discov_num |
notes |
refcode |
JSP 935 |
Primary is V907 Sco, Algol-type eclipsing binary, period 3.776277d. |
Zas2013 |
|
Triple star. The orbital planes of the B9.5V eclipsing binary and the |
|
|
more distant companion (per= 99.3 d.) are not coplanar so the orbital |
|
|
plane of the eclipsing binary shows nodal regression with a period of |
|
|
68 years. For about one-third of this time, the close binary is |
|
|
eclipsing, the rest of the time the inclination is too small for |
|
|
eclipses to occur. The earliest observations of the system in the year |
|
|
1899 show eclipses; the eclipses stopped about 1918, started again |
|
|
about 1963, and stopped again in about 1986. Eclipses should start |
|
|
occurring once again in the year 2030+/-5. (Otero, 1999 AJ 117, 541L). |
|