Betelgeuse
red supergiant star in the constellation of Orion
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Summary
Betelgeuse is a red supergiant[1]. Betelgeuse ranks in the top 6% of red supergiant entities by monthly Wikipedia readership (30,793 views/month).[2]
Key Facts
- Instance of: long-period variable star[3], navigational star[4], infrared source[5], near-infrared source[6], sub-millimetric source[7], ultraviolet source[8], semiregular variable star[9], star[10], variable star[11], pulsating variable star[12]
- Constellation: Orion[13]
- Spectral class: M1-M2Ia-Iab[14]
- Part of: Winter Triangle[15]
- Commons category: Betelgeuse[16]
- Companion of: Siwarha[17]
- Catalog code: SAO 113271[18], GSC 00129-01873[19], 2MASS J05551028+0724255[20], HD 39801[21], HIP 27989[22], HR 2061[23], IRAS 05524+0723[24], α Ori[25], 58 Ori[26], ADS 4506 AP[27], BD+07 1055[28], CCDM J05552+0724AP[29], FK5 224[30], GC 7451[31]
- Type of variable star: SRc semi-regular variable star[32]
- Topic's main category: Category:Betelgeuse[33]
- Commons gallery: Betelgeuse[34]
- Apparent magnitude: 0.42[35], 4.38[36], 2.27[37], -1.17[38], -2.45[39], -3.00[40], -3.73[41], -4.05[42]
- Described by source: Great Soviet Encyclopedia (1926–1947)[43], Brockhaus and Efron Encyclopedic Dictionary[44], Otto's encyclopedia[45]
- Absolute magnitude: -5.14[46]
- Color index: 1.86[47], 2.06[48]
- Different from: Betelgeuse[49]
Why It Matters
Betelgeuse has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[50] Betelgeuse is known by 74 alternative names across languages and contexts.[51]