List of nearest stars explained
This list covers all known stars, white dwarfs, brown dwarfs, and sub-brown dwarfs within 20ly of the Sun. So far, 131 such objects have been found. Only 22 are bright enough to be visible without a telescope, for which the star's visible light needs to reach or exceed the dimmest brightness visible to the naked eye from Earth, 6.5 apparent magnitude.[1]
The known 131 objects are bound in 94 stellar systems. Of those, 103 are main sequence stars: 80 red dwarfs and 23 "typical" stars having greater mass. Additionally, astronomers have found 6 white dwarfs (stars that have exhausted all fusible hydrogen), 21 brown dwarfs, as well as 1 sub-brown dwarf, WISE 0855−0714 (possibly a rogue planet). The closest system is Alpha Centauri, with Proxima Centauri as the closest star in that system, at 4.2465 light-years from Earth. The brightest, most massive and most luminous object among those 131 is Sirius A, which is also the brightest star in Earth's night sky; its white dwarf companion Sirius B is the hottest object among them. The largest object within the 20 light-years is Procyon.
The Solar System, and the other stars/dwarfs listed here, are currently moving within (or near) the Local Interstellar Cloud, roughly 301NaN1 across. The Local Interstellar Cloud is, in turn, contained inside the Local Bubble, a cavity in the interstellar medium about 3001NaN1 across. It contains Ursa Major and the Hyades star cluster, among others. The Local Bubble also contains the neighboring G-Cloud, which contains the stars Alpha Centauri and Altair. In the galactic context, the Local Bubble is a small part of the Orion Arm, which contains most stars that we can see without a telescope. The Orion Arm is one of the spiral arms of our Milky Way galaxy.
Astrometrics
The easiest way to determine stellar distance to the Sun for objects at these distances is parallax, which measures how much stars appear to move against background objects over the course of Earth's orbit around the Sun. As a parsec (parallax-second) is defined by the distance of an object that would appear to move exactly one second of arc against background objects, stars less than 5 parsecs away will have measured parallaxes of over 0.2 arcseconds, or 200 milliarcseconds. Determining past and future positions relies on accurate astrometric measurements of their parallax and total proper motions (how far they move across the sky due to their actual velocity relative to the Sun), along with spectroscopically determined radial velocities (their speed directly towards or away from us, which combined with proper motion defines their true movement through the sky relative to the Sun). Both of these measurements are subject to increasing and significant errors over very long time spans, especially over the several thousand-year time spans it takes for stars to noticeably move relative to each other.[2]
