- Source: Iota Lupi
ι Lupi, Latinised as Iota Lupi, is a solitary star in the southern constellation of Lupus. It is visible to the naked eye with an apparent visual magnitude of 3.54. Based upon an annual parallax shift of 9.65 mas as seen from Earth, it is located around 338 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.23 due to interstellar dust. Relative to its neighbors, this star has a peculiar velocity of 27.4±4.9 km/s. It appears to be a member of the Scorpio-Centaurus OB association.
This star has the spectrum of a B-type subgiant star with a stellar classification of B2.5 IV, which may indicate that it has used up its core supply of hydrogen and has begun to expand off the main-sequence. It is rotating rapidly with a projected rotational velocity of 370 km/s. This is giving the star an oblate shape with an equatorial bulge that is an estimated 12% larger than the polar radius. It is about 20 million years old with 6.9 times the mass of the Sun and 4 times the Sun's radius. The star radiates 2,082 times the solar luminosity from its outer atmosphere at an effective temperature of 18,605 K.
References
External links
Kaler, James B. (August 9, 2013), "Iota Lupi", Stars, University of Illinois, retrieved 2017-03-06.
Kata Kunci Pencarian:
- Daftar planet luar surya yang ditemukan pada tahun 2000–2009
- Iota Lupi
- List of brightest natural objects in the sky
- Floyd Masson
- List of star systems within 55–60 light-years
- List of star systems within 45–50 light-years
- Slowly pulsating B-type star
- List of Chinese star names
- List of supernova candidates
- List of nearest stars by spectral type
- List of exoplanet firsts
