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Azmidiske — Star in Puppis

HIP 38170; Xi Puppis; 7 Puppis

Magnitude 3.3m Star Puppis (Pup) Visible
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About Azmidiske

Description

Azmidiske, Xi Puppis, is a yellow supergiant of spectral class G3 Ib about 1,200 light-years away — a remote but luminous star in the southern constellation Puppis. It shines at magnitude 3.34 and has a total luminosity of roughly 6,000 Suns. Azmidiske is a known spectroscopic binary with a close companion in a 2.66-year orbit.

Observing Tips

Azmidiske lies in southern Puppis, at the stern of the old Argo Navis ship. From mid-northern latitudes it is low on the southern horizon in winter months; southern sites see it much higher. In binoculars it is a warm yellow point in a star-rich field. Best observed December through April.

History

The name Azmidiske likely comes from the Arabic "al-ẓamīdīka," meaning "the little shield." The IAU adopted the name in 2017.

Fun Facts

Azmidiske's stellar wind blows with one of the higher mass-loss rates among nearby G-type supergiants, gradually stripping matter from the star. Its position within the rich Puppis-Vela star-forming region places it near the subtle glow of the Vela Supernova Remnant.

Observe

1Physical Properties

Magnitude 3.34
Spectral Type G3Ib supergiant
Star Color Red (B-V 1.24)
Distance 1,191 ly

2Position & Identifiers

RA 07h 49m 17.7s
Dec -24° 51' 35.0"
Constellation Puppis (Pup)
HR 3045
HIP 38170
HD 63700
SAO 174601
Bayer Xi
Flamsteed 7 Pup
Double Cat 6393

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Easy Easy Medium+
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 Dec – Feb (peak: Jan)

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

Also classified G3Ib.
Azmidiske; Asmidiske, a name more properly applied to HR 3699 according to Allen.
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Light Travel Time Machine

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Relativistic Travel

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