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, when it culminates around midnight.
- From London it never rises above the horizon.
- From New York it culminates about 4° above the horizon.
- From Sydney it culminates about 78° above the horizon.
It can be seen from anywhere south of 44° N.
It ranks no. 9 in brightness among the 27 stars of Telescopium in our catalogue. To find it, start from Alpha Telescopium, the brightest: it lies about 1° away (a fist at arm's length covers about 10°).
The light you see today left it about 1,200 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 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