126 Velleda
From Wikipedia, the free encyclopedia
|
Discovery
|
|
|---|---|
| Discovered by | Paul Henry and Prosper Henry |
| Discovery date | November 5, 1872 |
|
Designations
|
|
| Alternative names | |
| Minor planet category |
Main belt |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 403.523 Gm (2.697 AU) |
| Perihelion | 326.153 Gm (2.180 AU) |
| Semi-major axis | 364.838 Gm (2.438644[1] AU) |
| Eccentricity | 0.1060806[1] |
| Orbital period | 1391.107 d (3.81 a) |
| Average orbital speed | 19.02 km/s |
| Mean anomaly | 117.027° |
| Inclination | 2.92451°[1] |
| Longitude of ascending node | 23.47325°[1] |
| Argument of perihelion | 327.94065°[1] |
|
Physical characteristics
|
|
| Dimensions | 44.82 km[1] |
| Mass | 9.4×1016 kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | 0.0125 m/s² |
| Escape velocity | 0.0237 km/s |
| Rotation period | 5.364 ± 0.003 d[2] |
| Albedo | 0.1723[1] |
| Temperature | ~178 K |
| Spectral type | S |
| Absolute magnitude | 9.27[1] |
126 Velleda is a Main belt asteroid. It is probably a rather typical, albeit sizable, S-type asteroid. It was discovered by Paul Henry on November 5, 1872 in Paris, France. It was his first credited discovery. He and his brother Prosper Henry discovered a total of 14 asteroids.
This asteroid rotates once every 5 days, 8 hours and 44 minutes. During each rotation the light curve varies by 0.22 magnitudes.[2]
[edit] References
- ^ a b c d e f g h 126 Velleda. JPL Small-Body Database Browser. NASA JPL (August 29, 2003). Retrieved on 2007-03-12.
- ^ a b Dovgopol, A. N.; Kruglyi, Iu. N.; Shevchenko, V. G. (1992). "Asteroid 126 Velleda - Rotation period and magnitude-phase curve". Acta Astronomica 42 (1): 67-72.
|
|||||
