Table 4: Apsidal motion parameters for SW CMa derived from the photoelectric times of minima.
Parameter Value and rms error

i ( $^\circ$ ) 88.6 (assumed)

e 0.316 (assumed)

T₀ $2~446~828.7512 \pm 0.0006$

$P_{\rm anomalistic}$ (d) $10.091997 \pm 0.000005$

$P_{\rm sidereal}$ (d) 10.091978

$\omega_0$ ( $^\circ$ ) $163.52 \pm 0.10$

$\omega_1$ ( $^\circ$ /cycle) $0.00067 \pm 0.00021$

U (yr) $14~900 \pm 3600$

**Table 4:** Apsidal motion parameters for SW CMa derived from the photoelectric times of minima.
Parameter	Value and rms error
i ( $^\circ$ )	88.6 (assumed)
e	0.316 (assumed)
T₀	$2~446~828.7512 \pm 0.0006$
$P_{\rm anomalistic}$ (d)	$10.091997 \pm 0.000005$
$P_{\rm sidereal}$ (d)	10.091978
$\omega_0$ ( $^\circ$ )	$163.52 \pm 0.10$
$\omega_1$ ( $^\circ$ /cycle)	$0.00067 \pm 0.00021$
U (yr)	$14~900 \pm 3600$

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