ASTR 101 Lecture Notes - Lecture 40: Axial Tilt, Orbital Period
26 Dec 2017
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Uranus is light blue, neptune is blue with zones/belts. Uranus not discovered until long after the telescope was invented. Herschel (1781): dis(cid:272)o(cid:448)ered (cid:862)(cid:374)e(cid:271)ulous star, or a (cid:272)o(cid:373)et(cid:863). Neptu(cid:374)e: ne(cid:449)to(cid:374) a(cid:374)d kepler(cid:859)s la(cid:449)s did (cid:374)ot a(cid:272)(cid:272)urately predi(cid:272)t ura(cid:374)us predicted new planet. Since its discovery, neptune has just completed 1 orbit. Moves very slowly look like a star. Although n has larger mass, it has a smaller radius because its colder, has more density, pulling gaseous atm closer to inside. Colder at(cid:373) does(cid:374)(cid:859)t (cid:271)alloo(cid:374) out as (cid:373)u(cid:272)h, has larger (cid:272)ore. Ura(cid:374)us(cid:859) rotatio(cid:374): (cid:1005)(cid:1004)-20h sidereal day (magnetosphere = 17. 2h). Pole almost points directly at the sun more energy in the atm and more convection occurring at this area. Tilt leads to extreme seasonality: 42 year long daylight, 42 years darkness at poles. Imagine uranus rotating normally: large collision occurs that changes rotation (like. Need to find a prediction that disproves this theory this must do with moons.
