We appreciate your visit to a It is 4 PM on the spring equinox What is the local sidereal time b The local sidereal time is 19 30 When will. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
(a) The vernal equinox is at zero hour on the spring equinox, which occurs around March 20. (360 degrees / 23 hours 56 minutes) The sidereal time advances by around 4 minutes every day.
The time since noon is 8 hours, or 480 minutes, as it is 4pm, or 8 hours after noon. Hence, the local sidereal time is roughly: Sidereal time is equal to 0h plus (480 min x 4 min/min)/60 min/hour Sidereal time is equal to 0 hours and 32 minutes 0h 32m is the sidereal time. (b) Vega will cross the meridian at 19:30 local sidereal time since the local sidereal time is 19:30. (c) The difference between the local sidereal time and the star's right ascension is the hour angle. Hour angle equals Right Ascension minus Local Sidereal Time. Hence, the right ascension can be calculated as: Right ascension = Local sidereal time - Hour angle Plugging in the values given.
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