Belinda (moon) explained
| Belinda |
| Image Alt: | Image of Belinda acquired by Voyager 2 |
| Discoverer: | Stephen P. Synnott / Voyager 2 |
| Discovered: | January 13, 1986 |
| Mpc Name: | Uranus XIV |
| Pronounced: | [1] |
| Adjective: | Belindian |
| Semimajor: | 75 255.613 ± 0.057 km |
| Eccentricity: | 0.00007 ± 0.000073 |
| Inclination: | 0.03063 ± 0.028° (to Uranus' equator) |
| Satellite Of: | Uranus |
| Dimensions: | 128 × 64 × 64 km |
| Surface Area: | ~ |
| Volume: | ~ |
| Mass: | ~ |
| Surface Grav: | ~– m/s2 |
| Escape Velocity: | ~– km/s |
| Rotation: | synchronous |
| Axial Tilt: | zero |
| Albedo: | 0.08 ± 0.01 |
| Single Temperature: | ~64 K |
Belinda is an inner satellite of the planet Uranus. Belinda was discovered from the images taken by Voyager 2 on 13 January 1986 and was given the temporary designation S/1986 U 5. It is named after the heroine of Alexander Pope's The Rape of the Lock. It is also designated Uranus XIV.
Belinda belongs to the Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Rosalind, and Perdita. These satellites have similar orbits and photometric properties. Other than its orbit, size of 128 × 64 km, and geometric albedo of 0.08, virtually nothing is known about it.
Voyager 2 images show Belinda as an elongated object with its major axis pointing towards Uranus. The moon is very elongated, with its short axis 0.5 ± 0.1 times the long axis. Its surface is grey in color.
Belinda is in a stable 44:43 mean-motion resonance with Perdita, and from this its mass has been determined to be roughly 26 times that of Perdita.[2]
The inner moon system is unstable over timescales of several millions of years. Belinda and Cupid will probably be the first pair of moons to collide, in 100,000 to 10 million years' time depending on the densities of the Portia-group satellites, due to resonant interactions with the much smaller Cupid.[3]
See also
References
Sources
- 10.1086/300263. Jacobson. R. A.. 1998. The Orbits of the Inner Uranian Satellites From Hubble Space Telescope and Voyager 2 Observations. The Astronomical Journal. 115. 3. 1195–1199. 1998AJ....115.1195J. 118616209. free.
- 10.1006/icar.2001.6597. Karkoschka. Erich. Erich Karkoschka. 2001. Voyager's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites. Icarus. 151. 1. 69–77. 2001Icar..151...69K. .
- Web site: Planetary Satellite Physical Parameters . 18 October 2010 . JPL (Solar System Dynamics) . 2012-01-27 . .
- Web site: Williams . Dr. David R. . 23 November 2007 . Uranian Satellite Fact Sheet . NASA (National Space Science Data Center) . 2012-01-27 .
- 10.1006/icar.2001.6596. Karkoschka. Erich. Erich Karkoschka. 2001. Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope. Icarus. 151. 1. 51–68. 2001Icar..151...51K. .
- Marsden . Brian G. . Satellites of Uranus . IAU Circular . 4164 . 1986-01-16 . 2012-01-27 . .
- Web site: . Planet and Satellite Names and Discoverers . July 21, 2006 . USGS Astrogeology . Gazetteer of Planetary Nomenclature . 2012-01-27 . .
- Ćuk . Matija . French . Robert S. . Showalter . Mark R. . Tiscareno . Matthew S. . Moutamid . Maryame El . 2022-07-16 . Cupid is not Doomed Yet: On the Stability of the Inner Moons of Uranus . The Astronomical Journal . en . 164 . 2 . 38 . 10.3847/1538-3881/ac745d . 1538-3881. free. . 2205.14272 .
- Showalter. Mark R.. Mark R. Showalter. Lissauer. Jack J.. Jack J. Lissauer. 17 February 2006. The Second Ring-Moon System of Uranus: Discovery and Dynamics. Science. 311. 5763. 973–977. 10.1126/science.1122882.
External links
Notes and References
- Book: Benjamin Smith. 1903. The Century Dictionary and Cyclopedia.
- French . Robert S. . Showalter . Mark R. . de Pater . Imke . Lissauer . Jack J. . 2017-10-01 . Orbital and Photometric Analysis of the Inner Uranian Satellites from Hubble Images . 49 . 214.19.
- French . Robert S. . Showalter . Mark R. . Cupid is doomed: An analysis of the stability of the inner uranian satellites . Icarus . August 2012 . 220 . 2 . 911–921 . 10.1016/j.icarus.2012.06.031. 1408.2543 . 2012Icar..220..911F . 9708287 .
