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| pages=933–936 | doi=10.1051/0004-6361:20041449 | bibcode=2004A&A...427..933K|arxiv = astro-ph/0409753 }}</ref> }}
| pages=933–936 | doi=10.1051/0004-6361:20041449 | bibcode=2004A&A...427..933K|arxiv = astro-ph/0409753 }}</ref> }}
{{Starbox detail
{{Starbox detail
⚫
| mass=0.729<ref name="apj771_1_40"/>
| mass=
| radius=0.86<ref name="aaa367">{{cite journal
| radius={{val|0.7891|0.0144}}<ref name="apj771_1_40"/>
| luminosity={{val|0.4090|0.0040}}<ref name="apj771_1_40"/>
| author=Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A.
⚫
| temperature={{val|5,203|46}}<ref name="apj771_1_40"/>
| title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics
⚫
| metal={{nowrap|−0.43 ± 0.08}}<ref name="apj652"/>
| journal=Astronomy and Astrophysics | volume=367
⚫
| rotation=
| pages=521–524 | date=2001 | doi=10.1051/0004-6361:20000451
| gravity=4.80<ref name="apj131"/>
| bibcode=2001A&A...367..521P
⚫
| age_gyr=4.27<ref name="apj652"/>
|arxiv = astro-ph/0012289 }}</ref>
}}
| luminosity=
⚫
{{Starbox catalog
⚫
| temperature=5,400<ref name="apj131">{{cite journal
⚫
| names=[[Gliese-Jahreiss catalogue|GJ]] 675, [[Harvard Revised catalogue|HR]] 6518, [[Bonner Durchmusterung|BD]] +67°1014, [[Henry Draper catalogue|HD]] 158633, [[Luyten Half-Second catalogue|LHS]] 287, [[Luyten Two-Tenths catalogue|LTT]] 15185, [[General Catalogue of Trigonometric Parallaxes|GCTP]] 3972.00, [[Smithsonian Astrophysical Observatory|SAO]] 17474, [[Hipparcos catalogue|HIP]] 85235.<ref name="SIMBAD"/> }}
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{{Starbox end}}

'''HD 158633''' is a [[main sequence]] star in the northern [[constellation]] [[Draco (constellation)|Draco]]. With an [[apparent visual magnitude]] of
6.43, this star is too faint to be observed with the unaided eye but if can be seen with a small [[telescope]]. Based upon [[Stellar parallax|parallax]] measurements made by the [[Hipparcos]] spacecraft, it is located around 42 [[light year]]s from the Sun.

⚫
This is a [[K-type main sequence star]] with a [[spectral classification]] of K0&nbsp;V. It has about 79% of the [[solar radius|Sun's radius]] and 73% of the [[solar mass]].<ref name="apj771_1_40"/> The star is emitting an [[infrared excess|excess of infrared radiation]] at a wavelength of 70&nbsp;μm.<ref name="apj652"/> It has a low [[metallicity]], with only 37% of the Sun's abundance of elements more massive than helium, and has a relatively high [[proper motion]].<ref name="SIMBAD"/>

⚫
==References==
⚫
{{reflist|refs=

<ref name="apj771_1_40">{{citation
| display-authors=1
| last1=Boyajian | first1=Tabetha S. | last2=von Braun | first2=Kaspar
| last3=van Belle | first3=Gerard | last4=Farrington | first4=Chris
| last5=Schaefer | first5=Gail | last6=Jones | first6=Jeremy
| last7=White | first7=Russel | last8=McAlister | first8=Harold A.
| last9=ten Brummelaar | first9=Theo A. | last10=Ridgway | first10=Stephen
| last11=Gies | first11=Douglas | last12=Sturmann | first12=Laszlo
| last13=Sturmann | first13=Judit | last14=Turner | first14=Nils H.
| last15=Goldfinger | first15=P. J. | last16=Vargas | first16=Norm
| title=Stellar Diameters and Temperatures. III. Main-sequence A, F, G, and K Stars: Additional High-precision Measurements and Empirical Relations
| journal=The Astrophysical Journal | volume=771
| issue=1 | id=40 | pages=31 | date=July 2013
| arxiv=1306.2974 | doi=10.1088/0004-637X/771/1/40
| bibcode=2013ApJ...771...40B | postscript=.
}} See Table 3.</ref>

<ref name="apj131">{{cite journal
| author=Luck, R. Earle; Heiter, Ulrike
| author=Luck, R. Earle; Heiter, Ulrike
| title=Dwarfs in the Local Region | date=2006
| title=Dwarfs in the Local Region | date=2006
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| bibcode=2006AJ....131.3069L
| bibcode=2006AJ....131.3069L
}}</ref>
}}</ref>

⚫
| metal={{nowrap|−0.43 ± 0.08}}<ref name="apj652">{{cite journal
<ref name="apj652">{{cite journal
| author=Beichman, C. A.
| author=Beichman, C. A.
| display-authors=etal
| display-authors=etal
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| pages=1674–1693 | doi=10.1086/508449
| pages=1674–1693 | doi=10.1086/508449
| date=2006 | bibcode=2006ApJ...652.1674B|arxiv = astro-ph/0611682 }}</ref>
| date=2006 | bibcode=2006ApJ...652.1674B|arxiv = astro-ph/0611682 }}</ref>
⚫
| rotation=
⚫
| gravity=4.80<ref name="apj131"/>
⚫
| age={{nowrap|4.27 × 10<sup>9</sup>}}<ref name="apj652"/> }}
⚫
{{Starbox catalog
⚫
| names=[[Gliese-Jahreiss catalogue|GJ]] 675, [[Harvard Revised catalogue|HR]] 6518, [[Bonner Durchmusterung|BD]] +67°1014, [[Henry Draper catalogue|HD]] 158633, [[Luyten Half-Second catalogue|LHS]] 287, [[Luyten Two-Tenths catalogue|LTT]] 15185, [[General Catalogue of Trigonometric Parallaxes|GCTP]] 3972.00, [[Smithsonian Astrophysical Observatory|SAO]] 17474, [[Hipparcos catalogue|HIP]] 85235.<ref name="SIMBAD"/> }}
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{{Starbox end}}


