HD 11506

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**HD 11506**
Observation data Epoch J2000.0
Constellation (pronunciation)	Cetus
Right ascension	01^h 52^m 50.534^s
Declination	-19° 30′ 25.107″
Apparent magnitude (V)	7.537
Distance	175.54 ly (53.82 pc)
Spectral type	G0V
Other designations
BD-20°358, HIP 8770, SAO 148079

HD 11506 is a yellow dwarf star in the constellation Cetus. It is an 8^th magnitude about 175.5 ly away.

In 2007, the planet was announced orbiting the star by using radial velocity in N2K Consortium.

1 HD 11506 b
2 References
3 See also
4 External links

[edit] HD 11506 b

**HD 11506 b**
Orbital elements

Semi-major axis a:	2.50 AU
Eccentricity e:	0.22 ± 0.06
Orbital period P:	1406 ± 53 d
Inclination i:	?°
Angular distance θ:	43.664 mas
Longitude of periastron ω:	282 ± 19°
Time of periastron τ:	2453666.3 ± 102 JD
Semi-amplitude K:	84.2 ± 3 m/s
Physical characteristics
Mass:	>4.74 M_J
Radius:	? R_J
Density:	? kg/m³
Gravity:	? g
Temperature:	? K
Discovery
Discovery date:	April 10, 2007
Discovery site:	California, USA
Detection method(s):	Radial velocity
Discoverer(s):	Fischer et al.
Other catalogue

HD 11506 b is a planet that orbits the star HD 11506. This planet is a lower-superjovian that orbits 250% the Earth’s distance from the Sun. The orbital period is 3.85 years. The distance ranges from 1.95 AU to 3.05 AU with variability of 1.1 AU. Dividing the average distance by varying distance, reciprocal and divided by two, we get the eccentricity value of 0.22.

[edit] References

Debra A. Fischer, Geoffrey W. Marcy, R. Paul Butler, Bun'ei Sato, Steven S. Vogt, Sarah Robinson, Gregory Laughlin, Gregory W. Henry, Shigeru Ida, Eri Toyota, Masashi Omiya, Peter Driscoll, Genya Takeda, Jason T. Wright, John A. Johnson (2007). "Five Intermediate-Period Planets from the N2K Sample".