Alpha Pictoris — Star in Pictor
About Alpha Pic
Description
Alpha Pictoris is a white star of spectral type A8VnkA6 at magnitude 3.27, the brightest star in the faint southern constellation Pictor (the Painter's Easel). Located about 97 light-years from Earth, it has a surface temperature of about 7,500 K and a luminosity roughly 18 times solar. It is a rapidly rotating star.
Observing Tips
Alpha Pic lies in the small, faint constellation Pictor, between Canopus and the Large Magellanic Cloud. It is the only star brighter than 4th magnitude in the entire constellation, making it easy to identify by elimination. Only visible from the southern hemisphere and very low northern latitudes. Best observed from December through March.
History
Pictor was created by Nicolas Louis de Lacaille in the 1750s during his survey of the southern skies from the Cape of Good Hope. The full name was originally 'Equuleus Pictoris' (the Painter's Easel). Alpha Pictoris has no traditional proper name, as the constellation postdates classical astronomy.
Fun Facts
Pictor's most famous star is actually Beta Pictoris — not Alpha — because Beta Pic was the first star discovered to have a visible debris disk, photographed in 1984. It became the prototype for understanding planetary system formation. Alpha Pic gets far less attention despite being the constellation's brightest star.
Observe
1Physical Properties
2Position & Identifiers
3How easy to spot?
| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Easy | Easy | Medium+ |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
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5Survey Image
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Explore
7
Size Comparison
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Compare Stars
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Spectral Classification
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Hertzsprung-Russell Diagram
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Stellar Lifecycle
12
Blackbody Spectrum
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Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
Discover
15
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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