The Twenty Nearest Stars

 
 
name                      visual apparent magnitude       distance       visual luminosity 
                                 and spectrum             in light- 
                                                            years      A*              B* 
                         A*                 B* 
 
 
Alpha Centauri**          0.1 G2 V           1.5 K5 V        4.3        1.30           0.36000 
Barnard's star***         9.5 M5 V                           5.9        0.00044 
Wolf 359                 13.5 M6e                            7.6        0.00002 
Lalande 21185***          7.5 M2 V                           8.1        0.0052 
Sirius****               -1.5 A1 V           7.2 dA5         8.6       23              0.00800 
Luyten 726-8             12.5 M6e V         13.0 M6e         8.9        0.00006        0.00004 
Ross 154                 10.6 M5e V                          9.4        0.0004 
Ross 248                 12.2 M6e V                         10.3        0.00011 
Epsilon Eridani           3.7 K2 V                          10.7        0.30 
Luyten 789-6             12.2 M6 V                          10.8        0.00012 
Ross 128                 11.1 M5 V                          10.8        0.00033 
61 Cygni                  5.2 K5 V           6.0 K7 V       11.2        0.083          0.04000 
Epsilon Indi              4.7 K5 V                          11.2       1-87 = 0.13 
Procyon                   0.3 F5I V         10.8 d          11.4        7.6            0.00050 
Sigma 2398                8.9 M3.5 V         9.7 M4 V       11.5        0.0028         0.00130 
Groombridge 34            8.1 M1 V          11.0 M6 V       11.6        0.0058         0.00040 
Lacaille 9352             7.4 M2 V                          11.7        0.012 
Tau Ceti                  3.5 G8 V                          11.9        0.44 
Lacaille 8760             6.7 M1 V                          12.5        0.025 
 
*A and B are brighter and fainter components, respectively, of star. **The two 
components of Alpha Centauri have masses of 1.0 and 0.9 solar mass, respectively. 
They are separated by 23.1 astronomical units and revolve  around one another 
with a period 79.9 years. A third component of the system is an 11th magnitude M5 
dwarf. ***These stars have unseen, planetlike companions whose presence is 
revealed by gravitational attraction on the visible star. ****The two components of 
Sirius are separated by 19.9 astronomical units, 50.1 years. The bright component 
has 2.2 solar masses; the faint component is a white dwarf of 0.9 solar mass.