List of nearest supergiants explained

This is a list of the nearest supergiant stars to Earth, located at a distance of up to 1100ly from Earth. Some of the brightest stars in the night sky, such as Rigel and Antares, are in the list.

While supergiants are typically defined as stars with luminosity classes, or, other definitions exist, such as those based on stellar evolution. Therefore, stars with other luminosity classes can sometimes be considered supergiants.

List

Name					Apparent magnitude (V)	class=unsortable	Notes
Canopus	309		73.3 ± 5.2	9.81 ± 1.83		While it is frequently described as a yellow supergiant, especially in evolutionary terms, it is classified as a bright giant based on spectrum.
Sargas (θ Scorpii A)		or	35.5 × 26.3			Either a lower luminosity supergiant or a (bright) giant, formed after stellar merger of two smaller stars
Rasalgethi (α Herculis Aa)			284 ± 60	2.5	3.35	Possibly a bright giant
Rastaban (β Draconis)			or
Betelgeuse	–		640	16.5 – 19	0.5	The nearest non-disputed (uncontroversial) red supergiant, and the 10th brightest star in the night sky.
α Trianguli Australis						Either a supergiant or bright giant
ζ Capricorni
Polaris					1.98
Mirfak (α Persei)				7.3 ± 0.3	1.806
Sadalsuud (β Aquarii)
Antares			680	1116	0.61.6	15th brightest star in the night sky.
κ Pavonis			1925		(3.91 - 4.78)
Saiph			14			The closest blue supergiant.
Enif (ε Pegasi)			178	11– 12
Sadalmelik (α Aquarii)			70[1]
β Arae				8.21
ζ Persei	to		to 26.1
Aspidiske (ι Carinae)			46.4–50.1	6.9
Ahadi (π Puppis)			235	11.7
Rigel						7th brightest star in the night sky.
χ Aquilae			23.3
ζ Aurigae A						Sometimes considered a red supergiant; possible bright giant
β Camelopardalis
η Aquilae A	,			5.7	3.484.33
δ Cephei A					3.48 – 4.37	Protoype of the Classical Cepheid variable stars.
ζ Cephei
Miram (η Persei)
β Doradus					3.46 – 4.08
Naos (ζ Puppis)			13.5 ± 0.2	25.3 ± 5.3	– 2.26

External links

• Samus NN, Kazarovets EV, Durlevich OV, Kireeva NN, Pastukhova EN . General Catalogue of Variable Stars: Version GCVS 5.1 . Astronomy Reports . 2017 . 61 . 1 . 80–88 . 255195566 . 2017ARep...61...80S . 10.1134/S1063772917010085 . 1063-7729 .

Notes and References

1. . The radius (R_*) is given by:

   \begin{align}2 ⋅ R_* &=

   	(211.9 ⋅ 3.066 ⋅ 10-3) AU
   	0.0046491 AU/Rodot

   \\ & ≈ 140 ⋅ R_odot\end{align}