29 Arietis

Stellar classification



  • X -29
  • Y -64
  • Z -68
→ Sol: 98

Object type

  • Spectroscopic binary
  • Star
  • Double or multiple star
  • Infra-Red source
  • UV-emission source
  • X-ray source
simbad:* 29 Ari


29 Arietis (abbreviated 29 Ari) is a triple star system in the northern constellation of Aries. 29 Arietis is the Flamsteed designation. It has an annual parallax shift of 33.40 ± 0.36 mas, which corresponds to a physical distance of approximately 98 light-years (30 parsecs) from Earth. The star is just barely visible to the naked eye with an apparent visual magnitude of 6.0.

The core of the system is formed by a close spectroscopic binary with an angular separation of 3.892 mas and an orbital period of 19.379 days. The larger member of this pair has 114% of the mass of the Sun, while its companion has 88% of the Sun's mass. Orbiting the pair at an angular separation of 1.422 arcseconds over a period of 164 years, the tertiary component has 52% of the Sun's mass.

This article uses material from the Wikipedia article "29 Arietis", which is released under the Creative Commons Attribution-Share-Alike License 3.0.