Based on results from the Gaia telescope's second data release from April 2018, an estimated 694 stars will approach the Solar System to less than 5 parsecs in the next 15 million years. Of these, 26 have a good probability to come within 1abbr=offNaNabbr=off and another 7 within 0.5abbr=offNaNabbr=off.[3] This number is likely much higher, due to the sheer number of stars needed to be surveyed; a star approaching the Solar System 10 million years ago, moving at a typical Sun-relative 20–200 kilometers per second, would be 600–6,000 light-years from the Sun at present day, with millions of stars closer to the Sun. The closest encounter to the Sun so far predicted is the low-mass orange dwarf star Gliese 710 / HIP 89825 with roughly 60% the mass of the Sun.[4] It is currently predicted to pass (au) from the Sun in million years from the present, close enough to significantly disturb the Solar System's Oort cloud.[5]
List
The classes of the stars and brown dwarfs are shown in the color of their spectral types (these colors are derived from conventional names for the spectral types and do not necessarily represent the star's observed color). Many brown dwarfs are not listed by visual magnitude but are listed by near-infrared J band apparent magnitude due to how dim (and often invisible) they are in visible color bands (U, B or V). Absolute magnitude (with electromagnetic wave, 'light' band denoted in subscript) is a measurement at a 10-parsec distance across imaginary empty space devoid of all its sparse dust and gas. Some of the parallaxes and resultant distances are rough measurements.[6]
Designation! rowspan="2" data-sort-type="number" Distance (ly (±err))[7] →→ | Constellation
| Coordinates: RA, Dec (Ep J2000, Eq J2000) | Stellar class | Mass | Magnitude | Parallax (mas (±err)) [8] | Notes and additional references |
---|
System | Star or (sub-) brown dwarf | M☉ | data-sort-type="number" | App. | data-sort-type="number" | Abs. |
---|
Solar System | Sun (Sol) | 0.0000158 | | | G2V | 1 | −26.74 | 4.85 | | eight recognized planets and more dwarf planets |
Alpha Centauri | Proxima Centauri (C, V645 Centauri) | 4.2465
| Cen |
| M5.5Ve | 0.122 | 11.09 | 15.53 | 768.0665
| flare star, two confirmed planets (b, 2016, and d, 2022)[9] [10] and a third disputed planet (c, 2019)[11] [12] |
Rigil Kentaurus (A) | 4.3441
|
| G2V | 1.079 | 0.01 | 4.38 | 750.81 [13] | one directly imaged habitable-zone planet candidate (Candidate 1) (2021) |
Toliman (B) |
| K1V | 0.909 | 1.34 | 5.71 | planet b refuted in 2015 |
Barnard's Star (BD+04°3561a) | 5.9629
| Oph |
| M4.0Ve | 0.144 | 9.53 | 13.22 | 546.9759
| flare star, largest-known proper motion,[14] one refuted planet (b)[15] |
Luhman 16 (WISE 1049−5319) | A§ | 6.5029
| Vel |
| L8±1[16] | 0.032 | 10.7 J | 14.2 J | 501.557 [17] | nearest brown dwarfs |
