Table 2
Observation geometry of Saturn for the various epochs at mid-observation.
| Window 1: July 2011 | |||||||
| Date | θ | λobs | φobs | λ⊙ | φ⊙ | NP | LS |
| 2011-07-12 13:25:00 | 17.06 | 83.95 | 9.43 | 78.43 | 12.57 | 356.79 | 23.41 |
| Window 2: February 2012 | |||||||
| Date | θ | λobs | φobs | λ⊙ | φ⊙ | NP | LS |
| 2012-02-02 00:32:00 | 17.62 | 245.72 | 18.41 | 251.20 | 15.85 | 358.57 | 30.05 |
| 2012-02-02 22:01:00 | 17.65 | 251.56 | 18.41 | 257.02 | 15.86 | 358.57 | 30.08 |
| Window 3: July–August 2012 | |||||||
| Date | θ | λobs | φobs | λ⊙ | φ⊙ | NP | LS |
| 2012-07-29 17:25:00 | 16.73 | 60.70 | 15.84 | 55.10 | 18.51 | 357.96 | 35.79 |
| 2012-08-10 18:17:00 | 16.42 | 97.90 | 16.25 | 92.64 | 18.68 | 358.03 | 36.18 |
| Window 4: January–February 2013 | |||||||
| Date | θ | λobs | φobs | λ⊙ | φ⊙ | NP | LS |
| 2013-01-30 03:47:00 | 17.02 | 180.70 | 23.25 | 186.49 | 21.05 | 359.86 | 41.63 |
| 2013-02-02 06:37:00 | 17.11 | 188.94 | 23.27 | 194.74 | 21.09 | 359.87 | 41.76 |
Notes. Saturn’s equatorial angular diameter, given in arcsec as seen from Herschel, is represented by θ. λobs and φobs are the longitude and latitude (respectively) of the sub-observer point. λ⊙ and φ⊙ are the longitude and latitude (respectively) of the sub-solar point. NP is the North Polar angle in degrees, and LS is Saturn’s solar longitude in degrees. The different values are extracted from JPL/Horizons.
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