14 Herculis

Starbox begin
name = 14 Herculis Starbox image


caption = 14 Herculis Starbox observe
epoch = J2000.0
constell = Hercules
ra = RA|16|10|23.59
dec = DEC|+43|49|18.2
appmag_v = +6.67 Starbox character
class = K0V
b-v = 0.88
u-b = 0.67
variable = "None" Starbox astrometry
radial_v = −5.5
prop_mo_ra = 132.52
prop_mo_dec = −298.38
parallax = 55.11
p_error = .59
dist_ly = 59
dist_pc = 18.1
absmag_v = +5.38 Starbox detail
age = 3900 million
metal = 0.35 [Fe/H]
mass = 1
radius = 1.05
gravity = 4.315
luminosity = 0.75
temperature = 5250 Starbox catalog
names = Gl 614, HD 145675, HIP 79248 Starbox reference
Simbad = HD+145675
ARICNS =

14 Herculis is an orange dwarf star approximately 59 light-years away in the constellation Hercules. Because of its apparent magnitude, the star cannot be seen with the naked eye. As of 2006, it is though that 14 Herculis has two extrasolar planets in orbit around the star.

Stellar components

14 Herculis is an orange dwarf star of the spectral type "K0V." It is though that the star has only 79 percent the mass of the Sun, 88 percent of the radius, and 75 percent of the luminosity. The star appears to be 3.2 times as enriched with elements heavier than hydrogen (based on its abundance of iron).

Planetary system

In 1998 an extrasolar planet was discovered to orbit 14 Herculis, which received the designation 14 Herculis b. [cite conference|author=Mayor, M. et al.|title=Searching for giant planets at the Haute-Provence Observatory|conference=IAU Colloqu. 170|booktitle=Precise Stellar Radial Velocities|editor=(ed. Hearnshaw, J. B. and Scarfe, C. D.)|date=1998|publisher=ASP|location=San Francisco] The planet is located in an eccentric, long-period orbit which takes around 4.8 years to complete.cite journal |url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2007ApJ...654..625W&db_key=AST&nosetcookie=1 |author=Wittenmyer, R. A., Endl, M., Cochran, W. D.|title=Long-Period Objects in the Extrasolar Planetary Systems 47 Ursae Majoris and 14 Herculis|journal=The Astrophysical Journal|volume=654|issue=1|pages=625 – 632|year=2007|doi=10.1086/509110] In 2005, a possible second planet was proposed, designated 14 Herculis c. [cite journal |url=http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2006ApJ...645..688G&db_key=AST&nosetcookie=1 |author=Goździewski, K., Konacki, M., Maciejewski, A. J.|title=Orbital Configurations and Dynamical Stability of Multiplanet Systems around Sun-like Stars HD 202206, 14 Herculis, HD 37124, and HD 108874|journal=The Astrophysical Journal|volume=645|issue=1|pages=688 – 703|year=2006|doi=10.1086/504030] The parameters of this planet are uncertain, but a recent analysis suggests it may lie in the 4:1 resonance with the inner planet, with an orbital period of almost 19 years at an orbital distance of 6.9 AU.

PlanetboxOrbit
exoplanet = b
mass = >4.64 ± 0.19
period = 1773.4 ± 2.5
semimajor = 2.77 ± 0.05
eccentricity = 0.369 ± 0.005PlanetboxOrbit
exoplanet = c
mass = >2.1
period = 6906 ± 60
semimajor = 6.9
eccentricity = 0

See also

* 47 Ursae Majoris
* List of stars in Hercules
* List of stars with confirmed extrasolar planets

References

External links

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