Star profile
Delta 2 Telescopium
Hot blue starWhat is Delta 2 Telescopium
Delta-2 Telescopii is a very young binary system — barely forty million years old — in the southern constellation of the Telescope. Its two components orbit in 21.7 days and together emit five thousand one hundred and twenty-nine times the Sun's light, dimmed by the interstellar dust that fills the twelve hundred light-years between us. A pair of blue giants blazing at over seventeen thousand degrees, freshly emerged from the cloud in which they formed.
Where it is and when to see it
Delta 2 Telescopium lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is June: 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.
It opens in your browser. Free, no account, nothing to install.
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
If you don't have an account yet, we'll ask for an email to confirm it's you: we send you a link and that's it, 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 Delta 2 Telescopium
- Constellation
- Telescopium
- Apparent magnitude
- 5.07
- Distance
- 1194.9 light years
- Coordinates (J2000)
- RA 278.008° · Dec -45.757°
- Catalogue
- HIP 90853 · HD 170523
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Telescopium
Telescopium has 27 stars in Stelvia's catalogue. Here are a few of them.
- Alpha Telescopium3.49
- Zeta Telescopium4.10
- Epsilon Telescopium4.52
- Delta 1 Telescopium4.92
- Xi Telescopium4.93
- Eta Telescopium5.03
- Rho Telescopium5.17
- Kappa Telescopium5.18