Planet eps Eridani b

Name eps Eridani b
Discovered in 2000
M × sin i 1.55 (± 0.24) MJ
Semi-major axis 3.39 (± 0.36) AU
Orbital period 2502.0 (± 10.0) day
Eccentricity 0.702 (± 0.039)
ω 47.0 (± 3.0) deg
Tperi 54207.0 (± 7.0) JD
Radius
Inclination 30.1 (± 3.8) deg;
Update Oct. 19, 2010
Detection method detected by radial velocity
Molecules detected
Primary transit
Secondary transit
Anomaly angle
Time Vr=0
Calculated temperature
Measured temperature
Hottest point longitute
Surface gravity log(g/gH)

Remarks

19 Oct 2010: Simpson et al. (2010) infer the orbital inclination 44 deg. from the parent star rotation, deriving a planet mass 1.5+2.5-0.5MJ; but the coplanarity of stellar equator with planet orbits is generally not demonstrated.
20 oct. 2002: The hypothetical planet epsilon Eridani c is suspected from the dust ring morphology (Quillen & Thorndike 2002)
2001: Marcy et al. claim that " The Doppler behavior of magnetically active stars remains poorly explored, because so few stars are as active as Epsilon Eridani. Thus, Campbell's interpretation of a planet remains controversial."

Other web-pages

Star

Name eps Eridani
Distance 3.2 pc
Spectral type K2 V
Apparent magnitude V 3.73
Mass 0.83 (± 0.05) MSun
Age 0.66 Gyr
Effective temperature 5116.0 K
Radius 0.895 (± 0.085) RSun
Metallicity [Fe/H] -0.13 (± 0.04)
RA2000 03:32:55.0
Dec2000 -09:27:29
Planetary system 2 planets

More data


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HST Fine Guidance Sensor Astrometry of the Extrasolar Planet Candidates epsilon Eri and upsilon And - A Progress Report.
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Astron. J., 124, 2224
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epsilon ERIDANI, upsilon ANDROMEDAE, 51 PEGASI, HD 209458, HD 196050.
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Structure in the Epsilon Eridani dusty disk caused by mean motion resonances with a 0.3 eccentricity planet at periastron.
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Photospheric Abundances of Volatile and Refractory Elements in Planet-Harboring Stars.
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paper

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BAAS, 32, 32.01
abstract

Evidence for a Long-period Planet Orbiting Epsilon Eridani.
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paper

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paper

Correlation of the Radial Velocity of Epsilon Eridani with Its Magnetic Cycle
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BAAS, 28, 1111
abstract

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May 12, 2006 WALKER G. A. H., WALKER A. R., IRWIN A. W., LARSON A. M., YANG S. L. S. & RICHARDSON D. C.
Icarus, 116, 359
paper

Epsilon Eridani's Planetary Companion and Circumstellar Dust.
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BAAS, 24, 1228
abstract

The search for companions to epsilon Eridani.
April 19, 2005 LAWTON A. & WRIGHT P.
JBIS, 43, 556

A search for substellar companions to solar-type stars.
April 19, 2005 CAMPBELL B., WALKER G. & YANG S.
ApJ., 331, 902
abstract