B§ | T1±2 | 0.027 | | |
WISE 0855−0714 | 7.430
| Hya |
| | 0.003-0.010 | 25.0 J | 28.2 J | 439.0 [18] | sub-brown dwarf |
Wolf 359 (CN Leonis) | 7.8558
| Leo |
| M6.0V | 0.090 | 13.44 | 16.55 | 415.1794
| flare star, has 1 candidate & 1 refuted planet[19] |
Lalande 21185 (BD+36°2147, Gliese 411, HD 95735) | 8.3044
| UMa |
| M2.0V | 0.390 | 7.47 | 10.44 | 392.7529
| two known planets (2019, 2021) |
Alpha Canis Majoris | Sirius (A) | 8.7094
| CMa |
| A1V | 2.063 | −1.46 | 1.42 | 374.4896
| brightest star in the night sky |
B | DA2 | 1.018 | 8.44 | 11.34 |
Gliese 65 (Luyten 726–8) | A (BL Ceti) | 8.724
| Cet |
| M5.5Ve | 0.102 | 12.54 | 15.40 | 373.8443
| flare star (Archetypal member), has 1 candidate planet[20] |
B (UV Ceti) | M6.0Ve | 0.100 | 12.99 | 15.85 |
Ross 154 (V1216 Sagittarii) | 9.7063
| Sgr |
| M3.5Ve | 0.17 | 10.43 | 13.07 | 336.0266
| flare star |
Ross 248 (HH Andromedae) | 10.3057
| And |
| M5.5Ve | 0.136 | 12.29 | 14.79 | 316.4812
| flare star |
Ran (Epsilon Eridani) | 10.4749
| Eri |
| K2V | 0.820 | 3.73 | 6.19 | 311.37
| three circumstellar disks, one confirmed planet (AEgir, 2000) and one candidate (c, 2002) |
Lacaille 9352 (Gliese 887) | 10.7241
| PsA |
| M0.5V | 0.486 | 7.34 | 9.75 | 304.1354
| two planets, b and c, with equivocal evidence for a third in the habitable zone (2020) |
Ross 128 (FI Virginis) | 11.0074
| Vir |
| M4.0Vn | 0.168 | 11.13 | 13.51 | 296.3053
| flare star, one planet (b) (2017)[21] |
EZ Aquarii (Gliese 866, Luyten 789-6) | A | 11.109
| Aqr |
| M5.0Ve | 0.11 | 13.33 | 15.64 | 293.60 [22] | A & B flare stars |
B | M? | 0.11 | 13.27 | 15.58 |
C | M? | 0.10 | 14.03 | 16.34 |
Alpha Canis Minoris | Procyon (A) | 11.402
| CMi |
| F5IV–V | 1.499 | 0.38 | 2.66 | 286.05
[23] [24] | |
B | DQZ | 0.602 | 10.70 | 12.98 |
61 Cygni | A (BD+38°4343) | 11.4039
| Cyg |
| | 0.70 | 5.21 | 7.49 | 286.0054
| First star (besides Sun) to have measured distance.[25] B flare star, with possible planet or brown dwarf.[26] Possible circumstellar disk. |
B (BD+38°4344) |
| | 0.63 | 6.03 | 8.31 |
Struve 2398 (Gliese 725, BD+59°1915) | A (HD 173739) | 11.4908
| Dra |
| M3.0V | 0.334 | 8.90 | 11.16 | 283.8401
| flare stars, star B has 2 candidate planets |
B (HD 173740) |
| M3.5V | 0.248 | 9.69 | 11.95 |
Groombridge 34 (Gliese 15) | A (GX Andromedae) | 11.6191
| And |
| M1.5V < | --previous: M3.0V--> | 0.38 | 8.08 | 10.32 | 280.7068
| flare star, two known planets (Ab, 2014, and Ac, 2018)[27] |
---|
B (GQ Andromedae) | M3.5V | 0.15 | 11.06 | 13.30 | flare star |
DX Cancri (G 51-15) | 11.6797
| Cnc |
| M6.5Ve | 0.09 | 14.78 | 16.98 | 279.2496
| flare star |
Epsilon Indi (CPD−57°10015) | A | 11.8670
| Ind |
| K5Ve | 0.754 | 4.69 | 6.89 | 274.8431
| one planet (Ab) (2018) |
Ba§ |
| T1.0V | 0.065 | 12.3 J[28] | 14.5 J | |
Bb§ | T6.0V | 0.050 | 13.2 J | 15.4 J | |
Tau Ceti (BD−16°295) | 11.9118
| Cet |
