Alpha Scuti

{{Short description|Star in the constellation Scutum}}

{{Starbox begin

| name = α Scuti

}}

{{Starbox image

| image=

{{Location mark

|image=Scutum constellation map.svg|alt=|float=center|width=240

|label=|position=right

|mark=Red circle.svg|mark_width=15|mark_link=α Scuti

|x=585|y=385

}}

| caption=Location of α Scuti (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Scutum

| ra = {{RA|18|35|12.42776}}{{cite journal | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | last1=Van Leeuwen | first1=F. | s2cid=18759600 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-S?HIP%2091117 Vizier catalog entry]

| dec = {{DEC|-08|14|38.6529}}

| appmag_v = 3.83{{cite journal |bibcode=2002yCat.2237....0D |title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system |journal=CDS/ADC Collection of Electronic Catalogues |volume=2237 |last1=Ducati |first1=J. R. |year=2002 }}

}}

{{Starbox character

| class = K3III{{cite journal | bibcode=1989ApJS...71..245K | doi=10.1086/191373| title=The Perkins catalog of revised MK types for the cooler stars| journal=The Astrophysical Journal Supplement Series| volume=71| pages=245| year=1989| last1=Keenan| first1=Philip C.| last2=McNeil| first2=Raymond C.}}

| b-v = +1.34

| u-b = +1.53

}}

{{Starbox astrometry

| radial_v = +36.50{{cite journal | bibcode=2008AJ....135..209M | doi=10.1088/0004-6256/135/1/209 | title=Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity | journal=The Astronomical Journal | volume=135 | pages=209–231 | year=2008 | last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W. | last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey | issue=1 | doi-access=free }}

| prop_mo_ra = −17.00

| prop_mo_dec = −313.52

| parallax = 16.38

| p_error = 0.22

| parallax_footnote =

| absmag_v = −0.08{{cite XHIP|91117}}

}}

{{Starbox detail

| mass = 1.33{{cite journal | bibcode=1999A&A...352..555A | arxiv=astro-ph/9911002 | title=Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures | journal=Astronomy and Astrophysics | volume=352 | pages=555–562 | last1=Allende Prieto | first1=C. | last2=Lambert | first2=D. L. | year=1999 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/352/555/table1&Name=HIP91117 Vizier catalog entry]

| radius = 20

| temperature = 4,315{{cite journal | arxiv=1102.4832 | bibcode=2011MNRAS.414..418P | doi=10.1111/j.1365-2966.2011.18421.x | title=The basal chromospheric Mg ii h+k flux of evolved stars: Probing the energy dissipation of giant chromospheres | journal=Monthly Notices of the Royal Astronomical Society | volume=414 | pages=418–427 | year=2011 | last1=Martínez | first1=M. Isabel Pérez | last2=Schröder | first2=K.-P. | last3=Cuntz | first3=M. | issue=1 | doi-access=free | s2cid=59268230 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/MNRAS/414/418/table1&HD=171443 Vizier catalog entry]

| luminosity = 186

| rotational_velocity = 1.7{{cite journal | bibcode=2014A&A...561A.126D | doi=10.1051/0004-6361/201220762 | arxiv=1312.3474 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy & Astrophysics | volume=561 | pages=A126 | year=2014 | last1=De Medeiros | first1=J. R. | last2=Alves | first2=S. | last3=Udry | first3=S. | last4=Andersen | first4=J. | last5=Nordström | first5=B. | last6=Mayor | first6=M. | s2cid=54046583 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/561/A126/table1&HD=171443 Vizier catalog entry]

| gravity = 1.96

| metal_fe = −0.04

}}

{{Starbox catalog

| names = α Sct, BD−08°4638, FK5 1482, GC 25385, HD 171443, HIP 91117, HR 6973, LTT 7377, NSV 11056, SAO 142408

}}

{{Starbox reference

| Simbad = Alpha+Scuti

}}

{{Starbox end}}

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.{{cite journal

| last=Wagman | first=M.

| title=Flamsteed's Missing Stars

| journal=Journal for the History of Astronomy

| volume=18 | number=3 | page=212 |date=August 1987

| bibcode=1987JHA....18..209W | doi=10.1177/002182868701800305| s2cid=118445625

}} It is faintly visible to the naked eye with an apparent visual magnitude of 3.83. Based upon an annual parallax shift of 16.38 mas as seen from the Earth, 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.