Star profile

Lambda Aquilae

Hot blue star

3D likeness based on its real data · class B · ~15,000 K

What is Lambda Aquilae

Lambda Aquilae shines blue-white at the head of the Eagle, just 124 light-years away, with a constancy so extreme that the Hipparcos satellite ranked it among the least variable stars in the sky. Three times the Sun's mass and fifty-five times its light, it shares a system with an unseen red-dwarf companion. A cold, steady, almost metronomic light within one of summer's most recognizable asterisms.

Where it is and when to see it

Lambda 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 34° above the horizon.
From New York it culminates about 44° above the horizon.
From Sydney it culminates about 61° above the horizon.

It can be seen from anywhere south of 85° N.

It ranks no. 6 in brightness among the 72 stars of Aquila in our catalogue. To find it, start from Altair, the brightest: it lies about 18° away (a fist at arm's length covers about 10°).

The light you see today left it about 120 years ago.

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Astronomical data for Lambda Aquilae

Constellation: Aquila
Apparent magnitude: 3.43
Distance: 123.7 light years
Coordinates (J2000): RA 286.562° · Dec -4.883°
Catalogue: HIP 93805 · HD 177756

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Other stars in Aquila

Aquila has 72 stars in Stelvia's catalogue. Here are a few of them.

See all 72 stars in Aquila