Kappa Virginis
Template:Location mark Location of κ Virginis (circled) | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Virgo |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 4.180[2] |
| Characteristics | |
| Spectral type | K2/3 III[3] |
| U−B Template:Engvar | +1.457[2] |
| B−V Template:Engvar | +1.343[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[4] km/s |
| Proper motion (μ) | RA: +7.25[1] mas/yr Dec.: +139.88[1] mas/yr |
| Parallax (π) | 12.80±0.25 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.28[5] |
| Details | |
| Mass | Script error: No such module "val".[6] Template:Solar mass |
| Radius | Script error: No such module "val".[6] Template:Solar radius |
| Luminosity | 229[6] Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val".[6] cgs |
| Temperature | Script error: No such module "val".[6] K |
| Metallicity [Fe/H] | −Script error: No such module "val".[6] dex |
| Rotational velocity (v sin i) | 5.1[4] km/s |
| Age | Script error: No such module "val".[6] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Kang, 98 Virginis, κ Vir, BD−09°3878, FK5 523, HD 124294, HIP 69427, HR 5315, SAO 158427[7] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
Kappa Virginis (κ Virginis, abbreviated Kappa Vir, κ Vir), officially named Kang Template:IPAc-en,[8] is a solitary star in the zodiac constellation of Virgo. It has an apparent visual magnitude of 4.18,[2] which is sufficiently bright to be seen with the naked eye. Based upon stellar parallax measurements, the distance to this star is about 255 light-years.
Nomenclature
κ Virginis (Latinised to Kappa Virginis) is the star's Bayer designation.
In Chinese, Script error: No such module "Lang". (Script error: No such module "Lang".), meaning Neck, refers to an asterism consisting of Kappa Virginis, Iota Virginis, Phi Virginis and Lambda Virginis.[9] Consequently, Kappa Virginis itself is known as Script error: No such module "Lang". (Script error: No such module "Lang".), "the First Star of Neck".[10]
In 2016, the IAU organized a Working Group on Star Names (WGSN)[11] to catalog and standardize proper names for stars. The WGSN approved the name Kang for this star on 30 June and it is now so included in the List of IAU-approved Star Names.[8]
Properties
This is an orange-hued K-type giant star with a stellar classification of K2/3 III.[3] It has about 146% of the mass of the Sun, but at an estimated age of 9.7 billion years it has evolved and expanded to over 25 times the Sun's radius. As a consequence, it shines with around 229 times the solar luminosity. The effective temperature of the star's outer atmosphere is 4,235 K.[6]
References
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- ↑ a b c d e Script error: No such module "citation/CS1".
- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ a b c d e f g h Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Template:In lang 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, Template:ISBN.
- ↑ Template:In lang 香港太空館 - 研究資源 - 亮星中英對照表 Template:Webarchive, Hong Kong Space Museum. Accessed on line November 23, 2010.
- ↑ Script error: No such module "citation/CS1".
Script error: No such module "Check for unknown parameters".