Basic data (System:1795)
| C1900.0 | : |
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| C2000.0 | : | 18122216-1140071
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| Comp. | : | A
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| Magn. | : | 5.10(K)
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| Spect. | : | M3.5III
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Identifiers:
| GAIADR2 4156835340974302464 | GAIADR3 4156835340974302464 | GCVS V343 Ser | Misc AS 289
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| Misc Hen 3-1627 | Misc SS73 143
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Orbit
| Element | | Value | Std. dev.
|
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| Period (d.) | : | 450.5 | 2.2
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| Periastron time (xJD-2,400,000.0) | : | 50674.7 | 19.6
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| Reference T0/epoch | : | JD
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| Eccentricity | : | 0.135 | 0.046
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| omega primary (deg.) | : | 218.6 | 16.2
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| K1 (km/s) | : | 2.66 | 0.12
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| K2 (km/s) | : | |
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| V0 (km/s) | : | -5.652 | 0.083
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| sigma residuals primary | : |
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| sigma residuals secondary | : |
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| #RV primary | : | 21
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| #RV secondary | : |
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| Grade | : | 5
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| Contributor | : | FKL
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| Status | : | PUB
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| Bibcode | : | 2001AJ....121.2219F
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| Derived quantities (on the fly, from the above quantities) |
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| a1sini (km) | : | 1.63274e+07 | 750000
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| f(m) (sol.mass) | : | 0.000857866 | 0.00012
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Note
The system is a symbiotic binary consisting of an M giant and a probable hot
compact companion. Radial velocities were measured from absorption lines in
the infrared.
The criteria of Lucy and Sweeney (1971, AJ, 76, 644) indicate that the
eccentric-orbit solution is to be preferred, but the results are relatively
close to the dividing lines of both tests.
asini = 16330000 +/- 740000 km
f(m) = 0.00086 +/- 0.00012 solar masses
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) |
|
| 49802.984 | -6.6 | 0.3 | 1.0 | a | |
|
| 49874.917 | -4.5 | -0.5 | 1.0 | a | |
|
| 49923.736 | -3.3 | 0.0 | 1.0 | a | |
|
| 49998.588 | -4.1 | -0.3 | 1.0 | a | |
|
| 50161.950 | -8.2 | 0.2 | 1.0 | a | |
|
| 50253.711 | -6.7 | 0.2 | 1.0 | a | |
|
| 50254.793 | -7.0 | -0.2 | 1.0 | a | |
|
| 50319.755 | -3.9 | 0.3 | 1.0 | a | |
|
| 50386.578 | -3.0 | 0.3 | 1.0 | a | |
|
| 50567.876 | -7.0 | 0.2 | 1.0 | a | |
|
| 50628.809 | -8.8 | -0.2 | 1.0 | a | |
|
| 50752.587 | -5.1 | -0.3 | 1.0 | a | |
|
| 50934.820 | -4.3 | 0.3 | 1.0 | a | |
|
| 50983.798 | -6.1 | -0.1 | 1.0 | a | |
|
| 51052.645 | -8.6 | -0.5 | 1.0 | a | |
|
| 51294.962 | -3.1 | 0.2 | 1.0 | a | |
|
| 51363.703 | -4.1 | 0.0 | 1.0 | a | |
|
| 51415.704 | -5.8 | -0.3 | 1.0 | a | |
|
| 51480.590 | -7.0 | 0.5 | 1.0 | a | |
|
| 51647.910 | -4.9 | 0.1 | 1.0 | a | |
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| 51831.609 | -4.7 | -0.2 | 1.0 | a | |
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Plot
Encapsulated PostScript file
T. Merle
