234 Barbara
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters |
| Discovery date | August 12, 1883 |
| Designations | |
| 1942 RL1, 1953 RE, 1975 XP |
|
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 444.054 Gm (2.968 AU) |
| Perihelion | 269.817 Gm (1.804 AU) |
| 356.935 Gm (2.386 AU) | |
| Eccentricity | 0.244 |
| 1346.128 d (3.69 a) | |
|
Average orbital speed
|
19.28 km/s |
| 333.976° | |
| Inclination | 15.352° |
| 144.648° | |
| 192.212° | |
| Physical characteristics | |
| Dimensions | 45.62 ± 1.93[2] km |
| Mass | (0.44 ± 1.45) × 1018[2] kg |
| 26.5 h | |
| Albedo | 0.227 |
|
Spectral type
|
S |
| 9.02 | |
234 Barbara is a main belt asteroid that was discovered by German-American astronomer Christian Heinrich Friedrich Peters on August 12, 1883 in Clinton, New York. It is classified as a stony S-type asteroid based upon its spectrum. The mean diameter is estimated as 45.6 km.[2]
Polarimetric study of this asteroid reveals anomalous properties that suggests the regolith consists of a mixture of low and high albedo material. This may have been caused by fragmentation of an asteroid substrate with the spectral properties of CO3/CV3 carbonaceous chondrites.[3]
Possible Binary Nature
Observations made in 2009 with ESO's Very Large Telescope Interferometer (VLTI) suggested that 234 Barbara may be a binary asteroid,[4] although a paper published in 2015 states that "the VLTI observations can be explained without the presence of a large satellite"[5]
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found. See Table 1.
- ↑ 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
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
<templatestyles src="Asbox/styles.css"></templatestyles>
_mathilde.jpg){kind=small} |
This article about an S-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |
