Basic data (System:2601)
| C1900.0 | : |
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| C2000.0 | : | 042834496+15574385
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| Comp. | : | B
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| Magn. | : | 3.847(V)
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| Spect. | : | K0IIIb
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Identifiers:
| Bayer $\theta^1$ Tau | Cl* Melotte 25 MMU 71 | GAIADR2 3312748824191278208 | GAIADR3 3312748824191278208
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| HD 28307 | HIP 20885 | HR 1411
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Orbit
| Element | | Value | Std. dev.
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| Period (d.) | : | 6091. | 156.
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| Periastron time (xJD-2,400,000.0) | : | 50999. | 18.
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| Reference T0/epoch | : | JD
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| Eccentricity | : | 0.597 | 0.013
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| omega primary (deg.) | : | 65.1 | 2.2
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| K1 (km/s) | : | 7.44 | 0.14
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| K2 (km/s) | : | |
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| V0 (km/s) | : | +39.293 | 0.082
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| sigma residuals primary | : | 0.43
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| sigma residuals secondary | : |
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| #RV primary | : | 42
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| #RV secondary | : | 0
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| Grade | : |
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| Contributor | : | TORRES
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| Status | : | PUB
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| Bibcode | : | 2008AJ....135..209M
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| Derived quantities (on the fly, from the above quantities) |
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| a1sini (km) | : | 4.9992e+08 | 1.7e+07
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| f(m) (sol.mass) | : | 0.134705 | 0.015
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Note
Telescope flags (tel): W = Wyeth reflector, T = Tillinghast reflector, M = MMT
Radial velocities are on the native CfA system (+0.139 km/s
should be added to these velocities to put them on the absolute
velocity system defined by CfA observations of minor planets).
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) |
|
| 47873.54241 | 37.58 | 0.23 | 1 | a | 0 | W
|
| 47942.60657 | 37.58 | 0.16 | 1 | a | 0 | W
|
| 47957.58313 | 37.98 | 0.16 | 1 | a | 0 | W
|
| 48142.89303 | 38.39 | 0.16 | 1 | a | 0 | W
|
| 48162.77995 | 39.13 | 0.15 | 1 | a | 0 | W
|
| 48199.73660 | 38.74 | 0.18 | 1 | a | 0 | W
|
| 48886.89118 | 40.20 | 0.16 | 1 | a | 0 | W
|
| 49027.61798 | 40.55 | 0.16 | 1 | a | 0 | W
|
| 49267.90150 | 41.14 | 0.16 | 1 | a | 0 | W
|
| 49286.82459 | 41.39 | 0.14 | 1 | a | 0 | W
|
| 49316.81138 | 41.77 | 0.15 | 1 | a | 0 | W
|
| 49352.72037 | 41.52 | 0.13 | 1 | a | 0 | W
|
| 49444.54549 | 42.38 | 0.28 | 1 | a | 0 | W
|
| 49639.82007 | 43.21 | 0.20 | 1 | a | 0 | W
|
| 49790.57421 | 43.62 | 0.19 | 1 | a | 0 | W
|
| 49979.80469 | 44.40 | 0.16 | 1 | a | 0 | W
|
| 49999.88765 | 44.03 | 0.20 | 1 | a | 0 | W
|
| 50115.51713 | 45.24 | 0.17 | 1 | a | 0 | W
|
| 50146.53625 | 45.03 | 0.23 | 1 | a | 0 | W
|
| 50356.92470 | 46.51 | 0.20 | 1 | a | 0 | W
|
| 50393.83935 | 47.07 | 0.16 | 1 | a | 0 | W
|
| 50792.59634 | 47.71 | 0.22 | 1 | a | 0 | W
|
| 50903.56146 | 47.69 | 0.17 | 1 | a | 0 | W
|
| 51148.84596 | 38.99 | 0.13 | 1 | a | 0 | W
|
| 51166.70129 | 38.19 | 0.17 | 1 | a | 0 | W
|
| 51204.66729 | 37.71 | 0.15 | 1 | a | 0 | W
|
| 51261.49300 | 36.68 | 0.15 | 1 | a | 0 | W
|
| 51414.87714 | 33.43 | 0.18 | 1 | a | 0 | W
|
| 51461.79264 | 34.91 | 0.15 | 1 | a | 0 | W
|
| 51497.75144 | 34.63 | 0.37 | 1 | a | 0 | W
|
| 51956.47688 | 34.34 | 0.14 | 1 | a | 0 | W
|
| 51979.49590 | 33.97 | 0.20 | 1 | a | 0 | W
|
| 52209.88933 | 33.96 | 0.15 | 1 | a | 0 | W
|
| 52247.74552 | 34.42 | 0.14 | 1 | a | 0 | W
|
| 52650.71691 | 35.20 | 0.14 | 1 | a | 0 | W
|
| 52978.81460 | 34.75 | 0.16 | 1 | a | 0 | W
|
| 53003.74749 | 35.84 | 0.15 | 1 | a | 0 | W
|
| 53012.60492 | 35.80 | 0.15 | 1 | a | 0 | W
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| 53065.56718 | 36.38 | 0.29 | 1 | a | 0 | W
|
| 53084.48826 | 36.39 | 0.13 | 1 | a | 0 | W
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| 53260.90402 | 36.47 | 0.16 | 1 | a | 0 | W
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| 53456.56242 | 36.78 | 0.18 | 1 | a | 0 | W
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Plot
Encapsulated PostScript file
T. Merle
