HW1_Position_Motion_Time

HW1_Position_Motion_Time - If so where Explain your answers...

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ASTR302 Homework #1 (due in class on Wednesday, January 16, 2008) 1) Complete and submit LT Seasonal Stars (pp 7-9 of Lecture Tutorial book) 2) Mars rotates 668 times per Martian year and it both rotates and revolves in the same direction. The length of a mean solar day on Mars is 24:39:35 (HH:MM:SS). What is the length of a sidereal day on Mars in HH:MM:SS? Include both a diagram and a written explanation in your solution. 3) What is the approximate sidereal time when it is noon apparent solar time on the following days: (explain each answer) i. the first day of spring (March 21) ii. the first day of summer (June 21) iii. April 21 4) Is there any place on Earth where all the visible stars are circumpolar? If so, where? Is there any place on Earth where none of the visible stars is circumpolar?
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Unformatted text preview: If so, where? Explain your answers. 5) What is the right ascension of a star that is on the meridian at midnight at the time of the autumnal equinox? Explain. 6) While camping under the stars, you notice that the star Polaris appears at an altitude of 37 ° in the north. A) What is the latitude of your campsite? B) The Orion Nebula has a declination of -5.5 ° and right ascension of 5 h 25 m . Where do you need to look (altitude and direction) to find the Orion Nebula as it passes highest in the sky? C) On your trip, you notice that Orion passes the meridian at around midnight. What is the approximate date? Explain you reasoning and describe whether you need your sleeping bag....
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