Star profile
Beta Triangulum
What is Beta Triangulum
Beta Trianguli is the brightest beacon of the modest Triangle —three points that the ancients saw as a delta traced north of Aries—. At some 127 light-years, its white type-A glow conceals a spectroscopic system whose two components orbit each other in barely thirty-one days. A discreet star that nonetheless anchors one of the cleanest constellations of the northern autumn sky.
Where it is and when to see it
Beta Triangulum 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, 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 21° above the horizon.
It can be seen from anywhere north of 55° S.
It is the brightest of the 18 stars of Triangulum in our catalogue, which makes it the best starting point for finding your way around the constellation.
The light you see today left it about 130 years ago.
It opens in your browser. Free, no account, nothing to install.
Leave your signature on Beta Triangulum
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 Beta Triangulum
- Constellation
- Triangulum
- Apparent magnitude
- 3.00
- Distance
- 126.9 light years
- Coordinates (J2000)
- RA 32.386° · Dec 34.987°
- Catalogue
- HIP 10064 · HD 13161
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Triangulum
Triangulum has 18 stars in Stelvia's catalogue. Here are a few of them.
- MothallahAlpha Triangulum3.42
- Gamma Triangulum4.03
- Delta Triangulum4.84
- 6 Triangulum4.94
- 14 Triangulum5.15
- 7 Triangulum5.25
- 10 Triangulum5.29
- 12 Triangulum5.29