At upper transit, if the zenith distance is...

Question 1 / 2707066636ee928f7522a1c51a525

Question 1 of 2707066636ee928f7522a1c51a525

At upper transit, if the zenith distance is 34°, the geographical distance from the observer to a body's GP is __________.

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Question 1 of 27070

At upper transit, if the zenith distance is 34°, the geographical distance from the observer to a body's GP is __________.

🔍 Key Concepts

• Relationship between zenith distance and angular distance from the GP (geographical position) • Conversion factor of 1° of arc ≈ 60 nautical miles on Earth’s surface • Meaning of upper transit (meridian passage) in celestial navigation

💭 Think About

• How does the zenith distance in degrees relate to the arc distance on the Earth’s surface between you and the body’s GP? • Once you know the distance in degrees, what simple multiplication converts that angular distance into nautical miles? • Does upper transit change the basic relationship between zenith distance and surface distance, or just describe when the observation occurs?

✅ Before You Answer

• Confirm that zenith distance in degrees = surface arc distance in degrees between observer and GP • Apply the factor 60 NM per degree carefully, watching for multiplication vs. division mistakes • After computing, compare your result to the choices and check for reasonable magnitude (is it a few hundred, about a thousand, or over two thousand miles?)

Question 1 of 27070

At upper transit, if the zenith distance is 34°, the geographical distance from the observer to a body's GP is __________.

510 miles

1220 miles

2040 miles

2260 miles