HD 149837

{{Starbox begin

| name=HD 149837

}}

{{Starbox observe 2s

| epoch=J2000

| constell=Ara

| component1 = A

| ra1={{RA|16|40|50.48327}}

| dec1={{DEC|-60|26|47.2071}}

| appmag_v1=6.18

| component2 = B

| ra2 = {{RA|16|40|50.61454}}

| dec2 = {{DEC|-60|26|45.8673}}

| appmag_v2 = 8.98

}}

{{Starbox character

| component1 = A

| class = F6V

| b-v=+0.17

| u-b=

| appmag_1_passband = B

| appmag_1 = 6.660

| appmag_3_passband = J

| appmag_3 = 5.217

| appmag_4_passband = H

| appmag_4 = 4.969

| appmag_5_passband = K

| appmag_5 = 4.886

}}

{{Starbox astrometry

| component1 = A

| radial_v = {{val|3.9|0.2}}

| prop_mo_ra = +59.084

| prop_mo_dec = {{val|-73.274}}

| pm_footnote =

| parallax = 31.3707

| p_error = 0.0212

| parallax_footnote =

| absmag_v = +3.69

| component2 = B

| prop_mo_ra2 = +57.834

| prop_mo_dec2 = {{val|-76.449}}

| pm_footnote2 =

| parallax2 = 31.3785

| p_error2 = 0.0402

| parallax_footnote2 =

}}

{{Starbox detail

| component1= A

| mass=1.25

| radius=1.348

| luminosity=2.634

| temperature={{val|6401|80|fmt=commas}}

| gravity=4.16

| metal_fe=−0.08

| age_gyr=2.90

| component2= B

| mass2=0.79

| radius2=0.67

| luminosity2=0.248

| temperature2=4,987

}}

{{Starbox catalog

| names=CD−60°6381, HD 149837, HIP 81657, HR 6177, SAO 253651

}}

{{Starbox reference

| Simbad=HR+6177

}}

HD 149837 is a binary star in the southern constellation of Ara. Parallax measurements give a distance of 103.9 light-years.

The components of this system have an estimated separation of 45.8 astronomical units. The primary, of apparent magnitude +6.24, can be viewed to the naked eye only from sufficiently dark skies, far from light pollution. Its spectrum mathces a class of F6V, making it a F-type main-sequence star. Around 1.25 times more massive than the Sun and 2.9 billion years old, it has 1.35 times the Sun's radius and irradiates 2.6 times the Sun's luminosity from its photosphere at an effective temperature of 6,401 K.

The secondary's apparent magnitude is 8.98, too faint to be viewed with the naked eye. It has 0.79 times the mass of the Sun, 0.67 times the radius and irradiates 25% of its luminosity at an effective temperature of 4,987 K.

References

{{reflist|refs=

{{Cite web |title=Limiting Magnitude {{!}} COSMOS |url=https://astronomy.swin.edu.au/cosmos/l/Limiting+Magnitude |access-date=2025-06-01 |website=astronomy.swin.edu.au}}

{{cite journal

| display-authors=1

| last1=Gray | first1=R. O.

| last2=Corbally | first2=C. J.

| last3=Garrison | first3=R. F.

| last4=McFadden | first4=M. T.

| last5=Bubar | first5=E. J.

| last6=McGahee | first6=C. E.

| last7=O'Donoghue | first7=A. A.

| last8=Knox | first8=E. R.

| title=Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample

| journal=The Astronomical Journal

| volume=132 | issue=1 | pages=161–170 | date=July 2006

| doi=10.1086/504637

| bibcode=2006AJ....132..161G

| arxiv=astro-ph/0603770

| s2cid=119476992 }}

{{Cite journal| doi = 10.1134/S1063773706110065| bibcode=2006AstL...32..759G| title = Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system| journal = Astronomy Letters| volume = 32| issue = 11| pages = 759–771| date = November 2006| last1 = Gontcharov | first1 = G. A.|arxiv = 1606.08053 | s2cid=119231169}}

{{cite journal

| last1=Nicolet | first1=B.

| title=Photoelectric photometric Catalogue of homogeneous measurements in the UBV System

| journal=Astronomy and Astrophysics Supplement Series

| volume=34 | pages=1–49 | date=1978

| bibcode=1978A&AS...34....1N

}}

{{cite journal

| title=From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs

| last1=Tokovinin | first1=Andrei

| journal=The Astronomical Journal

| volume=147 | issue=4 | id=87 | pages=14

| date=April 2014

| doi=10.1088/0004-6256/147/4/87

| bibcode=2014AJ....147...87T

|arxiv = 1401.6827 | s2cid=56066740 }}

{{Cite journal |last1=Casagrande |first1=L. |last2=Schönrich |first2=R. |last3=Asplund |first3=M. |last4=Cassisi |first4=S. |last5=Ramírez |first5=I. |last6=Meléndez |first6=J. |last7=Bensby |first7=T. |last8=Feltzing |first8=S. |date=June 2011 |title=New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey |journal=Astronomy and Astrophysics |language=en |volume=530 |pages=A138 |doi=10.1051/0004-6361/201016276 |arxiv=1103.4651 |bibcode=2011A&A...530A.138C |issn=0004-6361}}

{{Cite journal |last1=Schofield |first1=Mathew |last2=Chaplin |first2=William J. |last3=Huber |first3=Daniel |last4=Campante |first4=Tiago L. |last5=Davies |first5=Guy R. |last6=Miglio |first6=Andrea |last7=Ball |first7=Warrick H. |last8=Appourchaux |first8=Thierry |last9=Basu |first9=Sarbani |last10=Bedding |first10=Timothy R. |last11=Christensen-Dalsgaard |first11=Jørgen |last12=Creevey |first12=Orlagh |last13=García |first13=Rafael A. |last14=Handberg |first14=Rasmus |last15=Kawaler |first15=Steven D. |date=2019-03-01 |title=The Asteroseismic Target List for Solar-like Oscillators Observed in 2 minute Cadence with the Transiting Exoplanet Survey Satellite |bibcode=2019ApJS..241...12S |arxiv=1901.10148 |journal=The Astrophysical Journal Supplement Series |volume=241 |issue=1 |pages=12 |doi=10.3847/1538-4365/ab04f5 |doi-access=free |issn=0067-0049}}

{{cite journal |bibcode=2002A&A...384..180F |title=The Tycho double star catalogue |last1=Fabricius |first1=C. |last2=Høg |first2=E. |last3=Makarov |first3=V. V. |last4=Mason |first4=B. D. |last5=Wycoff |first5=G. L. |last6=Urban |first6=S. E. |journal=Astronomy and Astrophysics |date=2002 |volume=384 |page=180 |doi=10.1051/0004-6361:20011822 }}

}}

External links

[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%206177 HR 6177]
[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J16408-6027AB CCDM J16408-6027]
[http://aladin.u-strasbg.fr/AladinPreview?-c=16+40+50.4836-60+26+47.192&ident=CCDM+J16408-6027AB&submit=Aladin+previewer Image of HD 149837]

Category:Ara (constellation)

Category:Binary stars

Category:F-type main-sequence stars