1 Pegasi

Stellar classification



  • X -137
  • Y -56
  • Z 48
→ Sol: 156

Object type

  • Spectroscopic binary
  • Star
  • Double or multiple star
  • Infra-Red source
  • UV-emission source
simbad:* 1 Peg


1 Pegasi (1 Peg) is a class K1III (orange giant) star in the constellation Pegasus. Its apparent magnitude is 4.09 and it is approximately 155.8 light years away based on parallax.

It has several companions in addition to the primary. The brightest companion, B, has magnitude 9.3, class K0V (orange main-sequence), and separation 36.6"; it is itself a spectroscopic binary with period 1111 days and eccentricity 0.29. Additional companions C, with magnitude 12.9 and separation 64.7", and D, with magnitude 9.6 and separation 5.3", have been reported.

This article uses material from the Wikipedia article "1 Pegasi", which is released under the Creative Commons Attribution-Share-Alike License 3.0.