11 Sagittae

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11 Sagittae
Sagitta constellation map.svg
Red circle.svg
Location of 11 Sagittae (circled)
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Sagitta
Right ascension 19h 57m 45.44547s [1]
Declination +16° 47 20.9781 [1]
Apparent magnitude  (V)5.53 [2]
Characteristics
Spectral type B9III [3]
Astrometry
Radial velocity (Rv)−26.10±1.6 [4]  km/s
Proper motion (μ)RA: 11.609 [1]   mas/yr
Dec.: 18.605 [1]   mas/yr
Parallax (π)7.5596 ± 0.0600  mas [1]
Distance 431 ± 3  ly
(132 ± 1  pc)
Details
Mass 2.47 [2]   M
Radius 4.02 [2]   R
Luminosity 127 [2]   L
Surface gravity (log g)3.62 [2]   cgs
Temperature 9,661 [2]   K
Metallicity [Fe/H]0.0 [5]   dex
Rotational velocity (v sin i)34 [6]  km/s
Age 242 [5]   Myr
Other designations
11 Sge, BD+16°4081, HD  189090, HIP  98324, HR  7622, SAO  105471 [3]
Database references
SIMBAD data

11 Sagittae is a star in the constellation Sagitta. It is a blue giant with a spectral classification of B9III and has evolved off the main sequence.

Naming

It is in the Chinese asterism 左旗 (Zuǒ Qí), or Left Flag which consists of 11 Sagittae, γ Sagittae, α Sagittae, β Sagittae, δ Sagittae, ζ Sagittae, 13 Sagittae, 14 Sagittae and ρ Aquilae. Consequently, the Chinese name for γ Sagittae itself is 左旗七 (Zuǒ Qí qī, English: the Seventh Star of Left Flag).[ citation needed ]

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<span class="mw-page-title-main">Rho Aquilae</span> Star in the constellation Delphinus

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11 Boötis is a giant star in the northern constellation of Boötes, located about 332 light years away from the Sun. It is near the lower limit of visibility to the naked eye, appearing as a dim, white-hued star with an apparent visual magnitude of 6.23. This body is moving closer to the Earth with a heliocentric radial velocity of −24 km/s.

<span class="mw-page-title-main">Alpha Sagittae</span> Star in the constellation Sagitta

Alpha Sagittae, formally named Sham, is a single star in the northern constellation of Sagitta. Alpha Sagittae is the Bayer designation, which is latinized from α Sagittae and abbreviated Alpha Sge or α Sge. It is visible to the naked eye as a yellow-hued star with an apparent visual magnitude of +4.38. Despite the name, this is not the brightest star in the constellation – that distinction belongs to Gamma Sagittae. Based upon parallax measurements, Alpha Sagittae is approximately 382 light-years from the Sun. It is moving further away from the Earth with a heliocentric radial velocity of 1.7 km/s.

<span class="mw-page-title-main">9 Vulpeculae</span> Star in the constellation Vulpecula

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<span class="mw-page-title-main">HD 149989</span> Star in the constellation Ara

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<span class="mw-page-title-main">Beta Sagittae</span> Star in the constellation Sagitta

Beta Sagittae, Latinized from β Sagittae, is a single star in the northern constellation of Sagitta. It is a faint star but visible to the naked eye with an apparent visual magnitude of 4.38. Based upon an annual parallax shift of 7.7237 mas as seen from the Gaia satellite, it is located 420 light years from the Sun. The star is moving closer to the Sun with a radial velocity of −22 km/s.

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μ Ophiuchi, Latinized as Mu Ophiuchi, is a solitary, blue-white hued star in the equatorial constellation of Ophiuchus. It is visible to the naked as a faint point of light with an apparent visual magnitude of 4.62. This object is located approximately 760 light years away from the Sun based on parallax, but is drifting closer with a radial velocity of −18.5 km/s.

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Gamma Sagittae, Latinized from γ Sagittae, is the brightest star in northern constellation of Sagitta. A single star, it is visible to the naked eye with an apparent visual magnitude of +3.47. Based upon an annual parallax shift of 12.62 mas as seen from Earth, it is located about 288 light-years from the Sun. It is moving closer to the Sun with a radial velocity of −34 km/s.

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<span class="mw-page-title-main">Delta Sagittae</span> Binary star system in the constellation Sagitta

Delta Sagittae is a binary star in the constellation of Sagitta, with an apparent magnitude of +3.68. The primary component is a red M-type bright giant, and the secondary is a B-type main-sequence star. It is approximately 430 light years from Earth, based on its Gaia Data Release 2 parallax.

<span class="mw-page-title-main">3 Monocerotis</span> Star in Monoceros constellation

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<span class="mw-page-title-main">29 Persei</span> Star in the constellation Perseus

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<span class="mw-page-title-main">31 Persei</span> Star in the constellation Perseus

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HD 167257 is a solitary star in the southern constellation Telescopium. It has an apparent magnitude of 6.05, making it faintly visible to the naked eye. Parallax measurements place the star at a distance of 420 light years and has a radial velocity of −5.1 km/s, which is poorly constrained. This indicates that it is drifting towards the Solar System.

<span class="mw-page-title-main">Eta Octantis</span> Star in the constellation of Octans

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HD 35184 is a solitary star in the southern circumpolar constellation Mensa. It has an apparent magnitude of 6.50, which the maximum naked eye visibility. Located 375 light years away, it is receding with a heliocentric radial velocity of 13.6 km/s.

13 Delphini is a binary star in the equatorial constellation Delphinus, with a combined apparent magnitude of 5.64. The system is located at a distance of 471 light years but is approaching the Solar System with a heliocentric radial velocity of about −7 km/s.

References

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  2. 1 2 3 4 5 6 Stassun, Keivan G.; et al. (2019-10-01). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694 . Bibcode:2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467 . hdl: 1721.1/124721 . ISSN   0004-6256. S2CID   166227927.
  3. 1 2 "11 Sge". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2022-02-26.
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  5. 1 2 Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771–782. arXiv: 1606.08814 . Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. S2CID   118345778.
  6. Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573 (1): 359–365. Bibcode:2002ApJ...573..359A. doi: 10.1086/340590 .