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31.9: The Nearest Stars, Brown Dwarfs, and White Dwarfs (Appendix I)

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    19721
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    Table \(\PageIndex{1}\): The Nearest Stars, Brown Dwarfs, and White Dwarfs
    Star System Discovery Name Distance (light-year) Spectral Type Location: RA1 Location: Dec2 Luminosity (Sun = 1)
        Sun G2 V 1
    1 1 Proxima Centauri 4.2 M5.5 V 14 29 −62 40 5 × 10−5
    2 2 Alpha Centauri A 4.4 G2 V 14 39 −60 50 1.5
    3   Alpha Centauri B 4.4 K2 IV 14 39 −60 50 0.5
    4 3 Barnard’s Star 6.0 M4 V 17 57 +04 42 4.4 × 10−4
    5 4 Wolf 359 7.8 M6 V 10 56 +07 00 2 × 10−5
    6 5 Lalande 21 185 8.3 M2 V 11 03 +35 58 5.7 × 10−3
    7 6 Sirius A 8.6 A1 V 06 45 −16 42 23.1
    8   Sirius B 8.6 DA23 06 45 −16 43 2.5 × 10−3
    9 7 Luyten 726-8 A 8.7 M5.5 V 01 39 −17 57 6 × 10−5
    10   Luyten 726-8 B (UV Ceti) 8.7 M6 V 01 39 −17 57 4 × 10−5
    11 8 Ross 154 9.7 M.05 V 18 49 −23 50 5 × 10−4
    12 9 Ross 248 (HH Andromedae) 10.3 M5.5 V 23 41 +44 10 1.0 × 10−4
    13 10 Epsilon Eridani 10.5 K2 V 03 32 −09 27 0.29
    14 11 Lacaille 9352 10.7 M0.5 V 23 05 −35 51 0.011
    15 12 Ross 128 (FI Virginis) 10.9 M4 V 11 47 +00 48 3.4 × 10−4
    16 13 Luyten 789-6 A (EZ Aquarii A) 11.3 M5 V 22 38 −15 17 5 × 10−5
    17   Luyten 789-6 B (EZ Aquarii B) 11.3 M5.5 V 22 38 −15 15 5 × 10−5
    18   Luyten 789-6 C (EZ Aquarii C) 11.3 M6.5 V 22 38 −15 17 2 × 10−5
    19 14 61 Cygni A 11.4 K5 V 21 06 +38 44 0.086
    20   61 Cygni B 11.4 K7 V 21 06 +38 44 0.041
    21 15 Procyon A 11.4 F51V 07 39 +05 13 7.38
    22   Procyon B 11.4 wd4 07 39 +05 13 5.5 × 10−4
    23 16 Sigma 2398 A 11.5 M3 V 18 42 +59 37 0.003
    24   Sigma 2398 B 11.5 M3.5 V 18 42 +59 37 1.4 × 10−3
    25 17 Groombridge 34 A (GX Andromedae) 11.6 M1.5 V 00 18 +44 01 6.4 × 10−3
    26   Groombridge 34 B (GQ Andromedae) 11.6 M3.5 V 00 18 +44 01 4.1 × 10−4
    27 18 Epsilon Indi A 11.8 K5 V 22 03 −56 46 0.150
    28   Epsilon Indi Ba 11.7 T15 22 04 −56 46
    29   Epsilon Indi Bb 11.7 T66 22 04 −56 46
    30 19 G 51-15 (DX Cancri) 11.8 M6.5 V 08 29 +26 46 1 × 10−5
    31 20 Tau Ceti 11.9 G8.5 V 01 44 −15 56 0.458
    32 21 Luyten 372-58 12.0 M5 V 03 35 −44 30 7 × 10−5
    33 22 Luyten 725-32 (YZ Ceti) 12.1 M4.5 V 01 12 −16 59 1.8 × 10−4
    34 23 Luyten’s Star 12.4 M3.5 V 07 27 +05 13 1.4 × 10−3
    35 24 SCR J184-6357 A 12.6 M8.5 V 18 45 −63 57 1 × 10−6
    36   SCR J184-6357 B 12.7 T67 18 45 −63 57
    37 25 Teegarden’s Star 12.5 M6 V 02 53 +16 52 1 × 10−5
    38 26 Kapteyn’s Star 12.8 M1 V 05 11 −45 01 3.8 × 10−3
    39 27 Lacaille 8760 (AX Microscopium) 12.9 K7 V 21 17 −38 52 0.029

    Footnotes

    1Location (right ascension) given for Epoch 2000.0

    2Location (declination) given for Epoch 2000.0

    3White dwarf stellar remnant

    4White dwarf stellar remnant

    5Brown dwarf

    6Brown dwarf

    7Brown dwarf