| G8.5Vp | 0.783 | 3.49 | 5.68 | 273.8097
| one debris disk four confirmed planets (e, f, g, and h) (2012, 2017), four candidate planets (b, c, d, and "i") (2012, 2019) |
GJ 1061 (LHS 1565) | 11.9839
| Hor |
| M5.5V | 0.113 | 13.09 | 15.26 | 272.1615
| has 3 known planets (2019)[29] [30] [31] |
YZ Ceti (LHS 138) | 12.1222
| Cet |
| M4.5V | 0.130 | 12.02 | 14.17 | 269.0573
| flare star, three planets (b, c, and d) (2017)[32] |
Luyten's Star (BD+05°1668) | 12.3485
| CMi |
| M3.5Vn | 0.26 | 9.86 | 11.97 | 264.1269
| two planets (b, c) (2017)[33] and two suspected planets (d, e) (2019)[34] |
Teegarden's Star (SO025300.5+165258) | 12.4970
| Ari |
| M6.5V | 0.08 | 15.14 | 17.22 | 260.9884
| has 3 known planets (2019, 2024)[35] [36] |
Kapteyn's Star (CD−45°1841) | 12.8308
| Pic |
| M1.5VI < | --Current RECONS link gives "M2.0VI"--> | 0.281 | 8.84 | 10.87 | 254.1986
| two refuted planets (b and c) (2014)[37] [38] |
---|
Lacaille 8760 (AX Microscopii) | 12.9472
| Mic |
| M0.0V < | --previous: M2Ve--> | 0.60 | 6.67 | 8.69 | 251.9124
| brightest M dwarf star in night sky, flare star |
---|
SCR 1845−6357 | A | 13.0638
| Pav |
| M8.5V | 0.07 | 17.39 | 19.41 | 249.6651
| |
B§ |
| T6[39] | 0.03 | 13.3 J | 15.3 J |
Kruger 60 (BD+56°2783) | A | 13.0724
| Cep |
| M3.0V | 0.271 | 9.79 | 11.76 | 249.5
| B flare star |
B (DO Cephei) | M4.0V | 0.176 | 11.41 | 13.38 |
DENIS J1048−3956 | 13.1932
| Ant |
| M8.5V | 0.08 | 17.39 | 19.37 | 247.2156
| [40] [41] |
Ross 614 (V577 Monocerotis, Gliese 234) | A (LHS 1849) | 13.363
| Mon |
| M4.5V | 0.223 | 11.15 | 13.09 | 244.07 [42] | A flare star |
B (LHS 1850) | M5.5V | 0.111 | 14.23 | 16.17 |
UGPS J0722-0540§ | 13.43
| Mon |
| T9 | 0.010-0.025 | 16.52 J[43] | 18.45 J | 242.8 [44] | [45] |
Wolf 1061 (Gliese 628, BD−12°4523) | 14.0500
| Oph |
| M3.0V | 0.294 | 10.07 | 11.93 | 232.1390
| three planets (b, c, and d) (2015)[46] |
Van Maanen's Star (Gliese 35, LHS 7) | 14.0718
| Psc |
| DZ7 | 0.67 | 12.38 | 14.21 | 231.7800
| closest-known free-floating white dwarf, third-known white dwarf possible debris disk (1917) |
Gliese 1 (CD−37°15492) | 14.1747
| Scl |
| M1.5 V | 0.45-0.48 | 8.55 | 10.35 | 230.0970
| |
TZ Arietis (Gliese 83.1, L 1159–16) | 14.5780
| Ari |
| M4.5V | 0.14 | 12.27 | 14.03 | 223.7321
| flare star, has one confirmed planet (b) |
Wolf 424 (FL Virginis, LHS 333, Gliese 473) | A | 14.595
| Vir |
| M5.5Ve | 0.143 | 13.18 | 14.97 | 223.4775
| flare stars |
B | M7Ve | 0.131 | 13.17 | 14.96 |
Gliese 687 (LHS 450, BD+68°946) | 14.8395
| Dra |
| M3.0V | 0.401 | 9.17 | 10.89 | 219.7898
| possible flare star, two planets (b) (2014)[47] and (c) (2020)[48] |
Gliese 674 (LHS 449) | 14.8492
| Ara |
| M3.0V | 0.35 | 9.38 | 11.09 | 219.6463
| one planet (b) (2007)[49] |
LHS 292 (LP 731-58) | 14.8706
| Sex |
| M6.5V | 0.08 | 15.60 | 17.32 | 219.3302
| flare star |
Gliese 440 (WD 1142-645, LP 145-141) | 15.1226
