14 Herculis
 |
14 Herculis
Image: Digitized Sky Survey |
An orange-yellow K-star around which an extrasolar
planet has been found. The heavy element
abundance of 14 Herculis is greater than that of the Sun and the discovery
that it has a massive planet lends support to the idea that such large worlds
tend to form in heavy element enriched environments. The planetary companion
of 14 Herculis has a mass almost five times that of Jupiter
and moves in an eccentric orbit about its host star with a period of 4.9
years. This puts it in the category of classical
jovians along with the companion of 47
Ursae Majoris, which it most closely resembles. The discovery of second
possible planet around 14 Herculis was announced in 2005.
| Host star |
| distance |
59 light-years (18.1 pc) |
| spectral type |
K0V |
| apparent magnitude |
6.67 |
| temperature |
4,980 °C (5,250 K) |
| luminosity (Sun=1) |
0.75 |
| mass (Sun=1) |
0.79 |
| metallicity ([Fe]/[H]) |
0.35 |
| position |
R.A. 16h 10m 24.3s, Dec. +43° 49' 03.5" |
| other designations |
HD 145675, HIP 79248, Gl 614, BD+44 2549 |
| Planet |
| mass (Jupiter=1) |
4.74 ± 0.06 |
| semimajor axis |
2.8 AU (420 million km, 260 million miles) |
| orbital period |
1796.4 ± 8.3 days |
| eccentricity |
0.338 ± 0.011 |
| discovery |
1998, Mayor et al (Geneva), Haute-Provence Observatory |
| method of discovery |
radial velocity |
Related categories
NOTABLE
STARS EXTRASOLAR
PLANETS AND SUBSTELLAR OBJECTS
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