The GHA of the first point of Aries is 315°...

Question 1 / 2066636ee928f7522a1c51981c

Question 1 of 2066636ee928f7522a1c51981c

The GHA of the first point of Aries is 315° and the GHA of a planet is 150°. What is the right ascension of the planet?

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Question 1 of 20

66636ee928f7522a1c51981c

The GHA of the first point of Aries is 315° and the GHA of a planet is 150°. What is the right ascension of the planet?

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🔍 Key Concepts

• Relationship between GHA Aries, GHA of a body, and right ascension (RA) • Converting degrees of arc to time in hours (15° = 1 hour) • Using the correct direction of subtraction (which GHA minus which) to get RA

💭 Think About

• First, decide whether RA is measured eastward or westward from Aries and how that compares to GHA, which is measured westward from Greenwich. • Write a simple equation linking GHA Aries, GHA Planet, and RA. Rearrange it to solve for RA, keeping track of signs and directions. • Once you have RA in degrees, convert it to hours and see which answer choice matches.

✅ Before You Answer

• Be sure whether you should compute GHA Aries − GHA Planet or GHA Planet − GHA Aries based on how RA is defined. • After subtraction, if your angle is negative, normalize it to 0°–360° before converting to hours. • When converting degrees to hours, divide by 15, since 360° corresponds to 24 hours of right ascension.

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Question 1 of 20

The GHA of the first point of Aries is 315° and the GHA of a planet is 150°. What is the right ascension of the planet?

7 hours

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23 hours

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Question 1 / 2066636ee928f7522a1c51981c

Question 1 of 2066636ee928f7522a1c51981c

The GHA of the first point of Aries is 315° and the GHA of a planet is 150°. What is the right ascension of the planet?

Back

Question 1 of 20

66636ee928f7522a1c51981c

The GHA of the first point of Aries is 315° and the GHA of a planet is 150°. What is the right ascension of the planet?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed