Iota Leonis
 Location of ι Leonis (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Leo |
| Right ascension | 11h 23m 55.45273s[1] |
| Declination | +10° 31′ 46.2195″[1] |
| Apparent magnitude (V) | 4.00[2] |
| Characteristics | |
| Spectral type | F3 V[3] |
| U−B color index | +1.420[4] |
| B−V color index | +0.456[4] |
| Variable type | Suspected[5] |
| Astrometry | |
| Radial velocity (Rv) | −10.3[6] km/s |
| Proper motion (μ) | RA: +141.45[1] mas/yr Dec.: −79.14[1] mas/yr |
| Parallax (π) | 41.26 ± 1.16[1] mas |
| Distance | 79 ± 2 ly (24.2 ± 0.7 pc) |
| Details | |
| Mass | 1.62−1.70[7] M☉ |
| Radius | 2.1[8] R☉ |
| Luminosity | 11.5[7] L☉ |
| Surface gravity (log g) | 3.98[9] cgs |
| Temperature | 6,739[9] K |
| Metallicity [Fe/H] | 0.06[9] dex |
| Rotational velocity (v sin i) | 16[7] km/s |
| Age | 1.7[7] Gyr |
| Other designations | |
Iota Leonis is a star in the constellation Leo.
Iota Leonis is of stellar classification F3 V and apparent visual magnitude +3.94. It is a spectroscopic binary, which means it is a binary star with components that are too close together to be able to resolve individually through a telescope.[7]
Name
In Chinese, 太微右垣 (Tài Wēi Yòu Yuán), meaning Right Wall of Supreme Palace Enclosure, refers to an asterism consisting of ι Leonis, β Virginis, σ Leonis, θ Leonis and δ Leonis.[10] Consequently, ι Leonis itself is known as 太微右垣三 (Tài Wēi Zuǒ Yuán sān, English: the Third Star of Right Wall of Supreme Palace Enclosure.),[11] representing 西次將 (Xīcìjiāng), meaning The Second Western General.[12] 西次將 (Xīcìjiāng), spelled Tsze Tseang by R.H. Allen, means "the Second General" [13]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found. Note: see VizieR catalogue I/311.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 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.
- ↑ 7.0 7.1 7.2 7.3 7.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 9.0 9.1 9.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ (Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
- ↑ (Chinese) 香港太空館 - 研究資源 - 亮星中英對照表, Hong Kong Space Museum. Accessed on line November 23, 2010.
- ↑ (Chinese) English-Chinese Glossary of Chinese Star Regions, Asterisms and Star Name, Hong Kong Space Museum. Accessed on line November 23, 2010.
- ↑ [1]
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