Arrive your zenith 2 10 marks you are at the equator

This preview shows page 1 - 3 out of 3 pages.

arrive your zenith?2.(10 marks)You are at the equator. You look towards the southern horizon and see two stars Aand B as shown in the following figure.(a) Which star(s) can still be seen by you 3 hours later?
Page 2/2(b) Suppose the right ascension (R.A.) of star A is 3 hours. What is the R.A. of starB?3.(10 marks)You are at the equator. You look towards the horizon of certain direction and see astar A as shown in the figure below. Afterxhours of observation (wherexis aninteger less than 24), Star A has moved to the new position A. Towards whichdirection are you looking? What is the value ofx[Note: If there is more than one solution, then you should list all possible directionsand their corresponding values ofx.]4.(5 marks)You are now looking towards the eastern horizon through a window of a hotel inSydney, Australia. The rectangle below is the window frame. Copy the figure inyour answer script and use an arrow to indicate the path of the sun during sunrise inthe figure. What is the angle between the arrow and dashed line (to the nearestinteger)??
Page 1/1UGEB 2401B AstronomyProblem Set 1 (Suggested answers)1.(a) R.A.= 22 hours(3 marks); DEC = 0o(3 marks)(b) 2 am [or4 hours later](4 marks)2.(a)B(4 marks)(b) R.A. of B = 9 hours(6 marks)[Note: In the figure, the East is in the counter-clockwise direction (Why?). TheR.A. is measured toward the East.]3.There are two possible solutions:(1) North;x = 18(5 marks)(2) South;x = 6(5 marks)4.The angle between the arrow and dashed line is 34o(3 marks)[Note: 33ois also an acceptable answer]
End of preview. Want to read all 3 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Spring
Professor
NoProfessor
Tags
Celestial coordinate system

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture