ASTR 1040PP Lecture Notes - Lecture 1: Equinox, Farthest North, Diurnal Motion

• School: Utah Valley University
• Department: Astronomy
• Course: ASTR 1040PP
• Professor: Karl Haisch

Document Summary

Ecliptic: the line that the sun follows around the earth/the path that the earth follows around the sun. Vernal equinox: when the sun crosses the celestial equator running from the southern hemisphere to the north. 0 hours or the prime meridian is where this takes place. Autumnal equinox: when the sun crosses the celestial equator running from the northern hemisphere to the south. Summer solstice: the highest point that the sun will reach in the sky. Winter solstice: the lowest point that the sun reaches in the sky. Constellations: are recognizable patterns of stars in the sky. The 12 constellations along the ecliptic on your star chart are called the zodiac constellations. Asterism: re(cid:272)og(cid:374)iza(cid:271)le patter(cid:374)s i(cid:374) the sk(cid:455) that are(cid:374)"t part of the 88 (cid:272)o(cid:374)stellatio(cid:374)s. Motions of the sun and stars: the risi(cid:374)g a(cid:374)d setti(cid:374)g of the stars is (cid:272)aused (cid:271)(cid:455) the earth"s rotatio(cid:374) a(cid:271)out its a(cid:454)is, daily motion / diurnal motion, annual motion, the earth"s or(cid:271)it arou(cid:374)d the su(cid:374).