4. The plot below showing measured radial velocity versus time for the star lota Draconis has been used to infer the pre

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4 The Plot Below Showing Measured Radial Velocity Versus Time For The Star Lota Draconis Has Been Used To Infer The Pre 1 (77.51 KiB) Viewed 83 times

4. The plot below showing measured radial velocity versus time for the star lota Draconis has been used to infer the presence of a large planet. time [years] 2000 2001 2002 2009 2004 2005 2006 2007 400 • Dra 300 200 100 0 -100 -200 -300 -400 -500 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 JD-2451545.0 [days] a. What is the orbital period of that planet in days? (2 pts) (Hint: you can probably get a better estimate if you measure several periods and divide by the number of periods, rather than just measuring from the beginning to the end of a single period) b. What else can you infer about the planet's orbit? (2 pts) [S/m] ™AV