Open Access
Table 2.
Optical timing results for α CrB.
| Type | Date of | JDTmid, ecl | Error | Norb | Source | O-C |
|---|---|---|---|---|---|---|
| observations | – 2400000. | (days) | (s) | |||
| P | 1917–1923 | 23163.781 | 0.005 | −2063 | Stebbins (1928) | −0.1 |
| P | 1946–1948 | 32329.808 | 0.002 | −1535 | Kron & Gordon (1953) | 33.1 |
| P | 1986–1992 | 47346.1168 | 0.0006 | −670 | Volkov (2005) | −7.2 |
| P | April 20 2020 | 58959.88676 | 0.00029 | −1 | This paper | 4.3 |
| P | May 7 2020 | 58977.24622 | 0.00029 | 0 | This paper | 6.1 |
| S | May 1 2020 | 58971.40073 | 0.00069 | n.a. | This paper | n.a. |
Notes. The first two entries are taken from Tomkin & Popper (1986).
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