Avior (Epsilon Kiel) (ε Car / ε Carinae) - a star in the constellation Kiel . The star has a visible magnitude of + 1.86 m, and is one of the brightest stars in the night sky, but the star is not visible from the Northern Hemisphere (it can be seen from low latitudes, starting from the 30th parallel).
| Avior A / B | |||
|---|---|---|---|
| Star | |||
Illustration of the Avior system (Celestia) | |||
| Observational data ( Age J2000.0 ) | |||
| Type of | double star | ||
| Right ascension | |||
| Declination | |||
| Distance | 630 St. years (200 pc ) | ||
| Visible magnitude ( V ) | 1.86 (~ 2.4 / ~ 3.1) [1] | ||
| Constellation | Keel | ||
| Astrometry | |||
| Radial velocity ( R v ) | 2 km / s | ||
| Own movement (μ) | RA: −25.34 mas per year Dec: 22.72 mas per year | ||
| Parallax (π) | 5.16 ± 0.49 mas | ||
| Absolute magnitude (V) | −4.58 | ||
| Specifications | |||
| Spectral class | K3 III / B2 V [1] | ||
| Color Index ( B - V ) | +1.20 | ||
| Color Index ( U - B ) | +0.19 | ||
| Variability | Eclipsing variable [1] | ||
| physical characteristics | |||
| Weight | ~ 9 / 7.3 [1] M ☉ | ||
| Radius | 153/6 R ☉ | ||
| Age | 31.2 ± 10 Ma | ||
| Temperature | ~ 3 500/20 400 K | ||
| Luminosity | 6,000 / ~ 10,000 [1] L ☉ | ||
| |||
| Database Information | |||
| SIMBAD | data | ||
The star is known by the name Avior, but it is not the classic name of a star (not of historical origin). The name of the star was assigned in the late 1930s for the possibility of navigating the star, when compiling a new star catalog of southern stars by the British Air Force. In addition to Epsilon Kiel, it was named after Alpha Peacock - Peacock . [2]
Episilon Kiel is a binary star located 630 light years from Earth. The main component of the star is the dying orange giant of the spectral class KO III, the second component is a hot blue star of class B2 V. The components periodically overshadow each other, which leads to a decrease in the total brightness of the star by 0.1 magnitude (such a change in brightness can be noticed and the human eye).
Notes
- ↑ 1 2 3 4 5 Kaler, James B., AVIOR (Epsilon Carinae) , University of Illinois , < http://stars.astro.illinois.edu/sow/avior.html > . Retrieved February 12, 2012.
- ↑ Sadler, DH: “A Personal History of HM Nautical Almanac Office”, page 46. Edited and privately published by Wilkins, GA, 1993