Zeta Geminorum

Zeta Geminorum
Zeta Geminorum
Observation data
Epoch J2000      Equinox J2000
Constellation Gemini
Right ascension 07h 04m 06.5s
Declination +20° 34′ 13.1″
Apparent magnitude (V) 3.7 to 4.2
Characteristics
Spectral type G0Ibv
B−V color index 0.88
Variable type Classical Cepheid
Astrometry
Radial velocity (Rv) 6.7 km/s
Proper motion (μ) RA: −5.72 ±0.82 mas/yr
Dec.: −0.96 ±0.58 mas/yr
Parallax (π) 2.79 ± 0.81 mas
Distance approx. 1200 ly
(approx. 400 pc)
Details
Temperature 5,300 to 5,800 K
Other designations
Mekbuda, ζ Gem, 43 Gem, HR 2650, BD +20 1687, HD 52973, SAO 79031, FK5 269, ADS 5742 A, HIP 34088, TYC 1353-1550-1.

Zeta Geminorum (ζ Gem, ζ Geminorum) is a star in the constellation Gemini. It has the traditional name Mekbuda.

The name Mekbuda has roots in ancient Arabic where it and the star Mebsuta (Epsilon Geminorum) were the paws of a lion. Mekbuda comes from a phrase meaning the lion's folded paw.

In Chinese, 井宿 (Jǐng Su), meaning Well (asterism), refers to an asterism consisting of ζ Geminorum, μ Geminorum, γ Geminorum, ν Geminorum, ξ Geminorum, ε Geminorum, 36 Geminorum and λ Geminorum.[1] Consequently, ζ Geminorum itself is known as 井宿七 (Jǐng Su qī, English: the Seventh Star of Well.)[2]

Structure

It is located on the outstretched left "leg" of the twin Pollux. It is a Cepheid variable star and as such has a variable apparent magnitude of +3.7 to +4.2, with period of approximately 10.2 days. The star is approximately 1200 light years from Earth. Mekbuda is a supergiant.

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



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Look at other dictionaries:

  • Zeta Geminorum — (ζ Gem / ζ Geminorum) Données d observation (Époque J2000) Ascension droite 07h 04m 6.53s Déclinaison 20° 34′ 13.1″ Constellation Gémeaux Magnitude apparente …   Wikipédia en Français

  • Zeta Geminorum — Mekbuda („Eingezogene“) ist der Name des Sterns ζ (zeta) Geminorum im Sternbild Zwillinge. Mekbuda ist ein veränderlicher Stern vom Typ Delta Cephei, dessen scheinbare Helligkeit mit einer Periode von 10,152083 Tagen zwischen +3,61 m und +4,15 m… …   Deutsch Wikipedia

  • Zeta-Geminorum-Sterne — Zeta Geminorum Sterne,   eine Untergruppe der Delta Cephei Sterne (Cepheiden), deren Mitglieder als Besonderheit eine symmetrische Lichtkurve zeigen, bei der Helligkeitsanstieg und abfall gleich lang sind …   Universal-Lexikon

  • Zeta Geminorum — noun a star in the constellation Gemini Syn: Mekbuda …   Wiktionary

  • Zeta Gem — Zeta Geminorum Zeta Geminorum (ζ Gem / ζ Geminorum) Données d observation (Époque J2000) Ascension droite 07h 04m 6.53s Déclinaison 20° 34′ 13.1″ Constellation Gémeaux Magnitude apparente …   Wikipédia en Français

  • Zeta Arietis — Constelación Aries Ascensión recta α 03h 14min 54,10s Declinación δ +21º 02’ 40,0’’ Distancia 262 …   Wikipedia Español

  • Zeta Telescopii — Constelación Telescopium Ascensión recta α 18h 28min 49,86s Declinación δ 49º 04’ 14,1’’ Distancia …   Wikipedia Español

  • 43 Geminorum — Zeta Geminorum Zeta Geminorum (ζ Gem / ζ Geminorum) Données d observation (Époque J2000) Ascension droite 07h 04m 6.53s Déclinaison 20° 34′ 13.1″ Constellation Gémeaux Magnitude apparente …   Wikipédia en Français

  • Ζ Geminorum — Zeta Geminorum Zeta Geminorum (ζ Gem / ζ Geminorum) Données d observation (Époque J2000) Ascension droite 07h 04m 6.53s Déclinaison 20° 34′ 13.1″ Constellation Gémeaux Magnitude apparente …   Wikipédia en Français

  • Epsilon Geminorum — ε Geminorum Location of ε Geminorum (upper right of center). Observation data Epoch J2000      Equinox J2000 …   Wikipedia

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