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Table 1
Parameters derived from observations.
| Object | V209 | V60 | V228 | V8 |
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| P(days) | 0.834419 | 1.183021 | 1.150686 | 0.314912 |
| a/R⊙ | 3.838(55) | 5.487(47) | 5.529(24) | 1.92 |
| M1/M⊙ | 0.945(43) | 1.259(25) | 1.512(22) | 0.84 |
| M2/M⊙ | 0.144(08) | 0.327(17) | 0.200(07) | 0.12 |
| R1/R⊙ | 0.983(15) | 1.102(21) | 1.357(19) | 0.88 |
| R2/R⊙ | 0.425(08) | 1.480(11) | 1.238(13) | 0.45 |
| T1(K) | 9370(300) | 8160(140) | 8075(130) | 6990 |
| T2(K) | 10 870(320) | 5400(160) | 5810(150) | 7100 |
| α2000 | 201.57200 | 294.99046 | 6.53692 | 287.79417 |
| δ2000 | −47.38800 | −30.96288 | 72.11706 | −59.98151 |
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| Cluster | ω Cen | M 55 | 47 Tuc | NGC 6752 |
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| age (Gyr) | 11.5 ± 0.9 | 12.3 ± 0.5 | 13.1 ± 0.9 | 11.8 ± 0.6 |
| Y | 0.25 ÷ 0.40 | 0.25 | 0.25 ÷ 0.28 | 0.25 |
| Z/ 10-4 | 1a÷ 110 | 1 ÷ 3 | 24 ÷ 52 | 4 ÷ 8 |
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