Star profile
HIP 9990
Variable starWhat is HIP 9990
It looks out in the direction of Perseus, yet truly belongs to an extremely distant satellite galaxy, more than three hundred thousand light-years away. Its white light, proper to A-class stars, set out long before the rise of Homo sapiens —when no human eye yet existed to look at it. It is a variable whose brightness shifts slowly, and its true luminosity outshines the Sun by orders of magnitude. It offers a rare gift: contemplating an almost extragalactic star as a faint point in our own sky.
Where it is and when to see it
HIP 9990 lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is November: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.
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The signature wall
Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.
A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
Astronomical data for HIP 9990
- Constellation
- Perseus
- Apparent magnitude
- 5.66
- Distance
- 326200.0 light years
- Coordinates (J2000)
- RA 32.169° · Dec 58.424°
- Catalogue
- HIP 9990 · HD 12953
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Perseus
Perseus has 99 stars in Stelvia's catalogue. Here are a few of them.
- MirfakAlpha Persei1.79
- AlgolBeta Persei2.09
- Zeta Persei2.84
- HIP 179325.65
- HIP 175845.66
- HIP 218235.66
- 2 Persei5.70
- 3 Persei5.70