Star profile
HIP 30840
Variable starWhat is HIP 30840
In Canis Major, where Sirius reigns unchallenged, a blue variable star pulses with an almost imperceptible beat. Its light began its journey 863 years ago, when the first stones of Notre-Dame de Paris were being laid and the Provençal troubadours were inventing modern love poetry. Far hotter than the Sun, its brightness shifts in time like a deep, slow breath, reminding us that no star is wholly unchanging.
Where it is and when to see it
HIP 30840 lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is January: 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 30840
- Constellation
- Canis Major
- Apparent magnitude
- 5.74
- Distance
- 863.0 light years
- Coordinates (J2000)
- RA 97.164° · Dec -32.371°
- Catalogue
- HIP 30840 · HD 45871
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Canis Major
Canis Major has 90 stars in Stelvia's catalogue. Here are a few of them.
- SiriusAlpha Canis Majoris-1.44
- AdharaEpsilon Canis Majoris1.50
- WezenDelta Canis Majoris1.83
- HIP 354875.70
- Nu 1 Canis Majoris5.71
- HIP 311905.73
- HIP 328105.74
- HIP 343605.75