Beta Carinae

Beta Carinae
Beta Carinae
Observation data
Epoch J2000      Equinox J2000
Constellation Carina
Right ascension 09h 13m 12.0s
Declination -69° 43' 02"
Apparent magnitude (V) 1.67
Characteristics
Spectral type A2 IV
U−B color index 0.03
B−V color index 0.00
Variable type None
Astrometry
Radial velocity (Rv) -5.2 km/s
Proper motion (μ) RA: -157.66 mas/yr
Dec.: 108.91 mas/yr
Parallax (π) 29.34 ± 0.47 mas
Distance 111 ± 2 ly
(34.1 ± 0.5 pc)
Absolute magnitude (MV) -1.00
Details
Mass 3 M☉
Radius 5.7 R☉
Luminosity 210 L☉
Temperature 9,100 K
Metallicity ?
Rotation 2.1 days
Age 3.5 × 108 years
Other designations
Miaplacidus, Gl 339.2, HR 3685, CD−69°600, HD 80007, GCTP 2213.00, SAO 250495, FK5 348, CP−69°1023, HIP 45238, GC 12764

Beta Carinae (β Car, β Carinae) is the second brightest star in the constellation Carina and one of the brightest stars in the night sky, with apparent magnitude 1.68. It is the brightest star in the south polar asterism known as the Diamond Cross, marking the southwestern end of the asterism. Beta Carinae also has the traditional name Miaplacidus, meaning "placid waters". It lies near the planetary nebula, IC 2448.

Beta Carinae's traditional name Miaplacidus made its debut on star maps in 1856 when the star atlas Geography of the Heavens, composed by Elijah Hinsdale Burritt, was published. The meaning and linguistic origin of the name remained an enigma for many decades, until William Higgins, a great scholar and expert on star names, surmised that the name Miaplacidus is apparently a bilingual combination of Arabic مياه miyāh for "waters" and Latin placidus for "placid".

In Chinese, 南船 (Nán Chuán), meaning Southern Boat, refers to an asterism consisting of β Carinae, V337 Carinae, PP Carinae, θ Carinae and ω Carinae .[1] Consequently, β Carinae itself is known as 南船五 (Nán Chuán wǔ, English: the Fifth Star of Southern Boat.)[2]

References

  1. ^ (Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
  2. ^ (Chinese) 香港太空館 - 研究資源 - 亮星中英對照表, Hong Kong Space Museum. Accessed on line November 23, 2010.

External links

v · d · eStars of Carina
Bayer
α (Canopus) • β (Miaplacidus) • ε (Avior) • η • θ • ι (Aspidiske) • υ • χ • ω • a • b1 • b2 • c • d • e1 • e2 • f • g • h • i • k • l • m • p • q • r • s • t1 • t2 • u • w • x • y • z1 • z2 • A • B • C • D • E • G • H • I • K • L • M • N • O • P • Q
Nearby
NN 3618

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Look at other dictionaries:

  • Beta Carinae — Beta Carinæ (β Car / β Carinæ) Données d observation (Époque J2000) Ascension droite 09h 13m 12.0s Déclinaison 69° 43′ 02″ Constellation Carène Magnitude apparente …   Wikipédia en Français

  • Beta Car — Beta Carinae Beta Carinæ (β Car / β Carinæ) Données d observation (Époque J2000) Ascension droite 09h 13m 12.0s Déclinaison 69° 43′ 02″ Constellation Carène Magnitude apparente …   Wikipédia en Français

  • Β Carinae — Beta Carinae Beta Carinæ (β Car / β Carinæ) Données d observation (Époque J2000) Ascension droite 09h 13m 12.0s Déclinaison 69° 43′ 02″ Constellation Carène Magnitude apparente …   Wikipédia en Français

  • Beta Corvi — Starbox begin name = β CorviStarbox observe epoch = J2000.0 equinox = J2000.0 (ICRS) constell = Corvus ra = RA|12|34|23.2346SIMBAD link|bet+crv|SV* ZI 946 Variable Star, database entry, SIMBAD. Accessed on line September 9, 2008.] dec =… …   Wikipedia

  • Ji Carinae — Constelación Carina Ascensión recta α 07h 01min 43.15s Declinación δ 52º 58’ 56.5’’ Distancia …   Wikipedia Español

  • Chi Carinae — χ Carinae Observation data Epoch J2000.0      Equinox J2000.0 Constellation Carina Right ascension 07h56m46.7s Declination −52°58′56″ …   Wikipedia

  • Chi Carinae — χ Carinae Données d observation (Époque J2000.0) Ascension droite 07h 56m 46.7s Déclinaison 52° 58′ 56″ Constellation Carène Magnitude apparente +3,46 …   Wikipédia en Français

  • V376 Carinae — Starbox short name=V376 Carinae A/B epoch=J2000.0 constell=Carina ra=08h56m58.4s dec=−59°13′46″ spectral=B2IV V/B9.5V appmag v=+5.13/+6.83 dist ly=621 ± 54 dist pc=190 ± 17 names=b¹ Carinae, HR 3582, HD 77002, CP−58°1301, FK5 1233, HIP 43937, SAO …   Wikipedia

  • V343 Carinae — Starbox short name=V343 Carinae epoch=J2000.0 constell=Carina ra=08h40m37.0s dec=−59°45′40″ spectral=B1.5III appmag v=+4.31 dist ly=1410 ± 280 dist pc=433 ± 86 names=d Carinae, HR 3457, HD 74375, CP−59°1080, FK5 2685, HIP 42568, SAO 236181, GC… …   Wikipedia

  • Miaplacidus — Beta Carinae Beta Carinæ (β Car / β Carinæ) Données d observation (Époque J2000) Ascension droite 09h 13m 12.0s Déclinaison 69° 43′ 02″ Constellation Carène Magnitude apparente …   Wikipédia en Français

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