Astronomy 1L (Lab Class) Information
The Orbital Period of HD15144
Link for sharing this page on Facebook
(An example of how to use radial velocities to calculate orbital periods)
(to be considerably upgraded in the next iteration of this page)
Instructions
     1. Use group 1 and group 2 data to estimate the orbital period.
     2. Use the period to compare the two groups more precisely.
     3. If the results in part 2 look good, use the same period to compare the next group of data; if not, change the period and try again.
     4. Keep repeating the procedure with more groups until you have a period that fits all the data.
Radial Velocity Data for HD15144
JD - 2,440,000 Vr (km/sec) Group
1257.930
1258.933
-17.7
+16.1
5
1582.919
1584.960
+19.7
- 9.5
6
1697.732 - 0.3 6
2001.941 - 0.6 6
2319.943 + 7.9 6
2615.096
2616.113
2617.109
2618.103
- 1.8
-13.0
+18.6
- 1.9
1
2676.930
2677.999
2679.069
2680.014
+15.8
+ 0.6
-12.0
+17.6
2
3109.818
3110.879
3111.926
- 5.1
- 8.6
+20.6
3
4503.043
4503.968
4505.007
4506.038
+20.5
- 8.8
- 2.4
+21.7
4
/body>