List
| Star name | Solar radii (Sun = 1) |
Notes | ||
|---|---|---|---|---|
| NML Cygni | 1,650 | |||
| WOH G64 | 1,540 | This would be the largest star in the LMC, but is unusual in position and motion and might still be a foreground halo giant. | ||
| VX Sagittarii | 1,520 | VX Sgr is a pulsating variable with a large visual range and varies significantly in size. | ||
| KW Sagittarii | 1,460 | |||
| KY Cygni | 1,420–2,850 | The upper estimate is due to an unusual K band measurement and thought to be an artifact of a reddening correction error. The lower estimate is consistent with other stars in the same survey and with theoretical models. | ||
| Westerlund 1-26 | 1,951–2,544 | Very uncertain parameters for an unusual star with strong radio emission. The spectrum is variable but apparently the luminosity is not. | ||
| VY Canis Majoris | 1,420 | Once thought to be a star so large that it contradicted stellar evolutionary theory, improved measurements have brought it down to size. | ||
| RW Cephei | 1,260–1,610 | RW Cep is variable both in brightness (by at least a factor of 3) and spectral type (observed from G8 to M), thus probably also in diameter. Because the spectral type and temperature at maximum luminosity are not known, the quoted sizes are just estimates. | ||
| PZ Cassiopeiae | 1,190-1,940 | The upper estimate is due to an unusual K band measurement and thought to be an artifact of a reddening correction error. The lower estimate is consistent with other stars in the same survey and with theoretical models. | ||
| VV Cephei A | 1,050–1,900 | VV Cep A is a highly distorted star in a close binary system, losing mass to the secondary for at least part of its orbit. | ||
| Mu Cephei (Herschel's "Garnet Star") | 650-1,420 | |||
| BI Cygni | 916-1,240 | |||
| V354 Cephei | 690-1,520 | |||
| S Persei | 780-1,230 | In the Perseus Double Cluster | ||
| BC Cygni | 1,140 | |||
| RT Carinae | 1,090 | |||
| V396 Centauri | 1,070 | |||
| CK Carinae | 1,060 | |||
| V1749 Cygni | 620-1,040 | |||
| RS Persei | 1,000 | In the Perseus Double Cluster | ||
| NR Vulpeculae | 980 | |||
| RW Cygni | 980 | |||
| Betelgeuse (Alpha Orionis) | 950 | |||
| Antares (Alpha Scorpii) | 883 | |||
| V602 Carinae | 860 | |||
| TZ Cassiopeiae | 800 | |||
| IX Carinae | 790 | |||
| SU Persei | 780 | In the Perseus Double Cluster | ||
| TV Geminorum | 770 | |||
| V355 Cepheus | 300-770 | |||
| V382 Carinae | 700 | Yellow hypergiant, one of the rarest types of star. | ||
| The following well-known stars are listed for the purpose of comparison. | ||||
| CE Tauri ("Ruby Star") | 608 | Can be occulted by the Moon, allowing accurate determination of its apparent diameter. | ||
| Alpha Herculis (Ras Algethi) | 460 | |||
| Rho Cassiopeiae | 450 | Yellow hypergiant | ||
| Mira A (Omicron Ceti) | 400 | Prototype Mira variable | ||
| The Pistol Star | 306 | Among the most massive and luminous stars known. | ||
| La Superba (Y Canum Venaticorum) | 215 | One of the coolest and reddest known stars. | ||
| Eta Carinae (Tseen She) | 85–195 | Previously thought to be the most massive single star, but in 2005 it was realised to be a binary system | ||
| Peony Nebula Star | 100 | Candidate for most luminous star in the Milky Way. | ||
| Rigel (Beta Orionis) | 78 | |||
| Canopus (Alpha Carinae) | 65 | Second brightest star in the night sky. | ||
| Aldebaran (Alpha Tauri) | 44.2 | |||
| R136a1 | 35.4 | Also on record as the most massive and luminous star known. | ||
| HDE226868 | 20-22 | The supergiant companion of black hole Cygnus X-1. The black hole is 500,000 times smaller than the star. | ||
| VV Cephei B | 10 | |||
Read more about this topic: List Of Largest Known Stars
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