Table 2: Log of spectroscopic observations of the three components of BD +622296. The brighter component A is a B2.5Ia supergiant; component C is B0III, while component B is WN4. Observations marked A+B were performed under seeing conditions not allowing the separation of the two components. All dates refer to 2002.

Component	Telescope	Date	Wavelength range
A + B	OHP 1.52-m	Jan. 18	3960-4410 Å
A + B	OHP 1.52-m	Jan. 19	4460-4910 Å
A + B	OHP 1.52-m	Jan. 20	5630-6080 Å
A + B	OHP 1.52-m	Jan. 20	6890-6940 Å
A + B	OHP 1.93-m	Jul. 6	3960-4980 Å
C	OHP 1.93-m	Jul. 6	3960-4980 Å
A + B	OHP 1.93-m	Jul. 7	3960-5900 Å
A	INT 2.5-m	Jul. 22	3750-8000 Å
C	INT 2.5-m	Jul. 22	3750-5100 Å
B	INT 2.5-m	Jul. 23	4050-4910 Å
C	INT 2.5-m	Jul. 24	6300-7100 Å
B	INT 2.5-m	Jul. 25	6300-7100 Å