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° - AltCELat = 90° - 50°Lat = 40°

Inferior Planets

Inferior Conjuction

Superior Conjunction

GreatestEasternElongation

GreatestWestern Elongation

Superior Planets

Opposition

Conjunction

EasternQuadrature

WesternQuadrature