Star profile
HIP 21819
What is HIP 21819
Above the bull's shoulders, deep in Taurus, shines a white class A star some 381 light-years away. Its light set out around 1644, the year Descartes published his Principia philosophiae and laid the foundations of a new mechanistic physics. Hot and crystalline of glow, it is one of those beacons that quietly watched humanity change its way of thinking about the cosmos during the scientific revolution.
Where it is and when to see it
HIP 21819 lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is December, when it culminates around midnight.
- From London it culminates about 67° above the horizon.
- From New York it culminates about 78° above the horizon.
- From Sydney it culminates about 27° above the horizon.
It can be seen from anywhere north of 61° S.
It ranks no. 115 in brightness among the 144 stars of Taurus in our catalogue. To find it, start from Aldebaran, the brightest: it lies about 12° away (a fist at arm's length covers about 10°).
The light you see today left it about 380 years ago.
It opens in your browser. Free, no account, nothing to install.
Leave your signature on HIP 21819
Your name and a message go up on the map for everyone to read. Signing is free.
Without a lock, someone else can replace your signature. How the lock works
We'll ask for an email to confirm it's you, no password.
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 21819
- Constellation
- Taurus
- Apparent magnitude
- 5.73
- Distance
- 381.5 light years
- Coordinates (J2000)
- RA 70.332° · Dec 28.615°
- Catalogue
- HIP 21819 · HD 29646
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Taurus
Taurus has 144 stars in Stelvia's catalogue. Here are a few of them.
- AldebaranAlpha Tauri0.87
- ElnathBeta Tauri1.65
- AlcyoneEta Tauri2.85
- 60 Tauri5.72
- HIP 208425.72
- 131 Tauri5.72
- 6 Tauri5.76
- Asterope5.76