Star profile
Theta Aquilae
Hot blue starWhat is Theta Aquilae
Theta Aquilae burns blue at 286 light-years, marking the tail of the Eagle that cuts across the summer Milky Way. B-type stars like this one consume their hydrogen with ferocious appetite: they live fast, blaze blue-white, and die young by cosmic measure. Its light set out when Europe still argued the Enlightenment, arriving now on time, intact, to a sky in no hurry to forget it.
Where it is and when to see it
Theta Aquilae lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is July, when it culminates around midnight.
- From London it culminates about 38° above the horizon.
- From New York it culminates about 48° above the horizon.
- From Sydney it culminates about 57° above the horizon.
It sits almost on the celestial equator, so it can be seen from nearly the whole planet.
It ranks no. 4 in brightness among the 72 stars of Aquila in our catalogue. To find it, start from Altair, the brightest: it lies about 11° away (a fist at arm's length covers about 10°).
The light you see today left it about 290 years ago.
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Astronomical data for Theta Aquilae
- Constellation
- Aquila
- Apparent magnitude
- 3.24
- Distance
- 286.4 light years
- Coordinates (J2000)
- RA 302.826° · Dec -0.821°
- Catalogue
- HIP 99473 · HD 191692
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Other stars in Aquila
Aquila has 72 stars in Stelvia's catalogue. Here are a few of them.
- AltairAlpha Aquilae0.76
- TarazedGamma Aquilae2.72
- OkabZeta Aquilae2.99
- Delta Aquilae3.36
- Lambda Aquilae3.43
- AlshainBeta Aquilae3.71
- Eta Aquilae3.87
- Epsilon Aquilae4.02