Table 2: X-ray flux and H $\alpha$ equivalent width measurements of LS 5039. Errors in EW(H $\alpha$ ) are $\protect\la$ 10%.
Mission     Date     F $^a_{\rm X}$    EW(H $\alpha$ )     Date

    X-ray obs.        (Å)     Opt. obs.

RXTE       8/02/1998     40^b       2.2^c     Aug. 1998

ASCA       4/10/1999     10.9^b    2.8^b     26/7/1999

BeppoSAX       8/10/2000       4.9^b    3.1^c     Oct. 2000

CHANDRA     10/09/2002     10.0^d    2.8^b     10/9/2002

^a
$\times 10^{-12}$ erg cm^-2 s^-1 in the energy range 0.3-10 keV.
^b
This work.
^c
McSwain & Gies (2002).
^d
Miller (private communication).

**Table 2:** X-ray flux and H $\alpha$ equivalent width measurements of LS 5039. Errors in EW(H $\alpha$ ) are $\protect\la$ 10%.
Mission	Date	F $^a_{\rm X}$	EW(H $\alpha$ )	Date
	X-ray obs.		(Å)	Opt. obs.
RXTE	8/02/1998	40^b	2.2^c	Aug. 1998
ASCA	4/10/1999	10.9^b	2.8^b	26/7/1999
BeppoSAX	8/10/2000	4.9^b	3.1^c	Oct. 2000
CHANDRA	10/09/2002	10.0^d	2.8^b	10/9/2002

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