Mass: 1.35 Msun
Spectral type: F6IV
B, V magnitude: 4.98, 4.50,
Radial velocity (m/s): -15.6
Coordinates: 13 47 15.7429 +17 27 24.862
RV Dataset: Tau Boo 2004, by Tom Kaye, SpectraShift (sigma=200 m/s), see alternative detrended set of Tau Boo here.
Analysis: ASE running Matlab 7, Athlon 1.4 GHz CPU, 3rd of November, 2006
Companion 1 Search parameters: period: 1-10 days (derived as per periodogram above), max eccentricity: 0.8, max K: 1500 m/s, Stellar Offset: -1500 to 1500 m/s.
| ChiSq/L | Stellar Offset, m/s | Period, days | Tperi, day (JD) | Eccentricity | Semiamplitude, m/s | Longitude of Periastron, degrees | Mean Anomaly at t0, degrees | Mass m sin i, Mjup |
| 0.72776 | -702.444 | 3.2181 | 2453109.5551 | 0.061294 | 470.694 | 242.1706 | 322.6475 | 4.1708 |
| 0.72615 | -698.459 | 3.2109 | 2453103.4770 | 0.066148 | 477.3571 | 280.5415 | 282.4143 | 4.2253 |
| 0.71823 | -688.83 | 3.2059 | 2453106.6110 | 0.098075 | 488.808 | 270.5935 | 290.3671 | 4.3131 |
| 0.69616 | -658.756 | 3.21 | 2453102.9920 | 0.10985 | 471.1511 | 224.691 | 336.785 | 4.1539 |
| 0.68087 | -633.001 | 3.2086 | 2453109.3810 | 0.14275 | 500.9043 | 220.5425 | 339.9389 | 4.397 |
| 0.71522 | -684.797 | 3.2128 | 2453103.2630 | 0.094613 | 480.0771 | 258.2591 | 306.4392 | 4.2405 |
| 0.74602 | -694.475 | 3.2265 | 2453107.4606 | 0.000569 | 452.6803 | 8.4116 | 198.3152 | 4.0222 |
| 0.69059 | -641.261 | 3.2123 | 2453109.2435 | 0.11708 | 482.3313 | 204.9448 | 356.2009 | 4.2499 |
| 0.72444 | -699.446 | 3.2136 | 2453109.6677 | 0.08157 | 473.6949 | 256.6246 | 308.9731 | 4.1893 |
| 0.67614 | -612.703 | 3.2074 | 2453109.3186 | 0.17592 | 507.5558 | 212.7461 | 346.6658 | 4.4307 |
| 0.76683 | -669.072 | 3.366 | 2453106.4738 | 0.22001 | 518.4646 | 270.7535 | 325.4759 | 4.5577 |
| 0.74238 | -703.681 | 3.2176 | 2453110.1863 | 0.038688 | 466.3802 | 312.6579 | 251.9083 | 4.137 |
| 0.75652 | -645.113 | 3.3712 | 2453106.3902 | 0.26478 | 541.6027 | 262.6641 | 335.0119 | 4.7089 |
| 0.72944 | -688.151 | 3.2164 | 2453105.9542 | 0.054897 | 463.6283 | 199.6426 | 5.2829 | 4.109 |
| 0.78826 | -682.673 | 3.3564 | 2453109.8403 | 0.13606 | 493.7327 | 271.0316 | 323.2642 | 4.4037 |
| 0.67305 | -601.572 | 3.2026 | 2453109.3334 | 0.17205 | 512.6334 | 213.5579 | 343.9031 | 4.4759 |
| 0.73372 | -706.243 | 3.2184 | 2453103.3164 | 0.077534 | 454.3985 | 264.6249 | 300.5593 | 4.0219 |
| 0.71145 | -682.064 | 3.2078 | 2453109.7200 | 0.087617 | 487.1925 | 260.3734 | 301.7096 | 4.3039 |
| 0.67264 | -597.953 | 3.2043 | 2453109.2963 | 0.18436 | 514.7567 | 209.3255 | 348.4618 | 4.485 |
| 0.67482 | -614.003 | 3.2028 | 2453106.1885 | 0.17385 | 512.6644 | 220.4887 | 337.441 | 4.4748 |
| 0.72258 | -679.861 | 3.2133 | 2453103.1448 | 0.094302 | 511.3962 | 246.1471 | 319.69 | 4.5175 |
Companion 1 Search parameters: period: 1-10 days (derived as per periodogram above), max eccentricity: 0.8, max K: 1000 m/s, Stellar Offset: -1000 to 1000 m/s.
| ChiSq/L | Stellar Offset, m/s | Period, days | Tperi, day (JD) | Eccentricity | Semiamplitude, m/s | Longitude of Periastron, degrees | Mean Anomaly at t0, degrees | Mass m sin i, Mjup |
0.77144 |
103.1546 |
3.2098 |
2453112.3906 |
0.17369 |
452.8479 |
197.9042 |
2.6693 |
3.9557 |
| 0.79501 | 18.4141 | 3.2021 | 2453106.6170 | 0.090954 | 479.8004 | 270.6212 | 289.1827 | 4.2348 |
| 0.7653 | 56.7624 | 3.2044 | 2453112.5957 | 0.12885 | 476.6425 | 222.9525 | 337.8118 | 4.1902 |
| 0.78867 | 30.6833 | 3.2023 | 2453103.3452 | 0.099782 | 481.8299 | 263.337 | 297.0228 | 4.2492 |
| 0.75125 | 108.5974 | 3.2043 | 2453109.3306 | 0.1617 | 484.4428 | 214.3472 | 344.6082 | 4.238 |
| 0.77503 | 40.9492 | 3.2053 | 2453103.1781 | 0.11721 | 486.4479 | 245.5261 | 315.8494 | 4.283 |
| 0.79405 | 19.3006 | 3.2093 | 2453109.4953 | 0.060066 | 468.598 | 234.2775 | 327.2788 | 4.1487 |
| 0.82121 | 16.742 | 3.2163 | 2453104.1766 | 0.000648 | 453.5149 | 358.9185 | 204.2384 | 4.0254 |
| 0.84471 | 14.6348 | 3.2195 | 2453103.4975 | 0.026365 | 410.3981 | 284.1796 | 280.3292 | 3.6426 |
| 0.79255 | 116.5419 | 3.3735 | 2453102.9441 | 0.28049 | 572.7958 | 252.034 | 343.0218 | 4.9583 |
| 0.80852 | 16.4852 | 3.2004 | 2453106.7459 | 0.091169 | 486.3821 | 285.0378 | 274.4544 | 4.292 |
| 0.81335 | 10.7329 | 3.217 | 2453103.4959 | 0.038479 | 459.3839 | 284.7504 | 280.4464 | 4.0747 |
| 0.81213 | 8.6561 | 3.2131 | 2453103.3593 | 0.075193 | 443.9757 | 268.4933 | 295.6547 | 3.9282 |
| 0.7404 | 113.6742 | 3.201 | 2453109.2890 | 0.19578 | 496.3033 | 208.9872 | 348.5286 | 4.313 |
E-mail: maxim.usatov@bcsatellite.net, polina.usatova@bcsatellite.net