Satellite (S/2001 (107) I)
|
On 1 March 2001, a satellite of Camilla was found by A. Storrs, F. Vilas, R. Landis, E. Wells, C. Woods, B. Zellner, and M. Gaffey using the Hubble Space Telescope. It has been designated S/2001 (107) 1 but has not yet received an official name. Later observations in September 2005 with the VLT allowed the determination of an orbit. Apart from data in infobox, the inclination was found to be 3 ± 1° with respect to an axis pointing towards (β, λ) = (+55°, 75°). Given the ~10° uncertainty in the actual rotational axis of Camilla, one can say that the orbit's inclination is less than 10°. The satellite is estimated to measure about 11 km in diameter. Assuming a similar density to the primary, this would give it an approximate mass of ~1.5×1015 kg. It has a similar colour to the primary. |
|
||||||||||||||||||||||||||||||||||||
| Discovery | |
|---|---|
| Discovered by | Norman Robert Pogson |
| Discovery date | November 17, 1868 |
| Designations | |
| Pronunciation | /kəˈmɪlə/ kə-MIL-ə |
| Alternative names | A893 QA; 1938 OG; 1949 HD1 |
| Minor planet category | Outer Main belt (Cybele) |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 560.937 Gm (3.750 AU) |
| Perihelion | 479.343 Gm (3.204 AU) |
| Semi-major axis | 520.140 Gm (3.477 AU) |
| Eccentricity | 0.078 |
| Orbital period | 2368.050 d (6.48 a) |
| Average orbital speed | 15.95 km/s |
| Mean anomaly | 1.746° |
| Inclination | 10.048° |
| Longitude of ascending node | 173.132° |
| Argument of perihelion | 309.877° |
| Physical characteristics | |
| Dimensions | 344×246×205 km 285×205×170 ± 20 km |
| Mass | 1.12×1019 kg 1.09±0.04×1019 kg |
| Mean density | 1.40±0.30 g/cm³ ~1.9 g/cm³ |
| Equatorial surface gravity | ~0.036 m/s² |
| Escape velocity | 0.10 km/s |
| Rotation period | 0.2018 d (4.84393 h) |
| Albedo | 0.0525 |
| Temperature | ~151 K max: 223 K (-52°C) |
| Spectral type | C |
| Apparent magnitude | 11.53 to 13.93 |
| Absolute magnitude (H) | 7.08 |
Read more about this topic: 107 Camilla
Famous quotes containing the word satellite:
“Books are the best things, well used; abused, among the worst. What is the right use? What is the one end, which all means go to effect? They are for nothing but to inspire. I had better never see a book, than to be warped by its attraction clean out of my own orbit, and made a satellite instead of a system.”
—Ralph Waldo Emerson (1803–1882)