Star profile
HIP 47522
Hot blue starWhat is HIP 47522
In the sinuous coils of Hydra shines a blue B-type star, far hotter and more massive than the Sun, a bonfire destined to burn fast and die young. Its light needs about 506 years to cross the void: what we receive today departed around 1520, as Magellan was crossing the strait that would bear his name. Hydra, the largest of all constellations, unfolds its body like a dark river across the southern sky.
Where it is and when to see it
HIP 47522 lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is February, when it culminates around midnight.
- From London it culminates about 15° above the horizon.
- From New York it culminates about 26° above the horizon.
- From Sydney it culminates about 80° above the horizon.
It can be seen from anywhere south of 66° N.
It ranks no. 28 in brightness among the 121 stars of Hydra in our catalogue. To find it, start from Alphard, the brightest: it lies about 15° away (a fist at arm's length covers about 10°).
The light you see today left it about 510 years ago.
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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 47522
- Constellation
- Hydra
- Apparent magnitude
- 4.76
- Distance
- 506.5 light years
- Coordinates (J2000)
- RA 145.321° · Dec -23.592°
- Catalogue
- HIP 47522 · HD 83953
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Hydra
Hydra has 121 stars in Stelvia's catalogue. Here are a few of them.
- AlphardAlpha Hydrae1.99
- Gamma Hydrae2.99
- Zeta Hydrae3.11
- HIP 473104.68
- Omicron Hydrae4.70
- HIP 463714.72
- 26 Hydrae4.77
- 51 Hydrae4.78