14 Sagittae

{{Short description|Binary star system in the constellation Aquila}}

{{Starbox begin

| name = 14 Sagittae

}}

{{Starbox observe

| epoch = J2000

| constell = Aquila

| ra = {{RA|20|03|30.01519}}

| dec = {{DEC|+16|01|52.5065}}

| appmag_v = 5.89

}}

{{Starbox character

| class = {{nowrap|B9p HgMn}}

| b-v = −0.06

| u-b = −0.44

| variable =

}}

{{Starbox astrometry

| radial_v = −21.7

| prop_mo_ra = +5.28

| prop_mo_dec = −8.99

| parallax = 4.9142

| p_error = 0.0849

| parallax_footnote =

| absmag_v = −0.72

}}

{{Starbox orbit

| reference =

| period_unitless = 61.541 d

| eccentricity = 0.49

| periastron = 2440799.01 JD

| periarg = 345

| k1 = 4.2

}}

{{Starbox detail

| component1 = 14 Sge A

| mass =

| radius =

| luminosity = 291.53

| temperature = 13,200

| metal_fe =

| gravity = 3.60

| rotational_velocity = {{Val|7.0|0.5}}

| age_gyr =

}}

{{Starbox catalog

| names = {{odlist | F=14 Sge | BD=+15°4033 | HD=190229 | HIP=98754 | HR=7664 | SAO=105615 | GC=27812 }}

}}

{{Starbox reference

| Simbad = 14+Sge

}}

14 Sagittae is a binary star system in the equatorial constellation of Aquila. 14 Sagittae is the Flamsteed designation. It appears as a sixth magnitude star, near the lower limit of visibility to the naked eye, having an apparent visual magnitude of 5.89. The system is located 660 light years away, as determined from its annual parallax shift of {{Val|4.91|ul=mas}}. It is moving closer to the Earth with a heliocentric radial velocity of –22 km/s.

This is a single-lined spectroscopic binary with an orbital period of 61.5 days and an eccentricity of 0.49. The visible component is a chemically peculiar mercury-manganese star with a stellar classification of {{nowrap|B9p HgMn}}. It is narrow-lined with a projected rotational velocity of 7 km/s. The star is radiating 292 times the Sun's luminosity from its photosphere at an effective temperature of 13,200 K.

References

{{reflist|refs=

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{{citation

| title=Elemental abundance analyses with DAO spectrograms: XL

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| journal=Astronomische Nachrichten | postscript=.

| volume=338 | issue=5 | pages=584–597 | date=June 2017

| doi=10.1002/asna.201613214 | bibcode=2017AN....338..584A }}

{{citation

| title=Elemental Abundance Analyses with Coadded DAO Spectrograms - Part Five - the Mercury-Manganese Stars Phi-Herculis 28-HERCULIS and HR:7664

| last1=Adelman | first1=S. J. | postscript=.

| journal=Monthly Notices of the Royal Astronomical Society

| volume=235 | issue=3 | page=763 | date=December 1988

| doi=10.1093/mnras/235.3.763 | bibcode=1988MNRAS.235..763A | doi-access=free }}

}}

External links

[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%207664 HR 7664]
[http://aladin.u-strasbg.fr/AladinPreview?-c=20+03+30.0158%2B16+01+52.516&ident=HD+190229&submit=Aladin+previewer Image 14 Sagittae]

Category:Mercury-manganese stars

Category:Spectroscopic binaries

Category:Aquila (constellation)

Category:B-type giants