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Tarazed — Star in Aquila

HIP 97278; Gamma Aquilae; 50 Aquilae

Magnitude 2.7m Star Aquila (Aql) Visible
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About Tarazed

Description

Tarazed is an orange giant of spectral type K3II at magnitude 2.72 in Aquila. Located about 395 light-years from Earth, it has a luminosity of roughly 2,500 times solar and a diameter about 95 times the Sun's. Tarazed flanks Altair to the north, forming part of the distinctive trio of stars at Aquila's center.

Observing Tips

Tarazed is the upper (northern) of the two stars flanking Altair — the other is Alshain (Beta Aql). The three form a conspicuous line, with Altair brilliantly white in the center. Tarazed's orange color provides a beautiful contrast with Altair. Best observed June through November.

History

The name Tarazed comes from Persian, meaning 'the beam of the scale.' The Altair-Tarazed-Alshain trio has been recognized since ancient times. Tarazed's orange color and position next to brilliant Altair make the color contrast one of the most accessible in the sky.

Fun Facts

Tarazed's proximity to Altair provides one of the easiest color comparisons visible to the naked eye — cool orange next to brilliant white, requiring no optical aid to appreciate.

Observe

1Physical Properties

Magnitude 2.72
Spectral Type K3II bright giant
Star Color Red (B-V 1.52)
Distance 395 ly

2Position & Identifiers

RA 19h 46m 15.6s
Dec +10° 36' 48.0"
Constellation Aquila (Aql)
HR 7525
HIP 97278
HD 186791
SAO 105223
Bayer Gamma
Flamsteed 50 Aql

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Easy Easy Easy
50mm finder Easy Easy Easy
150mm scope Easy Easy Easy
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

4Visibility

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Best season Jun – Aug (peak: Jul)

5Survey Image

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Size Comparison

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Spectral Classification

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Hertzsprung-Russell Diagram

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Stellar Lifecycle

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Blackbody Spectrum

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Stellar Absorption Spectrum

Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.

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Stellar Fusion

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15Stellar Notes

Ultraviolet FeII emission.
TARAZED; Reda.
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Light Travel Time Machine

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Relativistic Travel

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