Basic data (System:1077)
| C1900.0 | : | 18407+5526
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| C2000.0 | : | 184237953+55322205
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| Comp. | :
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| Magn. | : | 5.05(V)
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| Spect. | : | A0 ; A0
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Identifiers:
| BD +55 2107 | Flamsteed 46 Dra | GAIADR2 2147865732587997056 | HD 173524
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| HIP 91755
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Orbit
| Element | | Value | Std. dev.
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| Period (d.) | : | 9.81073 |
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| Periastron time (xJD-2,400,000.0) | : | 40003.128 | 0.032
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| Reference T0/epoch | : | JD
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| Eccentricity | : | 0.200 | 0.006
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| omega primary (deg.) | : | 172.29 | 1.29
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| K1 (km/s) | : | 26.01 | 0.17
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| K2 (km/s) | : | 29.12 | 0.18
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| V0 (km/s) | : | -27.88 | 0.09
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| sigma residuals primary | : | 0.44
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| sigma residuals secondary | : | 0.53
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| #RV primary | : | 17
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| #RV secondary | : | 17
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| Grade | : |
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| Contributor | : | ARD
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| Status | : | PUB
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| Bibcode | : | 1998MNRAS.297....1A
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| Derived quantities (on the fly, from the above quantities) |
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| a1sini (km) | : | 3.43804e+06 | 0
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| a2sini (km) | : | 3.84913e+06 | 0
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| m1sin**3 i (sol.mass) | : | 0.0849451 | 0.0012
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| m2sin**3 i (sol.mass) | : | 0.075873 | 0.0011
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Note
Observatories: Dominion Astrophysical Observatory Reticon
The star is a double-lined spectrocopic binary.
Radial velocities used in this orbit
| xJD | Rad.Vel. | O-C or error | Weight | Component | Offset | Comment
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| -2,400,000.0 | (km/s) | (km/s) | | | (km/s) |
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| 47703.8629 | -51.5 | 1.0 | DAO | a | 0 |
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| 48759.8549 | -6.8 | 1.0 | DAO | a | 0 |
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| 47701.8150 | -16.3 | 1.0 | DAO | a | 0 |
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| 47700.8296 | -9.2 | 1.0 | DAO | a | 0 |
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| 47704.8886 | -59.1 | 1.0 | DAO | a | 0 |
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| 49139.8264 | -19.4 | 1.0 | DAO | a | 0 |
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| 47750.7494 | -15.2 | 1.0 | DAO | a | 0 |
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| 47748.7164 | -8.2 | 1.0 | DAO | a | 0 |
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| 47337.9049 | -9.4 | 1.0 | DAO | a | 0 |
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| 48380.8496 | -52.0 | 1.0 | DAO | a | 0 |
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| 47835.5820 | -14.6 | 1.0 | DAO | a | 0 |
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| 47831.6453 | -55.1 | 1.0 | DAO | a | 0 |
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| 47832.6459 | -56.9 | 1.0 | DAO | a | 0 |
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| 48093.8268 | -12.7 | 1.0 | DAO | a | 0 |
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| 48223.5605 | -46.3 | 1.0 | DAO | a | 0 |
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| 48480.7694 | -47.6 | 1.0 | DAO | a | 0 |
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| 48762.8446 | -40.4 | 1.0 | DAO | a | 0 |
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| 47703.8629 | -2.7 | 1.0 | DAO | b | 0 |
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| 48759.8549 | -49.9 | 1.0 | DAO | b | 0 |
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| 47701.8150 | -40.1 | 1.0 | DAO | b | 0 |
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| 47700.8296 | -49.4 | 1.0 | DAO | b | 0 |
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| 47704.8886 | +6.3 | 1.0 | DAO | b | 0 |
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| 49139.8264 | -35.7 | 1.0 | DAO | b | 0 |
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| 47750.7494 | -41.9 | 1.0 | DAO | b | 0 |
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| 47748.7164 | -51.5 | 1.0 | DAO | b | 0 |
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| 47337.9049 | -49.5 | 1.0 | DAO | b | 0 |
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| 48380.8496 | -0.4 | 1.0 | DAO | b | 0 |
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| 47835.5820 | -43.4 | 1.0 | DAO | b | 0 |
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| 47831.6453 | +2.3 | 1.0 | DAO | b | 0 |
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| 47832.6459 | +4.5 | 1.0 | DAO | b | 0 |
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| 48093.8268 | -45.1 | 1.0 | DAO | b | 0 |
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| 48223.5605 | -7.2 | 1.0 | DAO | b | 0 |
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| 48480.7694 | -4.4 | 1.0 | DAO | b | 0 |
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| 48762.8446 | -13.4 | 1.0 | DAO | b | 0 |
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Plot
Encapsulated PostScript file
D.Pourbaix
