-Alt. of celestial pole in your sky = your latitude
-total variation in max solar amplitude anywhere on planet
over 1yr is 2x the tilt of the planet.
-RA (unit of time) =
: line that runs through spring
equinox (measured E of S. equinox)
-Geocentric model: Greek, earth-centered; Ptolemaic model explained apparent retrograde motion as real motion by having each planet move on a small circle whose center
moves around Earth on a larger circle (epicycles); model made predictions of positions
History of Astronomy
(Bennett et al. Ch. 3)
Animations are available onlinefollow the link from the Course
Documents / Lectures section of blackboard.
Let me know if you have trouble playing them.
Only a brief history is provided hereyour recommended text
(Eales Ch 6, App B, Cole & Woolfson Ch. 3, Topic M;
Carroll & Ostlie Ch. 2)
Our knowledge of orbital motion started with the planets.
Kepler described three laws of planetary motion that were later
derived by Newton.
AST 205: Introduction to
AST 205: Introduction to Planetary Science
AST 205 is an introduction to the astronomy and astrophysics of
the solar system and other planetary systems for physical
There will be a lot of maththis is
Observations Around Us
(Bennett et al. Ch. 2, S1)
Reading is essential
Recall that these lectures will not cover everything in the assigned readings in
full detailit is your responsiblity to keep up with the readings and ask
questions you may have in lect