Caliban is the second largest irregular satellite of Uranus . Turns in the opposite direction.
| Caliban | |
|---|---|
| Uranus Satellite | |
 (circled) | |
| Discovery story | |
| Discoverer | Gladman , Nicholson , Burns and Cavelars |
| opening date | September 6, 1997 |
| Orbital characteristics | |
| Semimajor axis | 7,168,879 km |
| Eccentricity | 0.082347 |
| Circulation period | 579.379 d |
| Orbital inclination | 139.6813 ° |
| Longitude Longitude | 174.9928 ° |
| Pericenter Argument | 339.4621 ° |
| physical characteristics | |
| Diameter | ~ 72 km |
| Surface area | ~ 16,000 km² |
| Weight | ~ 3⋅10 17 kg [1] |
| Density | ~ 1.5 g / cm 3 [1] |
| Rotation period around the axis | 2.7 hours |
| Albedo | estimated at about 0.04 [2] |
| Surface temperature | ~ 64 K |
| Atmosphere | missing |
The Caliban was discovered on September 6, 1997 by Gladman , Nicholson , Burns and Cavelars using the 200-inch telescope of the Palomar Observatory along with Sycorax and received the temporary designations S / 1997 U 1 and Uranus XVI [3] . Named after the protagonist of William Shakespeare's play The Tempest .
If the geometric albedo of the satellite is taken to be 0.04, its average diameter should be about 72 kilometers [2] (data from 2005; estimates of 60 [3] , 97 [4] and 74 km [5] were previously obtained). In this case, it is the second largest irregular satellite of Uranus after Sycorax . Elements of the orbit have similar features with the elements of the orbit of Stefano . One can make an assumption about their common origin [6] . The orbital period of 2.7 hours on its own axis is obtained from the satellite's light curve. Caliban has a slightly reddish color ( BV = 0.83 ± 0.06 m ; VR = 0.52 ± 0.06 m [4] , according to another study - BV = 0.84 ± 0.03 m ; VR = 0 , 57 ± 0.03 m ) and redder than Sycorax , but less red than most of the Kuiper Belt objects .
Notes
- ↑ 1 2 Planetary Satellite Physical Parameters . JPL's Solar System Dynamics group. Date accessed June 2, 2019. Archived June 2, 2019.
- ↑ 1 2 Sheppard SS, Jewitt D., Kleyna J. An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness // The Astronomical Journal : journal. - IOP Publishing 2005. - Vol. 129 , no. 1 . - P. 518-525 . - DOI : 10.1086 / 426329 . - . - arXiv : astro-ph / 0410059 .
- ↑ 1 2 Gladman BJ, Nicholson PD, Burns JA, Kavelaars JJ, Marsden BG, Williams GV, Offutt WB Discovery of two distant irregular moons of Uranus (Eng.) // Nature. - 1998. - Vol. 392 , no. 6679 . - P. 897-899 . - DOI : 10.1038 / 31890 . - .
- ↑ 1 2 Rettig TW, Walsh K., Consolmagno G. Implied Evolutionary Differences of the Jovian Irregular Satellites from a BVR Color Survey (English) // Icarus : journal. - Elsevier , 2001 .-- Vol. 154 . - P. 313-320 . - DOI : 10.1006 / icar.2001.6715 . - .
- ↑ Grav T., Holman MJ, Fraser WC Photometry of Irregular Satellites of Uranus and Neptune (Eng.) // The Astrophysical Journal : journal. - IOP Publishing 2004. - Vol. 613 , no. 1 . - P. L77 — L80 . - DOI : 10.1086 / 424997 . - . - arXiv : astro-ph / 0405605 .
- ↑ Grav T., Holman MJ, Gladman BJ, Aksnes K. Photometric survey of the irregular satellites (English) // Icarus . - Elsevier , 2003 .-- Vol. 166 , no. 1 . - P. 33-45 . - DOI : 10.1016 / j.icarus.2003.07.005 . - . - arXiv : astro-ph / 0301016 .
Links
- Caliban Profile by NASA's Solar System Exploration
- David Jewiit pages
- Scott Sheppard pages
- Caliban on the website of GAISH.
- Ephemeris IAU-NSES
- NASA JPL Orbit Elements