Star profile
HIP 102571
Variable starWhat is HIP 102571
An orange K-type star pulses in Cygnus, the swan that glides across the Milky Way with open wings. Its light is not constant: it varies in a slow rhythm, like a cosmic heart breathing in silence. What we see today departed around 445 years ago, when Tycho Brahe, on the island of Hven, was raising the Uraniborg observatory to measure the heavens with a precision unmatched before the telescope.
Where it is and when to see it
HIP 102571 lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is August, when it culminates around midnight.
- From London it culminates about 73° above the horizon.
- From New York it culminates about 84° above the horizon.
- From Sydney it culminates about 22° above the horizon.
It can be seen from anywhere north of 56° S.
It ranks no. 41 in brightness among the 137 stars of Cygnus in our catalogue. To find it, start from Deneb, the brightest: it lies about 11° away (a fist at arm's length covers about 10°).
The light you see today left it about 450 years ago.
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Astronomical data for HIP 102571
- Constellation
- Cygnus
- Apparent magnitude
- 4.93
- Distance
- 445.0 light years
- Coordinates (J2000)
- RA 311.795° · Dec 34.374°
- Catalogue
- HIP 102571 · HD 198134
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Cygnus
Cygnus has 137 stars in Stelvia's catalogue. Here are a few of them.
- DenebAlpha Cygni1.25
- SadrGamma Cygni2.23
- AljanahEpsilon Cygni2.48
- 72 Cygni4.87
- 15 Cygni4.89
- Psi Cygni4.91
- 28 Cygni4.93
- 29 Cygni4.93