Basic data (System:718)
| C1900.0 | : | 12148-0007
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| C2000.0 | : | 121954357-00400049
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| Comp. | : | A
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| Magn. | : | 3.88(V)
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| Spect. | : | A2V
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Identifiers:
| Bayer $\eta$ Vir | BD +00 2926 | Flamsteed 15 Vir | GAIADR2 3695061317956684160
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| GAIADR3 3695061317956684160 | HD 107259 | HIP 60129 | HR 4689
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Orbit
| Element | | Value | Std. dev.
|
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| Period (d.) | : | 71.7919 | Fixed
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| Periastron time (xJD-2,400,000.0) | : | 54403.7295 | 0.0938
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| Reference T0/epoch | : | JD
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| Eccentricity | : | 0.2518 | 0.0011
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| omega primary (deg.) | : | 197.96 | 0.48
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| K1 (km/s) | : | 26.532 | 0.054
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| K2 (km/s) | : | 35.128 | 0.081
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| V0 (km/s) | : | 1.055 | 0.009
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| sigma residuals primary | : | 0.129
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| sigma residuals secondary | : | 0.231
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| #RV primary | : | 11
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| #RV secondary | : | 11
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| Grade | : |
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| Contributor | : | PBX
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| Status | : | PUB
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| Bibcode | : | 2011AJ....142....6B
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| Derived quantities (on the fly, from the above quantities) |
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| a1sini (km) | : | 2.53487e+07 | 52000
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| a2sini (km) | : | 3.35613e+07 | 78000
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| m1sin**3 i (sol.mass) | : | 0.903915 | 0.0048
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| m2sin**3 i (sol.mass) | : | 0.682722 | 0.0032
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Note
The period is adopted from Hartkopf et al. (1992)
Radial velocities used in this orbit
| xJD | Rad.Vel. | O-C or error | Weight | Component | Offset | Comment
|
| -2,400,000.0 | (km/s) | (km/s) | | | (km/s) |
|
| 54491.9611 | 11.665 | 0.022 | 1 | a | 0 |
|
| 54491.9611 | -11.833 | 0.067 | 1 | b | 0 |
|
| 54548.8113 | -27.988 | 0.034 | 1 | a | 0 |
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| 54548.8113 | 40.160 | 0.101 | 1 | b | 0 |
|
| 54549.7519 | -26.057 | 0.030 | 1 | a | 0 |
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| 54549.7519 | 37.392 | 0.090 | 1 | b | 0 |
|
| 54576.7011 | 21.091 | 0.035 | 1 | a | 0 |
|
| 54576.7011 | -25.264 | 0.099 | 1 | b | 0 |
|
| 54577.7526 | 21.138 | 0.035 | 1 | a | 0 |
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| 54577.7526 | -25.293 | 0.105 | 1 | b | 0 |
|
| 54579.7025 | 20.923 | 0.039 | 1 | a | 0 |
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| 54579.7025 | -25.080 | 0.119 | 1 | b | 0 |
|
| 54603.7043 | -6.225 | 0.028 | 1 | a | 0 |
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| 54603.7043 | 10.650 | 0.085 | 1 | b | 0 |
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| 54604.6471 | -8.312 | 0.029 | 1 | a | 0 |
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| 54604.6471 | 13.633 | 0.087 | 1 | b | 0 |
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| 54605.6656 | -10.717 | 0.030 | 1 | a | 0 |
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| 54605.6656 | 16.643 | 0.091 | 1 | b | 0 |
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| 54634.6939 | 9.759 | 0.033 | 1 | a | 0 |
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| 54634.6939 | -10.524 | 0.101 | 1 | b | 0 |
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| 54636.6521 | 12.931 | 0.026 | 1 | a | 0 |
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| 54636.6521 | -14.812 | 0.076 | 1 | b | 0 |
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Plot
Encapsulated PostScript file
T. Merle
