Table 1: NGC 2903: Some basic parameters.
  NGC 2903 Referencea
Alternate name IRAS 09293+2143  
Type SAB(rs)bc 1
RA (2000) 09$^{\rm h}$32$^{\rm m}$09 $.\!\!^{\rm s}$9 2
Dec (2000) +21$^\circ $30$^\prime$07 $^{\prime\prime}$ 2
Distance/Mpc 8.9 3
Radial velocity/km s-1 556 3
D25 diameter 11 $.\mkern-4mu^\prime$6 1
Axial ratio 0.49 1
Inclination 66$^\circ $ 1
log ($L_{\rm B}$ /$L_\odot$) 10.13 1
log ( $M_{\rm HI}$/$M_\odot$) 9.25 1
log ( $N_{\rm HI}$/cm-2) (Galactic) 20.45 4
log ( $N_{\rm HI}$/cm-2) (intrinsic) 20.92 5
a References:
1) Tully (1988).
2) Falco et al. (1999).
3) Drozdovsky et al. (2000).
4) Dickey & Lockman (1990).
5) Wevers et al. (1986).

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