 10:19:32pm Neptune will be 18.1 below the east horizon

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Pluto (Dwarf Planet aka Asteroid 134340) data
 
Rises:

8:27pm

Transits:

1:25am - Jun 26 - Time of highest position in the sky, due South

Sets:

6:24am - Jun 26

Constellation:

Sagittarius

Phase:

100.00% illuminated

Distance:

30.84243382 AU = 4,613,962,426 km = 2,866,983,369 miles = 4.28 light-hours

Magnitude:

14.2

Apparent size:

0.11 arcseconds in angular diameter

Elongation from Sun:

174.87 (evening sky)

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

Previous:

Friday Jun 25, 2010 at 2:59pm

Next:

Tuesday Jun 28, 2011 at 1:23am


On 6/25/2010 at 10:19:32pm Pluto will be 16.5 above the east-southeast horizon

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


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Outer Solar System - the Sun, Mars, Jupiter, Uranus, Neptune and Pluto
(Created using Software Bisque's
TheSky software)
Notice that Pluto is exactly at opposition today (Friday June 25, 2010) at 2:59pm




(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

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

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