Table 2
Adopted physical parameters for Triton and its atmosphere.
| Triton’s body | |
| Mass(1) | GMT = 1.428 × 1012 m3 s−2 |
| Radius(1) | RT = 1353 km |
| Triton’s geometry on 5 October 2017 | |
| Triton pole position(2) | αp = 20h 09m 29.40s |
| (J2000) | δp =20° 25’ 34.2” |
| Sub-solar latitude | 40.0° S |
| Sub-observer latitude | 40.5° S |
| Sub-observer longitude | 169.9° E |
| N. pole position angle(3) | 305.7° |
| Geocentric distance | D = 4.3506 × 109 km |
| Triton’s atmosphere parameters | |
| N2 molecular mass | µ = 4.652 × 10−26 kg |
| N2 specific heat at constant pressure | cp = 1.04 × 103 JK−1 kg−1 |
| N2 molecular | K = 1.091 × 10−23 |
| refractivity | +(6.282 × 10−26/λ2µm) |
| (visible bands (4)) | cm3 molecule−1 |
| Refractivity at 3.6 cm(5) | K = 1.0945 × 10−23 cm3 molecule−1 |
| Boltzmann constant | kB = 1.380626× 10−23 JK−1 |
Notes. (1)McKinnon et al. (1995), where G is the constant of gravitation. (2)On 5 October 2017, using Davies et al. (1996), with corrections available at ftp://ftp.imcce.fr/pub/iauwg/poles.pdf. (3)Position angle of Triton’s north pole projected in the sky plane. Counted positively from celestial north to celestial east. (4)Washburn (1930). (5)G95.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.