131 Vala
| Discovery[1] | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | May 24, 1873 |
| Designations | |
| Main belt[1] | |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 388.147 Gm (2.595 AU) |
| Perihelion | 339.381 Gm (2.269 AU) |
| 363.764 Gm (2.432 AU) | |
| Eccentricity | 0.06679 |
| 1384.969 d (3.79 a) | |
|
Average orbital speed
|
19.08 km/s |
| 101.289° | |
| Inclination | 4.958° |
| 65.772° | |
| 159.106° | |
| Physical characteristics | |
| Dimensions | 40.4 km[1] |
| Mass | 6.9×1016 kg |
| 0.0113 m/s² | |
| 0.0214 km/s | |
| 5.18 hr[1] | |
| Temperature | ~178 K |
|
Spectral type
|
K[2] (Bus) |
| 10.03[1] | |
131 Vala is an inner main-belt asteroid. It was discovered by C. H. F. Peters on May 24, 1873, and named after Völva, a prophetess in Norse mythology.[3] One observation of an occultation of a star by Vala is from Italy (May 26, 2002). 10-µm radiometric data collected from Kitt Peak in 1975 gave a diameter estimate of 34 km.[4]
In the Tholen classification system, it is categorized as an SU-type asteroid, while the Bus asteroid taxonomy system lists it as an K-type asteroid.[2] Photometric observations of this asteroid during 2007 at the Organ Mesa Observatory in Las Cruces, New Mexico were used to create a "nearly symmetric bimodal" light curve plot. This showed a rotation period of 10.359 ± 0.001 hours and a brightness variation of 0.09 ± 0.02 magnitude during each cycle.[5] The result is double the 5.18 hour period reported in the JPL Small-Body Database.[1]
On 2028-Apr-05, Vala will pass 0.0276 AU (4,130,000 km; 2,570,000 mi) from asteroid 2 Pallas.[6]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found. See appendix A.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- Orbital simulation from JPL (Java) / Ephemeris
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