Star profile
Chi Pegasi
Cool red starWhat is Chi Pegasi
Chi Pegasi is an old red giant on the asymptotic branch, near the edge of Pisces. Its reddish tone barely crosses the threshold of unaided vision, yet behind it lies a star eight billion years older than the Sun, swollen to fifty-three times its radius and radiating four hundred and thirty-five times its light from 368 light-years away. It approaches us at 46 km/s in silence, marking the closing chapter of a long stellar life.
Where it is and when to see it
Chi Pegasi lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is October, when it culminates around midnight.
- From London it culminates about 59° above the horizon.
- From New York it culminates about 70° above the horizon.
- From Sydney it culminates about 36° above the horizon.
It can be seen from anywhere north of 70° S.
It ranks no. 25 in brightness among the 98 stars of Pegasus in our catalogue. To find it, start from Enif, the brightest: it lies about 38° away (a fist at arm's length covers about 10°).
The light you see today left it about 370 years ago.
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Astronomical data for Chi Pegasi
- Constellation
- Pegasus
- Apparent magnitude
- 4.79
- Distance
- 368.2 light years
- Coordinates (J2000)
- RA 3.651° · Dec 20.207°
- Catalogue
- HIP 1168 · HD 1013
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Other stars in Pegasus
Pegasus has 98 stars in Stelvia's catalogue. Here are a few of them.
- EnifEpsilon Pegasi2.38
- ScheatBeta Pegasi2.44
- MarkabAlpha Pegasi2.49
- 56 Pegasi4.76
- 32 Pegasi4.78
- 35 Pegasi4.78
- Omicron Pegasi4.80
- 31 Pegasi4.82