# Nearest Stars & Planets

Here’s a table of all known star systems within 15 light years (ly) of our Solar System. I will endeavor to keep this list up to date, so please post a comment here if anything needs to be corrected or added.

There are 41 star systems1 within a volume of

$V = \frac{4}{3}\pi r^{3} = \frac{4}{3}\pi (15\;ly)^{3} = 14,137\;ly^{3}$

Assuming that these 41 star systems are uniformly distributed within a sphere of radius 15 ly, the average distance from any star to its nearest neighbor is given by

$\bar{d} = r\left [ \frac{\pi }{3n\;\sqrt[]{2}} \right ]^{\frac{1}{3}} = (15\; ly)\left [ \frac{\pi }{3(41)\;\sqrt[]{2}} \right ]^{\frac{1}{3}} = 3.94\;ly$

So, even though it seems that 41 star systems within a distance of 15 ly from our Solar System is a lot, the volume of 14,137 cubic light years is not that small, and the average distance between any star and its nearest neighbor is about 3.94 ly. Our nearest neighbor is Proxima Centauri, which at a distance of 4.24 ly is quite close to the 3.94 ly average distance derived above.

### Nearest Stars (within 15 light years)

 Star Distance (ly) Spectral Type Constellation Planets? Sun 0.00 G2V zodiacal Yes Proxima Centauri 4.24 M5.0V Centaurus Yes Alpha Centauri A & B 4.36 G2V & K0.0V Centaurus Unknown Barnard's Star 5.97 M3.5V Ophiuchus Unknown Luhman 16 A & B 6.59 L8 & T1 Vela Unknown WISE 0855-0714 7.26 Y2 Hydra Unknown Wolf 359 7.87 M5.5V Leo Yes Lalande 21185 8.29 M2.0V Ursa Major Yes Sirius A & B 8.65 A1V & DA2 Canis Major Unknown Luyten 726-8 A & B 8.79 M5.5V & M6.0V Cetus Unknown Ross 154 9.70 M3.5V Sagittarius Unknown Ross 248 10.29 M5.5V Andromeda Unknown Epsilon Eridani 10.48 K2.0V Eridanus Yes Lacaille 9352 10.72 M1.0V Piscis Austrinus Yes Ross 128 11.01 M4.0V Virgo Yes EZ Aquarii A, B, & C 11.27 M5.0VJ Aquarius Unknown 61 Cygni A & B 11.40 K5.0V & K7.0V Cygnus Unknown Procyon A & B 11.44 F5IV-V & DQZ Canis Minor Unknown Struve 2398 A & B 11.49 M3.0V & M3.5V Draco Yes Groombridge 34 A & B 11.62 M1.5V & M3.5V Andromeda Yes DX Cancri 11.68 M6.0V Cancer Unknown Epsilon Indi A, B, & C 11.81 K4.0V, T1, & T6 Indus Yes Tau Ceti 11.89 G8.5V Cetus Yes Gliese 1061 11.98 M5.0V Horologium Yes YZ Ceti 12.11 M4.0V Cetus Yes Luyten's Star 12.25 M3.5V Canis Minor Yes Teegarden's Star 12.50 M6.5V Aries Yes Kapteyn's Star 12.83 M2.0VI Pictor Unknown Lacaille 8760 12.95 K9.0V Microscopium Unknown SCR 1845-6357 A & B 13.05 M8.5 & T6 Pavo Unknown Kruger 60 A & B 13.08 M3.0V & M4.0V Cepheus Unknown DENIS J1048-3956 13.19 M8.5V Antlia Unknown UGPS 0722-05 13.43 T9 Monoceros Unknown Ross 614 A & B 13.49 M4.0V & M5.5V Monoceros Unknown Wolf 424 A & B 13.98 M5.0VJ Virgo Unknown Wolf 1061 14.05 M3.5V Ophiuchus Yes van Maanen 2 14.07 DZ7 Pisces Unknown Gliese 1 14.17 M1.5V Sculptor Unknown TZ Arietis 14.59 M4.0V Aries Yes Gliese 674 14.84 M2.5V Ara Yes Gliese 687 14.84 M3.0V Draco Yes LHS 292 14.90 M6.5V Sextans Unknown

1 Here we are considering Proxima Centauri and Alpha Centauri A & B to be one star system.

References
Henry, T.J. 2020, The Nearest Stars in The Observer’s Handbook 2023, ed. J. Edgar, The Royal Astronomical Society of Canada, p. 284-288.