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Ankaa — Star in Phoenix

HIP 2081; Alpha Phoenicis

Magnitude 2.4m Star Phoenix (Phe) Visible
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About Ankaa

Description

Ankaa is an orange giant of spectral type K0III at magnitude 2.39, the brightest star in Phoenix. Located about 77 light-years from Earth, it has a luminosity of roughly 83 times solar and a surface temperature of about 4,600 K. It is one of the brighter southern stars visible from tropical northern latitudes.

Observing Tips

Ankaa lies in the far southern sky, visible south of Cetus and Sculptor. It is the brightest star in the relatively faint constellation Phoenix. Its warm orange color helps identify it. Visible from latitudes south of about 32°N. Best observed October through December.

History

The name Ankaa comes from the Arabic 'al-'anqa,' meaning 'the phoenix.' Phoenix was created by Petrus Plancius from Dutch navigators' observations and first appeared on a celestial globe in 1598. It is one of the twelve constellations created to fill in the far southern sky.

Fun Facts

Ankaa is one of the few stars with a proper name derived from the Arabic word for the constellation's mythological figure rather than a description of the star's position. Phoenix is one of the few constellations named after a mythological creature that is common to many cultures worldwide.

Observe

1Physical Properties

Magnitude 2.39
Spectral Type K0.5IIIb bright giant
Star Color Orange (B-V 1.09)
Distance 85 ly

2Position & Identifiers

RA 00h 26m 17.0s
Dec -42° 18' 22.0"
Constellation Phoenix (Phe)
HR 99
HIP 2081
HD 2261
SAO 215093
Bayer Alpha

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 Aug – Oct (peak: Sep)

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

13

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

A* 2.38 K0III, 10.538y, a = 0.072".
3848.83d, K 5.8k/s, V0 +75.2k/s, asini 289.
ANKAA; Nair al Zaurak; Cymbae; Lucida Cymbae; Head of Phoenix.
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Light Travel Time Machine

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Relativistic Travel

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

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