Upsilon Herculis

{{Starbox begin

| name = Upsilon Herculis

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Hercules

| ra = {{RA|16|02|47.89764}}

| dec = {{DEC|+46|02|12.1371}}

| appmag_v = 4.74

}}

{{Starbox character

| class = B9 III

| b-v = −0.11

| u-b = −0.32

| r-i =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|+4.1|0.5}}

| prop_mo_ra = +55.42

| prop_mo_dec = −61.29

| parallax = 8.78

| p_error = 0.18

| parallax_footnote =

| absmag_v = 0.32

}}

{{Starbox detail

| source =

| mass =

| radius = 4.0

| luminosity = 173

| temperature = 10,152

| gravity = 3.80

| metal_fe = −0.30

| rotational_velocity = 7.5

| age_myr = 254

}}

{{Starbox catalog

| names = υ Her, 6 Her, BD+46°2142, HD 144206, HIP 78592, HR 5982, SAO 45865

}}

{{Starbox reference

| Simbad = ups+Her

}}

Upsilon Herculis (υ Her) is a solitary star in the constellation Hercules. It is visible to the naked eye with an apparent visual magnitude of 4.74. Based upon an annual parallax shift of 8.78 mas as seen from Earth, it is located around 371 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.09 due to interstellar dust.

At an estimated age of 254 million years, this appears to be an evolved B-type giant star with a stellar classification of B9 III. It is a mercury-manganese chemically peculiar star, indicating the spectrum shows abnormal abundances of these elements. The star has about four times the radius of the Sun and it radiates 173 times the Sun's luminosity from its photosphere at an effective temperature of 10,152 K.

References

{{reflist|refs=

{{citation

| title=Validation of the new Hipparcos reduction

| last1=van Leeuwen | first1=F.

| journal=Astronomy and Astrophysics

| volume=474 | issue=2 | pages=653–664 | date=2007

| arxiv=0708.1752 | bibcode=2007A&A...474..653V

| doi=10.1051/0004-6361:20078357 | s2cid=18759600 | postscript=. }}

{{citation

| last1=Pasinetti Fracassini | first1=L. E. | last2=Pastori | first2=L.

| title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)

| edition=3rd | volume=367 | pages=521–524 | date=February 2001

| doi=10.1051/0004-6361:20000451 | bibcode=2001A&A...367..521P

| arxiv=astro-ph/0012289 | postscript=. | journal=Astronomy and Astrophysics| s2cid=425754 }}

{{citation

| title=Spatial distribution and kinematics of OB stars

| last1=Gontcharov | first1=G. A.

| journal=Astronomy Letters

| volume=38 | issue=11 | pages=694–706 | date=November 2012

| doi=10.1134/S1063773712110035 | bibcode=2012AstL...38..694G

| arxiv=1606.09028 | s2cid=119108982 | postscript=. }}

{{citation

| last1=Smith | first1=K. C. | last2=Dworetsky | first2=M. M.

| title=Elemental Abundances in Normal Late B-Stars and Hgmn-Stars from Co-Added IUE Spectra - Part One - Iron Peak Elements

| journal=Astronomy and Astrophysics

| volume=274 | issue=2 | page=335 | date=July 1993

| bibcode=1993A&A...274..335S | postscript=. }}

{{citation

| last1=Cowley | first1=A. | last2=Cowley | first2=C.

| last3=Jaschek | first3=M. | last4=Jaschek | first4=C.

| title=A study of the bright A stars. I. A catalogue of spectral classifications

| journal=Astronomical Journal | display-authors=1

| volume=74 | pages=375–406 | date=April 1969

| doi=10.1086/110819 | bibcode=1969AJ.....74..375C }}

{{citation

| title=Elemental abundance analyses with DAO spectrograms. XXIX. The mercury-manganese stars 53 Tau, β Tau, γ Crv, and υ Her

| display-authors=1

| last1=Adelman | first1=S. J. | last2=Caliskan | first2=H.

| last3=Gulliver | first3=A. F. | last4=Teker | first4=A.

| journal=Astronomy and Astrophysics | postscript=.

| volume=447 | issue=2 | date=February 2006 | pages=685–690

| doi=10.1051/0004-6361:20053581 | bibcode=2006A&A...447..685A | doi-access=free }}

{{citation

| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.

| title=A catalogue of multiplicity among bright stellar systems

| journal=Monthly Notices of the Royal Astronomical Society

| volume=389 | issue=2 | pages=869–879 | date=September 2008

| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E

| postscript=. |arxiv = 0806.2878 | s2cid=14878976 }}

{{citation

| display-authors=1 | last1=McDonald | first1=I.

| last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L.

| title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars

| journal=Monthly Notices of the Royal Astronomical Society

| volume=427 | issue=1 | pages=343–57 | date=2012

| bibcode=2012MNRAS.427..343M | arxiv=1208.2037

| doi=10.1111/j.1365-2966.2012.21873.x | doi-access=free | s2cid=118665352 | postscript=. }}

{{citation

| last1=Mermilliod | first1=J.-C.

| title=Compilation of Eggen's UBV data, transformed to UBV (unpublished)

| journal=Catalogue of Eggen's UBV Data

| year=1986 | publisher=SIMBAD

| bibcode=1986EgUBV........0M | postscript=. }}

{{cite simbad

| title=* ups Her -- Star

| access-date=2017-04-05 | postscript=. }}

}}

Category:B-type giants

Category:Hercules (constellation)

Herculis, Upsilon

Category:Durchmusterung objects