Astronomy Principles and Practice Fourth Edition.pdf

462 Answers to problems
Figure A8.2. Hour angle of X ≈ 22 h ; declination of X ≈ 20 ◦ S, altitude of Y ≈ 40 ◦ ; azimuth of Y ≈ 80 ◦ EofS.
Celestial Celestial
longitude latitude
X ≈200 ◦ ≈15 ◦ S
Y ≈250 ◦ ≈18 ◦ S
Figure A8.3. Azimuth of X ≈ 40 ◦ W; altitude of X ≈ 50 ◦ .
Hour angle of Y ≈ 3 1 2 h ; declination of Y ≈ 12 ◦ S.
The traveller is not stating the truth. The Sun’s maximum northerly declination is 23 ◦ 26 ′ . The zenith lies on the
30 ◦ N declination circle.
Star X is circumpolar since PX < PN.