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11 Sagittae

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11 Sagittae
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]
Distance431 ± 3 ly
(132 ± 1 pc)
Details
Mass2.47[2] M
Radius4.02[2] R
Luminosity127[2] L
Surface gravity (log g)3.62[2] cgs
Temperature9,661[2] K
Metallicity [Fe/H]0.0[5] dex
Rotational velocity (v sin i)34[6] km/s
Age242[5] Myr
Other designations
11 Sge, BD+16°4081, HD 189090, HIP 98324, HR 7622, SAO 105471[3]
Database references
SIMBADdata

11 Sagittae is a blue in the constellation Sagitta with a spectral type of B9III.

Naming

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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]

References

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  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b c d e f 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. ^ a b "11 Sge". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-02-26.
  4. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  5. ^ a b 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.