2423 Ibarruri
| Discovery [1] | |
|---|---|
| Discovered by | L. Zhuravleva |
| Discovery site | CrAO - Nauchnyj |
| Discovery date | 14 July 1972 |
| Designations | |
| MPC designation | 2423 Ibarruri |
|
Named after
|
Rubén Ibárruri (Hero of the Soviet Union)[2] |
| 1972 NC · 1930 SV 1943 TB · 1956 VC 1972 PB |
|
| Mars crosser [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 58.97 yr (21,538 days) |
| Aphelion | 2.8077 AU |
| Perihelion | 1.5685 AU |
| 2.1881 AU | |
| Eccentricity | 0.2831 |
| 3.24 yr (1,182 days) | |
| 72.359° | |
| Inclination | 4.0574° |
| 265.16° | |
| 80.139° | |
| Earth MOID | 0.5679 AU |
| Physical characteristics | |
| Dimensions | 6.50 km (caculated)[3] |
| 139.79 h[lower-alpha 1] 139.92±0.01 h[4] 73.08±0.10 h[5] 139.9±0.2 h[6] |
|
| 0.20 (assumed)[3] | |
| SMASS = A[7] C [3] |
|
| 13.3 | |
2423 Ibarruri, provisional designation 1972 NC, is an eccentric, slow tumbling asteroid and Mars-crosser from the inner regions of the asteroid belt, about 7 kilometers in diameter. It was discovered by Russian–Ukrainian female astronomer Lyudmila Zhuravlyova at the Crimean Astrophysical Observatory in Nauchnyj, on 14 July 1972.[8]
The spectral type of the asteroid is that of a rare A-type in the SMASS taxonomy, with its surface consisting of almost pure olivine, which gives the body a very reddish color. As of November 2015, only 17 minor planets of this type are known.[9] It orbits the Sun at a distance of 1.6–2.8 AU once every 3 years and 3 months (1,182 days). Its orbit shows a high eccentricity of 0.28 and an inclination of 4 degrees towards the plane of the ecliptic.
Ibarruri has a notably slow rotation period of 140 hours,[lower-alpha 1][6] and seems to be in a non-principal axis rotation (NPAR), colloquially called as "tumbling".[10] As a spectroscopic A-type asteroid, it belongs to the larger group of bodies with a silicaceous composition. However, the Collaborative Asteroid Lightcurve Link classifies the asteroid into the carbonaceous group, despite the fact that is assumes a relatively high geometric albedo of 0.20,[3] which is rather typical for stony asteroids.
The minor planet was named after Rubén Ruiz Ibárruri (1920–1942), son of Spanish communist leader Dolores Ibárruri and a posthumous Hero of the Soviet Union. He enlisted in the Soviet army and died in the early stage of the Battle of Stalingrad in September 1942.[2]
References
- ↑ 1.0 1.1 Pravec (2011) web: rotation period 139.79±0.04 hours with a brightness amplitude of 0.74 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (2423) Ibarruri
- ↑ 1.0 1.1 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.
- ↑ 3.0 3.1 3.2 3.3 3.4 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.
- ↑ 6.0 6.1 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.
- ↑ 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
- Ondrejov Asteroid Photometry Project
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 2423 Ibarruri at the JPL Small-Body Database
<templatestyles src="Asbox/styles.css"></templatestyles>
