Prob02_sol1

Prob02_sol1 - o ) ( 5 marks ) (b) It takes 6 hours for the...

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Page 1/1 UGEB 2401B Astronomy Problem Set 2 (Suggested answers) 1. (a) Northern hemisphere. ( 2 marks ) West. ( 2 marks ) (b) 6 hours. ( 3 marks ) (c) Note that the line BB’ should be parallel to AA’. Correct line ( 2 marks ). Correct position B’ ( 1 mark ). 2. (a) The position of the star is 90 o to the east of the vernal equinox. Since R.A. is counted “eastward” from the vernal equinox, the R.A. of the star is 6 hours. (Note: 1 hour = 15
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Unformatted text preview: o ) ( 5 marks ) (b) It takes 6 hours for the vernal equinox to reach the zenith of A. The star needs 1.5 hours more (i.e., 7.5 hours) to reach the zenith of A. Hence, the time is 1:30 am next morning (i.e., 7.5 hours after 6pm). ( 5 marks ) 3. (a) Pisces ( 3 marks ) (b) Leo ( 3 marks ) (c) Auriga ( 3 marks ) (d) Ursa Minor ( 3 marks ) 4. (a) S ( 2 marks ) (b) T ( 2 marks ) (c) Q ( 2 marks )...
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