Basic data (System:647)
| C1900.0 | : | 10572+6212
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| C2000.0 | : | 110321846+61391536
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| Comp. | :
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| Magn. | : | 7.12
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| Spect. | : | F8
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Identifiers:
| BD +62 1160 | GAIADR2 861857244610039552 | GAIADR3 861857244610039552 | HD 95638
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| TYC 4146-354-1
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Orbit
| Element | | Value | Std. dev.
|
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| Period (d.) | : | 6.03364 | 0.00002
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| Periastron time (xJD-2,400,000.0) | : | 44597.596 | 0.003
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| Reference T0/epoch | : | JD
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| Eccentricity | : | 0 |
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| omega primary (deg.) | : | 0 |
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| K1 (km/s) | : | 31.8 | 0.1
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| K2 (km/s) | : | |
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| V0 (km/s) | : | -9.4 | 0.1
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| sigma residuals primary | : |
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| sigma residuals secondary | : |
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| #RV primary | : | 19
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| #RV secondary | : |
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| Grade | : |
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| Contributor | : | EVG
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| Status | : | PUB
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| Bibcode | : | 1987A&A...171..157M
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| Derived quantities (on the fly, from the above quantities) |
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| a1sini (km) | : | 2.6384e+06 | 8300
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| f(m) (sol.mass) | : | 0.0201801 | 0.00019
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Note
HD 95638 is a member of the quadruple system.
Petrie (1959, Publ. Dom. Astrophys. Obs. 6, 365) got e=0.087+-0.027.
The authors got e=-0.004+-0.011 and adopted a circular orbit.
The old orbit elements were recalculated using Petrie's measurements,
assuming e=0. Then the value for the period P was calculated by
combining derived T0 for the 1959 epoch and the authors' elements.
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) |
|
| 44990.622 | 10.57 | 0.43 | 1 | a | |
|
| 44628.620 | 10.61 | 0.41 | 1 | a | |
|
| 44628.628 | 10.44 | 0.41 | 1 | a | |
|
| 44339.421 | -1.07 | 0.45 | 1 | a | |
|
| 44991.636 | -21.06 | 0.41 | 1 | a | |
|
| 44623.614 | -20.92 | 0.46 | 1 | a | |
|
| 44636.609 | -40.13 | 0.41 | 1 | a | |
|
| 44341.391 | -40.26 | 0.42 | 1 | a | |
|
| 44341.460 | -39.81 | 0.44 | 1 | a | |
|
| 44317.466 | -38.14 | 0.46 | 1 | a | |
|
| 44993.609 | -30.89 | 0.49 | 1 | a | |
|
| 44625.599 | -29.59 | 0.44 | 1 | a | |
|
| 44638.594 | -0.48 | 0.41 | 1 | a | |
|
| 44626.576 | 0.95 | 0.42 | 1 | a | |
|
| 44626.583 | 1.35 | 0.43 | 1 | a | |
|
| 44626.591 | 2.18 | 0.44 | 1 | a | |
|
| 44626.598 | 2.05 | 0.42 | 1 | a | |
|
| 44319.471 | 16.56 | 0.48 | 1 | a | |
|
| 44989.650 | 21.86 | 0.41 | 1 | a | |
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Plot
Encapsulated PostScript file
T. Merle