}}
⚫
'''HD 158633''' is a [[main sequence]] star in the [[constellation]] [[Draco (constellation)|Draco]]. This star is too faint to be observed with the unaided eye, but can be seen with a small [[telescope]]. It has a [[spectral classification]] of K0&nbsp;V and has about 86% of the [[solar radius|Sun's radius]].<ref name="aaa367"/> This star is emitting an [[infrared excess|excess of infrared radiation]] at a wavelength of 70&nbsp;μm.<ref name="apj652"/> It has a low [[metallicity]], with only 37% of the Sun's abundance of elements more massive than helium, and has a relatively high [[proper motion]].<ref name="SIMBAD"/>
{{-}}

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==References==
⚫
{{reflist|2}}
{{Nearest star systems|9}}
{{Nearest star systems|9}}


Revision as of 18:45, 28 January 2016

HD 158633
Observation data
Epoch J2000      Equinox J2000
Constellation Draco
Right ascension 17h 25m 00.0985s[1]
Declination +67° 18′ 24.137″[1]
Apparent magnitude (V) 6.43[2]
Characteristics
Spectral type K0 V[2]
U−B color index +0.29[3]
B−V color index +0.76[3]
Astrometry
Radial velocity (Rv)−40[4] km/s
Proper motion (μ) RA: −531.03[1] mas/yr
Dec.: 3.62[1] mas/yr
Parallax (π)78.14 ± 0.51 mas[1]
Distance41.7 ± 0.3 ly
(12.80 ± 0.08 pc)
Absolute magnitude (MV)5.89[5]
Details
Mass0.729[6] M☉
Radius0.7891±0.0144[6] R☉
Luminosity0.4090±0.0040[6] L☉
Surface gravity (log g)4.80[7] cgs
Temperature5203±46[6] K
Metallicity−0.43 ± 0.08[8]
Age4.27[8] Gyr
Other designations
GJ 675, HR 6518, BD +67°1014, HD 158633, LHS 287, LTT 15185, GCTP 3972.00, SAO 17474, HIP 85235.[2]

HD 158633 is a main sequence star in the northern constellation Draco. With an apparent visual magnitude of 6.43, this star is too faint to be observed with the unaided eye but if can be seen with a small telescope. Based upon parallax measurements made by the Hipparcos spacecraft, it is located around 42 light years from the Sun.

This is a K-type main sequence star with a spectral classification of K0 V. It has about 79% of the Sun's radius and 73% of the solar mass.[6] The star is emitting an excess of infrared radiation at a wavelength of 70 μm.[8] It has a low metallicity, with only 37% of the Sun's abundance of elements more massive than helium, and has a relatively high proper motion.[2]

References

  1. ^ a b c d e Perryman, M. A. C.; et al. (1997), "The Hipparcos Catalogue", Astronomy & Astrophysics, 323: L49 – L52, Bibcode:1997A&A...323L..49P
  2. ^ a b c d "LHS 3287 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-14.
  3. ^ a b Hauck, B.; Mermilliod, M. (1998). "uvbyβ photoelectric photometric catalogue". Astronomy and Astrophysics Supplement Series. 129: 431–433. Bibcode:1998A&AS..129..431H. doi:10.1051/aas:1998195.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  4. ^ Wilson, Ralph Elmer (1953). General catalogue of stellar radial velocities. Washington, DC: Carnegie Institution of Washington. Bibcode:1953GCRV..C......0W.
  5. ^ Kovtyukh, V. V.; Soubiran, C.; Belik, S. I. (2004). "A new Böhm-Vitense gap in the temperature range 5560 to 5610 K in the main sequence". Astronomy and Astrophysics. 427: 933–936. arXiv:astro-ph/0409753. Bibcode:2004A&A...427..933K. doi:10.1051/0004-6361:20041449.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  6. ^ a b c d e Boyajian, Tabetha S.; et al. (July 2013), "Stellar Diameters and Temperatures. III. Main-sequence A, F, G, and K Stars: Additional High-precision Measurements and Empirical Relations", The Astrophysical Journal, 771 (1): 31, arXiv:1306.2974, Bibcode:2013ApJ...771...40B, doi:10.1088/0004-637X/771/1/40, 40. See Table 3.
  7. ^ Luck, R. Earle; Heiter, Ulrike (2006). "Dwarfs in the Local Region". The Astronomical Journal. 131: 3069–3092. Bibcode:2006AJ....131.3069L. doi:10.1086/504080.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  8. ^ a b c Beichman, C. A.; et al. (2006). "New Debris Disks Around Nearby Main-Sequence Stars: Impact on the Direct Detection of Planets". The Astrophysical Journal. 652 (2): 1674–1693. arXiv:astro-ph/0611682. Bibcode:2006ApJ...652.1674B. doi:10.1086/508449.



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