Homework 1

1. Dec: South horizon is at -56 degrees, so 65-56= 9 degrees
RA: 18-12+4=10 hours

2. Dec: North horizon is at 157 degrees, so 157-78= 79 degrees
RA: 9-0.5=8.5 hours

3. Dec: South horizon is at -132 degrees, so 24-132= -114 degrees
RA: 18-11+2=9 hours

4. September 25, 2000 (leap)= 244+24=268
(36/60)= 0.6
(43.6/60)= 0.7267
(6.7267/24)= 0.28028
So, day number 268.28028

5. 2012= 4381.5
December 21 (leap)= 335+20= 355= 4736.5
(12/60)= 0.2
(21.2/60)= 0.35333
(0.35333/24)= 0.01472
So, day number= 4736.51472