Alpha Scuti information

α Scuti
	Location of α Scuti (circled)
Observation data; Epoch J2000 Equinox J2000
Constellation	Scutum
Right ascension	18h 35m 12.42776s
Declination	−8° 14′ 38.6529″
Apparent magnitude (V)	3.83
Characteristics
Spectral type	K3III
U−B color index	+1.53
B−V color index	+1.34
Astrometry
Radial velocity (Rv)	+36.50 km/s
Proper motion (μ)	RA: −17.00 mas/yr ; Dec.: −313.52 mas/yr
Parallax (π)	16.38 ± 0.22 mas
Distance	199 ± 3 ly ; (61.1 ± 0.8 pc)
Absolute magnitude (MV)	−0.08
Details
Mass	1.33 M☉
Radius	20 R☉
Luminosity	186 L☉
Surface gravity (log g)	1.96 cgs
Temperature	4,315 K
Metallicity [Fe/H]	−0.04 dex
Rotational velocity (v sin i)	1.7 km/s
Other designations
	α Sct, BD-08°4638, FK5 1482, GC 25385, HD 171443, HIP 91117, HR 6973, LTT 7377, NSV 11056, SAO 142408
Database references
SIMBAD	data

Alpha Scuti, Latinized from α Scuti, is an orange-hued star in the southern constellation of Scutum. Originally part of the Aquila constellation, Alpha Scuti was a latter designation of 1 Aquilae.^[9] It is faintly visible to the naked eye with an apparent visual magnitude of 3.83.^[2] Based upon an annual parallax shift of 16.38 mas as seen from the Earth,^[1] it is located around 199 light years from the Sun. It is moving away from the Sun with a radial velocity of +36.5 km/s.^[4]

^ ^a ^b ^c ^d ^e ^f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
^ ^a ^b ^c ^d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
^ Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". The Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
^ ^a ^b Massarotti, Alessandro; Latham, David W.; Stefanik, Robert P.; Fogel, Jeffrey (2008). "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity". The Astronomical Journal. 135 (1): 209–231. Bibcode:2008AJ....135..209M. doi:10.1088/0004-6256/135/1/209.
^ ^a ^b ^c Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644. Vizier catalog entry
^ ^a ^b ^c Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. Vizier catalog entry
^ Martínez, M. Isabel Pérez; Schröder, K.-P.; Cuntz, M. (2011). "The basal chromospheric Mg ii h+k flux of evolved stars: Probing the energy dissipation of giant chromospheres". Monthly Notices of the Royal Astronomical Society. 414 (1): 418–427. arXiv:1102.4832. Bibcode:2011MNRAS.414..418P. doi:10.1111/j.1365-2966.2011.18421.x. S2CID 59268230. Vizier catalog entry
^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. S2CID 54046583. Vizier catalog entry
^ Wagman, M. (August 1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy. 18 (3): 212. Bibcode:1987JHA....18..209W. doi:10.1177/002182868701800305. S2CID 118445625.

[vanLeeuwen2007-1] ^ ^a ^b ^c ^d ^e ^f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry

[Ducati2002-2] Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.

[Keenan1989-3] Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". The Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.

[Massarotti2008-4] Massarotti, Alessandro; Latham, David W.; Stefanik, Robert P.; Fogel, Jeffrey (2008). "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity". The Astronomical Journal. 135 (1): 209–231. Bibcode:2008AJ....135..209M. doi:10.1088/0004-6256/135/1/209.

[XHIP-5] Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644. Vizier catalog entry

[AllendePrieto-6] Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. Vizier catalog entry

[Perez2011-7] Martínez, M. Isabel Pérez; Schröder, K.-P.; Cuntz, M. (2011). "The basal chromospheric Mg ii h+k flux of evolved stars: Probing the energy dissipation of giant chromospheres". Monthly Notices of the Royal Astronomical Society. 414 (1): 418–427. arXiv:1102.4832. Bibcode:2011MNRAS.414..418P. doi:10.1111/j.1365-2966.2011.18421.x. S2CID 59268230. Vizier catalog entry

[deMedeiros2014-8] De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. S2CID 54046583. Vizier catalog entry

[9] Wagman, M. (August 1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy. 18 (3): 212. Bibcode:1987JHA....18..209W. doi:10.1177/002182868701800305. S2CID 118445625.

Observation data Epoch J2000 Equinox J2000
Location of α Scuti (circled)
Constellation	Scutum
Right ascension	18^h 35^m 12.42776^s^[1]
Declination	−8° 14′ 38.6529″^[1]
Apparent magnitude (V)	3.83^[2]
Characteristics
Spectral type	K3III^[3]
U−B color index	+1.53^[2]
B−V color index	+1.34^[2]
Astrometry

Radial velocity (R_v)	+36.50^[4] km/s
Proper motion (μ)	RA: −17.00^[1] mas/yr Dec.: −313.52^[1] mas/yr
Parallax (π)	16.38 ± 0.22 mas^[1]
Distance	199 ± 3 ly (61.1 ± 0.8 pc)
Absolute magnitude (M_V)	−0.08^[5]

Details

Mass	1.33^[6] `M`_☉
Radius	20^[6] `R`_☉
Luminosity	186^[5] `L`_☉
Surface gravity (log g)	1.96^[6] cgs
Temperature	4,315^[7] K
Metallicity [Fe/H]	−0.04^[5] dex
Rotational velocity (v sin i)	1.7^[8] km/s

Other designations
α Sct, BD-08°4638, FK5 1482, GC 25385, HD 171443, HIP 91117, HR 6973, LTT 7377, NSV 11056, SAO 142408
Database references
SIMBAD	data

Alpha Scuti information

and 24 Related for: Alpha Scuti information

Alpha Scuti

Alpha Ophiuchi

Vega

Alpha Cephei

Altair

Alpha Caeli

Betelgeuse

Alpha Persei Cluster

Asteroseismology

Caelum

Beta Cassiopeiae

Giant star

Pyxis

Tucana

Delphinus

Canis Minor

Variable star

Denebola

Hypergiant

Ursa Minor

Instability strip

Astronomical object

Lyra

Serpens