HD 83058 is a subgiant

star A star is an astronomical object comprising a luminous spheroid of plasma (physics), plasma held together by its gravity. The List of nearest stars and brown dwarfs, nearest star to Earth is the Sun. Many other stars are visible to the naked ...

in the

constellation A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object. The origins of the e ...

Vela and a

spectroscopic binary A binary star is a system of two star, stars that are gravity, gravitationally bound to and in orbit around each other. Binary stars in the night sky that are seen as a single object to the naked eye are often resolved using a telescope as separa ...

. It is visible to the naked eye with an apparent visual magnitude of 5.0. Based upon an annual parallax shift of , it is located from the Sun. The system is moving further away with a heliocentric

radial velocity The radial velocity or line-of-sight velocity, also known as radial speed or range rate, of a target with respect to an observer is the temporal rate of change, rate of change of the distance or Slant range, range between the two points. It is e ...

of +. HD 83058 has generally been considered to be a single star, but high-resolution spectra show it to be a double-lined

. The two components have approximately the same spectral type. Line-profile variations have been detected which suggest that at least one component pulsates, as is common for stars of this spectral class. HD 83058 was proposed as a

runaway star In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space. Stellar kinematics encompasses the measurement of stellar velocities in the Milky Way and its satellites as well as t ...

from a

supernova A supernova is a powerful and luminous explosion of a star. It has the plural form supernovae or supernovas, and is abbreviated SN or SNe. This transient astronomical event occurs during the last evolutionary stages of a massive star or when ...

explosion. However, the discovery that it is a binary makes this unlikely.

References

{{DEFAULTSORT:HD 83058 Vela (constellation) Velorum, L Durchmusterung objects 083058 046950 3819 Spectroscopic binaries B-type subgiants