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Eugene Lanning
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 Project Jupiter
 XIII-F. Practice JD estimating sessions

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Abstract
I. Purpose
II. Background
III. Orbits
IV. Period  Determination
V. Methods
VI. Kepler's Laws
VII. Observing Suggestions
VIII. Data Gathering
IX. Data Processing
X. Observer's Data Results
XI. Other Quad-A Results
XII. Conclusions

This Project Jupiter Report was prepared by
Mizar Consulting
Eugene A. Lanning
130 Hillside Terrace
Nebraska City, NE
68410-3740
 ealanni@alltel.net
Member of AAAA

AAAA
The American Association of Amateur Astronomers
P.O. Box 7981
Dallas, TX
75209-0981
e-Mail:
aaaa@astromax.com
www.AstroMax.com
Project Jupiter

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XIII. Attachments

Attachment F: Practice JD estimating sessions

Estimate the spacings for these Jupiter-moon separations. For this practice, do not use a ruler, as there will not be one in your view in the eyepiece. Create other practice views of your creation .

Answers:

  • # 1 : - 5.0 , - 0.28 (Ignore transiting moon’s shadow at 0.25 ) , 1.6 , 28
  • # 2 : - 5.7 - 2.6 , - 1.9 , 8.9
  • # 3 : - 3.8 , 1.5 , 3.6 , and unknown ( one is being occulted ). Always estimate the distances along the line created by the moons through Jupiter, no t just the right to left spacing .
  • # 4 -6.4 , - 2.9 , -1.7 , 3.4
  • # 5 -1.8 , - 4.2 , 5.2 , one either occulted or lost  in the glare from Jupiter. Disregard the near by star that  is not in the plane of  the moons! Did you get used to a given size for the planet and forget that in this case the apparent size of Jupiter changed ?
  • # 6 - 2.4 , 2.3 , 10.0 , one not shown
[Home]
[Abstract]
[I. Purpose]
[II. Background]
[III. Orbits]
[IV. Period  Determination]
[V. Methods]
[VI. Kepler's Laws]
[VII. Observing Suggestions]
[VIII. Data Gathering]
[IX. Data Processing]
[X. Observer's Data Results]
[XI. Other Quad-A Results]
[XII. Conclusions]
[XIII. Attachments]		 [Up]
[XIII-A. Data Sheets]
[XIII-B. Processed Data Representation]
[XIII-C. Press Release]
[XIII-D. Weighing Jupiter]
[XIII-E. Galileo Galilei Discovers Jupiter’s Moons]
[XIII-F. Practice JD estimating sessions]
[XIII-G. Earth-Jupiter Distance Effects]

 

 The image of Jupiter on the Project Jupiter cover page is courtesy of AAAA member Charlie Warren of Texas. Used by permission. Jupiter and three of its moons - right to left are the moons Europa, Io and Ganymede. Callisto is not on the image. CCD Image taken February 2, 2002.

AAAA
The American Association of Amateur Astronomers
P.O. Box 7981
Dallas, TX 75209-0981
e-Mail: aaaa@astromax.com
www.AstroMax.com