Daphnis ( Greek: Δάφνις ) is the third natural satellite of Saturn , also known as Saturn XXXV .
| Daphnis | |
|---|---|
| Saturn's satellite | |
 Daphnis's picture taken by Cassini on July 5, 2010 | |
| Discovery story | |
| Discoverer | Cassini Imaging Science Team , C. Porco |
| opening date | May 6, 2005 |
| Orbital characteristics | |
| Eccentricity | 0.0000331 ± 0.0000062 |
| Circulation period | 0.594 days |
| physical characteristics | |
| Diameter | ~ 7 km |
| Weight | ~ 5-50⋅10 13 kg |
| Density | 0.34 ± 0.21 g / cm³ |
| Rotation period around the axis | synchronized |
| Albedo | ~ 0.50 |
| Surface temperature | ~ 78 K |
| Atmosphere | missing |
Opening
It was discovered on May 6, 2005 by a group of American astronomers led by Carolyn Porco in photographs taken on May 1, 2005 by the Cassini spacecraft [1] . The satellite received the provisional designation S / 2005 S 1 [1] [2] . In July 2006, he received the name of the character of ancient Greek mythology Daphnis [3] .
Orbit
Daphnis is seen as a point that causes unrest in the edges of the Keeler gap
Daphnis makes a complete revolution around Saturn in 14 hours and 15 minutes at a distance of 136,500 km [4] . The eccentricity and inclination of the orbit are very small, but nonzero. It is located inside the so-called Keeler gap of the outer ring A.
Physical Characteristics
The size of Daphnis is 9 × 9 × 6 km [5] . The surface is very light.
Links
- ↑ 1 2 CBAT . IAUC 8524: S / 2005 S 1; V2361 Cyg; C / 1998 U7 . Circular No. 8524 Harvard University (May 6, 2005) . - Opening on May 6, 2005 . Date of treatment February 7, 2019.
- ↑ ; Martinez, C .; Dyches, P. Cassini Finds New Saturn Moon That Makes Waves . Cassini: Unlocking Saturn's Secrets . NASA (May 10, 2005) . Date of treatment February 7, 2019.
- ↑ IAUC 8730: Saturn XXXV (Daphnis) (English) (pdf) (link not available) . Great Britain Online . - Naming a satellite . Date of treatment February 7, 2019. Archived October 1, 2011.
- ↑ Jacobson, RA; et al. Revised orbits of Saturn's small inner satellites // The Astronomical Journal : journal. - IOP Publishing 2008. - Vol. 135 . - P. 261-263 . - DOI : 10.1088 / 0004-6256 / 135/1/261 .
- ↑ Porco, CC ; et al. Saturn's Small Inner Satellites: Clues to Their Origins (Eng.) // Science : journal. - 2007. - Vol. 318 . - P. 1602-1607 . - DOI : 10.1126 / science.1143977 .
See also
- Daphnis is a hero of mythology.