Delta Horologii

Stellar classification



  • X 112
  • Y -130
  • Z -49
→ Sol: 178

Object type

  • Double or multiple star
  • Star
  • Infra-Red source
  • High proper-motion Star
  • UV-emission source
simbad:* del Hor


Delta Horologii (δ Horologii) is a binary star system in the constellation Horologium. It is visible to the naked eye with a combined apparent visual magnitude of 4.93. As of 2014, the pair had an angular separation of 0.20 arc seconds along a position angle of 24°. Based upon an annual parallax shift of 18.24 mas as seen from Earth, it is located about 179 light years from the Sun.

The primary, component A, is a magnitude 5.15 A-type main sequence star with a stellar classification of A9 V. At the estimated age of 768 million years, it is spinning rapidly with a projected rotational velocity of 220 km/s, giving the star an oblate shape with an equatorial bulge that is 15% larger than the polar radius. The star has 1.4 times the mass of the Sun.

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