The GP of a body for a high altitude sight...

Question 1 of 2707066636ee928f7522a1c519830

The GP of a body for a high altitude sight is determined from the Greenwich hour angle and the __________.

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Question 1 of 27070

Q

The GP of a body for a high altitude sight is determined from the Greenwich hour angle and the __________.

🔍 Key Concepts

• Geographical Position (GP) of a celestial body • Difference between GHA (Greenwich Hour Angle) and declination in celestial navigation • Which coordinate pair (like latitude/longitude on Earth) uniquely fixes a point on the globe

💭 Think About

• Ask yourself: GHA gives you information similar to a type of longitude. What second piece of information (from the choices) would act like a latitude to fix a single point on Earth? • Consider which of the options is an angular distance north or south of a fundamental plane, rather than a direction or a distance. • Think: the GP is a specific point on Earth directly under the celestial body. Which pair of celestial coordinates maps directly to an Earth latitude/longitude pair?

✅ Before You Answer

• Identify which option represents an angle north/south of the celestial equator (celestial latitude-equivalent). • Eliminate any quantity that describes a direction (bearing) rather than a position coordinate. • Eliminate any quantity that represents a distance along the Earth’s surface instead of a coordinate of the GP.