Iota Arietis [SEP] constellation
Iota Arietis
Iota Arietis (ι Ari, ι Arietis) is the Bayer designation for a binary star system in the northern constellation of Aries. It has an apparent visual magnitude of 5.117; bright enough to be dimly seen with the naked eye. Parallax measurements made during the Hipparcos mission yield an estimated distance of from Earth.
This is a spectroscopic binary system with an orbital period of 1,568 days (4.3 years) and an eccentricity of 0.36. The primary is a K-type main sequence star with
. FK6(I) contains 878 stars, and FK6(III) contains 3,272 stars. Both are updated and amended versions of FK5, using Hipparcos catalogue data.
Examples.
- Iota Arietis is located in FK5 as item 2132
- Alpha Arietis is FK5 item 74
- Kappa Aurigae is FK5 item 1168
See also.
Astronomical Calculation Institute
External links.
- Fifth fundamental catalogue part I Basic FK5 (1988)
- Fifth fundamental catalogue part II FK5 extension