Upsilon Herculis - Misplaced Pages

Star in the constellation Hercules

Upsilon Herculis
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Hercules
Right ascension	16 02 47.89764
Declination	+46° 02′ 12.1371″
Apparent magnitude (V)	4.74
Characteristics
Spectral type	B9 III
U−B color index	−0.32
B−V color index	−0.11
Astrometry

Radial velocity (R_v)	+4.1±0.5 km/s
Proper motion (μ)	RA: +55.42 mas/yr Dec.: −61.29 mas/yr
Parallax (π)	8.78 ± 0.18 mas
Distance	371 ± 8 ly (114 ± 2 pc)
Absolute magnitude (M_V)	0.32

Details

Radius	4.0 `R`_☉
Luminosity	173 `L`_☉
Surface gravity (log g)	3.80 cgs
Temperature	10,152 K
Metallicity	−0.30 dex
Rotational velocity (v sin i)	7.5 km/s
Age	254 Myr

Other designations
υ Her, 6 Her, BD+46° 2142, HD 144206, HIP 78592, HR 5982, SAO 45865.
Database references
SIMBAD	data

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

^ van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
^ Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M.
^ Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819
^ Adelman, S. J.; et al. (February 2006), "Elemental abundance analyses with DAO spectrograms. XXIX. The mercury-manganese stars 53 Tau, β Tau, γ Crv, and υ Her", Astronomy and Astrophysics, 447 (2): 685–690, Bibcode:2006A&A...447..685A, doi:10.1051/0004-6361:20053581.
^ Gontcharov, G. A. (November 2012), "Spatial distribution and kinematics of OB stars", Astronomy Letters, 38 (11): 694–706, arXiv:1606.09028, Bibcode:2012AstL...38..694G, doi:10.1134/S1063773712110035, S2CID 119108982.
Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (3rd ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
^ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
^ Smith, K. C.; Dworetsky, M. M. (July 1993), "Elemental Abundances in Normal Late B-Stars and Hgmn-Stars from Co-Added IUE Spectra - Part One - Iron Peak Elements", Astronomy and Astrophysics, 274 (2): 335, Bibcode:1993A&A...274..335S.
"* ups Her -- Star". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-04-05.{{cite web}}: CS1 maint: postscript (link)
Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.

Constellation of Hercules

Stars

Bayer	α (Rasalgethi) β (Kornephoros) γ δ (Sarin) ε ζ η θ ι κ (Marsic) λ (Maasym) μ ν ξ ο π ρ σ τ υ φ χ ψ ψ ω (Cujam)
Flamsteed	14 29 (h) 30 (g) 42 45 (l) 52 60 68 (u) 69 (e) 72 (w) 89 93 98 99 (b) 102 104 (A) 106 109 110 111 112 32 Oph
Variable	X AC AM BL DI DQ V446 V533 V772 V777 V838 V1674
HR	6669 6697 6806
HD	146389 (Irena) 147506 (Hunor) 149026 (Ogma) 152843 154345 155358 156668 159062 164595 164922
Other	BD +17° 3248 Furuhjelm 46 GD 362 Gliese 623 Gliese 638 Gliese 649 Gliese 686 GJ 3991 HAT-P-14 (Franz) HAT-P-18 HAT-P-67 Hercules X-1 GSC 02620-00648 Ross 640 TOI-2119 TrES-3 (Pipoltr) TYC 1031-1262-1 WASP-103 WISE 1738+2732 WISE 1741+2553

Exoplanets	14 Herculis b c HAT-P-14b (Sissi) HD 149026 b (Smertrios) HD 164922 b c WASP-103b

Star clusters	Messier 13 Messier 92 NGC 6229 Palomar 14

Nebulae	Abell 39 NGC 6210

Galaxies

NGC	6028 6039 6040 6041 6042 6043 6044 6045 6046 6047 6052 6053 6054 6055 6056 6057 6061 6078 6158 6166 6181 6207 6212 6239 6261 6263 6308 6452 6560
Other	1ES 1741+196 2MASX J16270254+4328340 3C 345 3C 346 A2261-BCG Arp 272 (NGC 6050 and IC 1179) AT2018cow IC 1182 IC 1189 Hercules Dwarf Hercules A IC 1192 IC 4617 Markarian 501 MCG+07-33-027 PGC 2046648 QSR J1819+3845 RX J1633.3+4718 UGC 11105

Galaxy clusters	Abell 2152 Abell 2199 Hercules Cluster Hercules Superclusters Zwicky's Triplet

Astronomical events	LBG-2377