The Planet Around HD128311 Revised 22 October 2004
Velocity versus Time for HD128311
(Data from Keck Observatory)
Data provided by California & Carnegie Planet Search Team
Butler et al. 2003, ApJ, 582, 455
Orbital Parameters and Planet Mass
Keck Observatory
Planet
Period
(d)T_peri
(JD-2450000)ecc
omega
(deg)Vel Amp, K
(m/s) Msini
(M_jup)a
(AU)
b
420.514
27.24
0.30
223
84.89
2.58
1.02
c
919.000
?
0.29
?
79.80
3.24
1.743
Chi-squared =
7.96
| Spectral Type | Mass (MSun) | Apparent magnitude | Distance (pc) | Prot(d) | [Fe/H] |
|---|---|---|---|---|---|
| K0V | 0.80 | 7.48 | 16.6 | 10.78 | 0.08 |