1|Page
MSU ISP 205 Final Exam | Most Recent Exam 2026
Actual Complete Real Exam Questions With Correct
Answers ||Verified Exam!!!(Verified Answers) Already
Graded A+ | Guaranteed Success!! | Newest Exam!!!
Advantages of obtaining information from transits? -
Answers-No details about the star needed
Can survey many stars at once
Disadvantages of obtaining information from transits? -
Answers-Must view orbit nearly perfectly edge-on
Dimming may be caused by other sources, not just transit
Explain what it means for the radial velocity signature of
an exoplanet to be periodic? - Answers-Periodic means
that the radial velocity signature repeats at regular
intervals (it is a repeating pattern). The radial velocity
signature is due to the motion of the star that we observe
during a planet's orbit. Since the orbit repeats (is periodic),
the radial velocity signature is also periodic. The period is
set by the orbital period of the planet.
What is Kepler's 3rd Law? - Answers-p^2 = a^3
, 2|Page
How do you find a planets velocity? - Answers-(2πa)/p a=
distance in AU, p = period in years
How do you find planet mass? - Answers-(star
velocity/planet velocity) x star mass
If you have detected a planet using the radial velocity
method would it be helpful to also obtain measurements of
the planet transit? - Answers-It would be useful to also
obtain measurements of the planet's transit. With the
radial velocity method, you can estimate the planet's
mass. With the transit method, you can estimate the
planet's size (or radius)
What information comes from the radial velocity method? -
Answers-Period (from which you can determine the
distance)
Mass of planet relative to star
When a star is moving towards us it is? - Answers-blue
shifted
MSU ISP 205 Final Exam | Most Recent Exam 2026
Actual Complete Real Exam Questions With Correct
Answers ||Verified Exam!!!(Verified Answers) Already
Graded A+ | Guaranteed Success!! | Newest Exam!!!
Advantages of obtaining information from transits? -
Answers-No details about the star needed
Can survey many stars at once
Disadvantages of obtaining information from transits? -
Answers-Must view orbit nearly perfectly edge-on
Dimming may be caused by other sources, not just transit
Explain what it means for the radial velocity signature of
an exoplanet to be periodic? - Answers-Periodic means
that the radial velocity signature repeats at regular
intervals (it is a repeating pattern). The radial velocity
signature is due to the motion of the star that we observe
during a planet's orbit. Since the orbit repeats (is periodic),
the radial velocity signature is also periodic. The period is
set by the orbital period of the planet.
What is Kepler's 3rd Law? - Answers-p^2 = a^3
, 2|Page
How do you find a planets velocity? - Answers-(2πa)/p a=
distance in AU, p = period in years
How do you find planet mass? - Answers-(star
velocity/planet velocity) x star mass
If you have detected a planet using the radial velocity
method would it be helpful to also obtain measurements of
the planet transit? - Answers-It would be useful to also
obtain measurements of the planet's transit. With the
radial velocity method, you can estimate the planet's
mass. With the transit method, you can estimate the
planet's size (or radius)
What information comes from the radial velocity method? -
Answers-Period (from which you can determine the
distance)
Mass of planet relative to star
When a star is moving towards us it is? - Answers-blue
shifted
