What is the (annual) parallax of an Oort Cloud member at parsecs?

1. What is the (annual) parallax of an Oort Cloud member at 0.1 parsecs?

• 1. What is the (annual) parallax of an Oort Cloud member at 0.1 parsecs?

• 2. If the Earth orbited a binary M1.0V dwarf system (two Suns with 0.5 M each) at 4 AU, what would our orbital period be?

• 3. If Pluto has a temperature of 50 K, at what wavelength does it emit the most photons?

• 4. The Sun as a red giant will swell to ~100 times its present size and will drop in temperature to ~2900K. By how much will its luminosity be different than today’s?

• 5. Proxima Centauri has V ~ 11 and is at a distance of ~1 pc. How bright would it appear from 100 pc?

• B. List two factors that determine the equilibrium temperature of a planet.

1. What is the (annual) parallax of an Oort Cloud member at 0.1 parsecs?

• 1. What is the (annual) parallax of an Oort Cloud member at 0.1 parsecs?

• 10 arcseconds

• 2. If the Earth orbited a binary M1.0V dwarf system (two Suns with 0.5 M each) at 4 AU, what would our orbital period be?

• 8 years

• 3. If Pluto has a temperature of 50 K, at what wavelength does it emit the most photons?

• 58 microns

• 4. The Sun as a red giant will swell to ~100 times its present size and will drop in temperature to ~2900K. By how much will its luminosity be different than today’s?

• 625X brighter

• 5. Proxima Centauri has V ~ 11 and is at a distance of ~1 pc. How bright would it appear from 100 pc?

• V ~ 21

• B. List two factors that determine the equilibrium temperature of a planet.

• solar flux, distance from Sun, orbital eccentricity

• planet albedo, emissivity, obliquity, rotation rate