| Year | Cycle | BJDD | (O-C)
 |
Ref. |
| (+2400000 d) | (
 d) |
|||
| 1978 | 1076 | 43807.18220(3) | -23 | 1 |
| 1982 | 20824 | 45261.56732(6) | -7 | 2, 3 |
| 1983 | 25976 | 45640.99769(6) | -9 | 2, 3 |
| 1984 | 30766 | 45993.76780(5) | -8 | 2 |
| 1991 | 63228 | 48384.50361(5) | +23 | 4 |
| 1994 | 79770 |
49602.77584(5) | +43 | 5 |
| 1995 | 85616 | 50033.31752(4) | +56 | 6 |
| 1997 | 92628 | 50549.73159(2) | +44 | 6 |
| 2002 | 119542 | 52531.87205(3) | +8 | 7 |
| 2003 | 125130 | 52943.41261(4) | +8 | 7 |
| 2007 | 141152 | 54123.38773(3) | -29 | This work |
|
O-C times with respect to the
linear ephemeris of Table 3.
X-ray mid-eclipse timing.
References: (1) Patterson (1981); (2)
Zhang et al. (1986);
(3) Horne et al. (1991); (4) Wood et al. (1995);
(5) Mukai
et al. (1997); (6) Ioannou et al. (1999); (7)
Feline et al. (2005).
|