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11 Sagittae

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

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

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).

References

1. ^ 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. ^ 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. ^ "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. ^ 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.

v t e Constellation of Sagitta
List of stars in Sagitta Sagitta in Chinese astronomy
Stars	Bayer α (Sham) β γ δ ε ζ η θ Flamsteed 1 2 3 9 10 11 13 (x) 15 (z) 18 Variable R S U V WY WZ FG HM HT QR QT QX HD 231701 (Uruk) Other Gaia17bpp
Exoplanets HD 231701 b (Babylonia)
Star clusters Messier 71
Nebulae	NGC 6866 Other Abell 63 M1-67 Necklace Nebula
Category

• B-type giants
• Sagitta
• Flamsteed objects
• Henry Draper Catalogue objects
• Bright Star Catalogue objects
• Hipparcos objects