Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Question
Chapter 14, Problem 5Q
(a)
To determine
The position of Uranus in year 2004 and 1986 and draw the figure. Also, explain the reason.
(b)
To determine
The year in which the next Sun will be highest in the sky as seen from Uranus’s South Pole. Also, explain the answer.
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Venus can be as bright as apparent magnitude −4.7 when at a distance of about 1 AU. How many times fainter would Venus look from a distance of 7 pc? Assume Venus has the same illumination phase from your new vantage point. (Hints: Recall the inverse square law; also, review the definition of apparent visual magnitudes. Note: 1 pc = 2.1 ✕ 105 AU).
[fill in the blank] times fainter
What would its apparent magnitude be?
What is the angular diameter of Saturn (in degrees) as seen from the surface of Hyperion? (Note: Necessary data can be found https://www.webassign.net/seedsfoundations14/22-celestial-profile-saturn.pdf and in this table https://www.webassign.net/seedsfoundations14/a-table-11.pdf)( Hint: Use the small-angle formula)
_________ degrees
Tutorial
You observe a comet 0.32 AU from Earth with a tail that is 1.7 degrees long. How long is the tail in AU?
How long is the tail in kilometers?
How many times could the U.S. fit along the length of the tail? (The width of the U.S. is 4,313 km.)
Part 1 of 3
You observe a comet 0.32 AU from Earth with a tail that is 1.7 degrees long. How long is the tail in AU?
We use the small angle formula to calculate the length of the tail in AU.
arc seconds d
Ꮎ
2.06 x 105
D
Solving for the linear distance gives:
dAU = DAU
dAU =
=
AU
arc seconds
2.06 x 105
Chapter 14 Solutions
Universe
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