Table 2: Parameters of the sample galaxies.
Object Morp. type B_T PA i $V_{\odot}$ D Scale M_{B_T}⁰

[name] [RSA] [RC3] [mag] [ $^\circ$ ] [ $^\circ$ ] [ ${\rm km\;s}^{-1}$ ] [Mpc] [pc/''] [mag]

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

NGC 0949 Sc(s)III Sb(rs):? 12.40 145 58 608 $\pm$ 10 11.2 54.5 -18.47

NGC 2460 Sab(s) Sa(s) 12.72 40 42 1452 $\pm$ 10 21.3 103.0 -19.35

NGC 2541 Sc(s)III Scd(s) 12.26 165 60 540 $\pm$ 10 8.3 40.5 -18.03

NGC 6810 Sb Sab(s):sp 12.37 176 78 1961 $\pm$ 5 24.3 117.8 -20.44

NOTES - Column (2): morphological classification from RSA. Column (3): morphological classification from RC3. Column (4): apparent total blue magnitude from RC3. Column (5): major-axis position angle from RC3. Column (6): inclination derived as $\cos^{2}{i}~=~(q^2-q_0^2)/(1-q_0^2)$ . The observed axial ratio q is taken from RC3 and the intrinsic flattening has been assumed following Guthrie (1992) with RC3 morphological classification. Column (7): heliocentric velocity of the galaxy derived as center of symmetry of the rotation curve of the gas with eliocentric correction. Column (8): distance obtained as V₀/H₀ with H₀=75 $\rm km\;s^{-1}\;Mpc^{-1}$ and V₀ the systemic velocity derived from $V_{\odot}$ corrected for the motion of the Sun with respect of the Local Group as done in the RSA. Column (10): absolute total blue magnitude corrected for inclination and extinction from RC3.

**Table 2:** Parameters of the sample galaxies.
Object	Morp. type	B_T	PA	i	$V_{\odot}$	D	Scale	M_{B_T}⁰
[name]	[RSA]	[RC3]	[mag]	[ $^\circ$ ]	[ $^\circ$ ]	[ ${\rm km\;s}^{-1}$ ]	[Mpc]	[pc/'']	[mag]
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
NGC 0949	Sc(s)III	Sb(rs):?	12.40	145	58	608 $\pm$ 10	11.2	54.5	-18.47
NGC 2460	Sab(s)	Sa(s)	12.72	40	42	1452 $\pm$ 10	21.3	103.0	-19.35
NGC 2541	Sc(s)III	Scd(s)	12.26	165	60	540 $\pm$ 10	8.3	40.5	-18.03
NGC 6810	Sb	Sab(s):sp	12.37	176	78	1961 $\pm$ 5	24.3	117.8	-20.44

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