ASTR 1110General Astronomy:The Solar System
Thursday, 02 June 2005
Announcements No observing – bad weather Voyager software not that great
Check out Distant Suns (http://www.distantsuns.com)
Get clicker by Monday!!!! Let me know about project by today Time to start homework Monday, back in Duane
Ancient History, Timekeeping
Today’s Plan
Celestial Navigation Phases of the Moon Eclipses Planets More Constellations SBO – Phase and Eclipse Activities
Find your Latitude Pick any star at night
Or use Sun during the day IF you know what day it is.
Subtract Declination from Altitude to get Altitude of Celestial Equator
Subtract Altitude of Celestial Equator from 90° to get Latitude
Example Vega: Dec = 38° 44’
AltCE = Alt* - Dec*
AltCE = 88° 44’ - 38° 44’AltCE = 50°
Lat = 90° - AltCE
Lat = 90° - 50°Lat = 40°
Inferior Planets
Inferior Conjuction
Superior Conjunction
GreatestEasternElongation
GreatestWestern Elongation
Superior Planets
Opposition
Conjunction
EasternQuadrature
WesternQuadrature