| Mus |
| DQ6 | 0.75 | 11.50 | 13.18 | 215.6753
| |
GJ 1245 | A (G 208-44 A) | 15.2001
| Cyg |
| M5.5V | 0.11 | 13.46 | 15.17 | 214.5745
| flare stars |
B (G 208-45) |
| M6.0V | 0.10 | 14.01 | 15.72 |
C (G 208-44 B) |
| M5.5 | 0.07 | 16.75 | 18.46 |
WISE 1741+2553§ | 15.22
| Her |
| T9 | | 16.53 J | 18.18 J | 214.3 [50] | |
Gliese 876 (Ross 780) | 15.2382
| Aqr |
| M3.5V | 0.37 | 10.17 | 11.81 | 214.0380
| four planets (d (2005), c (2001), b (1998), and e (2010))[51] |
WISE 1639−6847§ | 15.450
| TrA |
| Y0.5 | | 20.57 J | 22.10 J | 211.11 [52] | |
LHS 288 (Luyten 143-23) | 15.7586
| Car |
| M5.5V | 0.11 | 13.90 | 15.51 | 206.9698
| |
GJ 1002 | 15.8060
| Cet |
| M5.5V | 0.11 | 13.76 | 15.40 | 206.3500
| two known planets (b & c, 2022)[53] |
DENIS 0255−4700§ | 15.877
| Eri |
| L7.5V | 0.025-0.065 | 22.92 | 24.44 | 205.4251
| |
Groombridge 1618 (Gliese 380) | 15.8857
| UMa |
| K7.0V | 0.67 | 6.59 | 8.16 | 205.3148
| flare star, one suspected debris disk |
Gliese 412 | A | 15.9969
| UMa |
| M1.0V | 0.48 | 8.77 | 10.34 | 203.8876
| |
B (WX Ursae Majoris) |
| M5.5V | 0.10 | 14.48 | 16.05 | flare star |
AD Leonis | 16.1939
| Leo |
| M3.0V | 0.39-0.42 | 9.32 | 10.87 | 201.4064
| flare star, 1 refuted planet (b in 2020)[54] |
Gliese 832 | 16.2005
| Gru |
| M1.5 V | 0.45 | 8.66 | 10.20 | 201.3252
| possible flare star, two planets; one confirmed (b (2008)),[55] and the other now refuted (c (2014))[56] [57] |
Gliese 682 (CD-44 11909) | 16.3328
| Sco |
| M4 V | 0.27 | 10.95 | 12.45 | 199.6944
| has 2 disputed planets |
Omicron2 Eridani (40 Eridani, Gliese 166) | Keid (A) | 16.3330
| Eri |
| K0.5 V | 0.84 | 4.43 | 5.93 | 199.6911
| has 1 refuted planet |
B |
| DA4 | 0.573 | 9.52 | 11.02 |
C |
| M4 V | 0.2036 | 11.24 | 12.74 |
EV Lacertae | 16.4761
| Lac |
| M3.5 V | 0.35 | 10.22 | 11.70 | 197.9573
| record setting stellar flare observed |
70 Ophiuchi (Gliese 702) | A | 16.7074
| Oph |
| K0 V | 0.90 | 4.21 | 5.66 | 195.2166
| |
B |
| K5 V | 0.70 | 6.01 | 7.46 |
Altair (Alpha Aquilae) | 16.730
| Aql |
| A7 IV-Vn | 1.79 | 0.77 | 2.22 | 194.95
| |
EI Cancri (GJ 1116,) | A | 16.800
| |
| M5.5 V | 0.12 | 14.06 | 15.50 | 194.1443
| |
B | M V | 0.10 | 14.92 | 16.36 |
WISE J150649.97+702736.1§ | 16.856
| UMi |
| T6 | | 13.74 J | 15.17 J | 193.5
| |
GJ 3379 | 16.9861
| Ori |
| M3.5 V | 0.2312 | 11.31 | 12.73 | 192.0135
|
DENIS J081730.0−615520§ | 17.002
| Car |
| T6 | 0.015 | 13.61 J | 15.03 J | 191.8362
| |
Gliese 445 (LHS 2459,) | 17.1368
| Cam |
| M3.5 V | 0.14 | 10.79 | 12.19 | 190.3251
| |
2MASS J15404342−5101357 | 17.3738
| Nor |
| M7 V | 0.090 | 15.26 | 16.63 | 187.7290
| |
2MASS 0939−2448 | A§ | 17.41
| Ant |
| T8 V | 0.019–0.048 | 15.61 J | 16.97 J | 187.3 [58] | binary brown dwarf |
B§ | T8 V | 0.019–0.038 | | |
GJ 3323 (LHS 1723,) | 17.5309
| Eri |
| M4 V | 0.1705 | 12.22 | 13.57 | 186.0466
| has 2 known planets |
Gliese 526 (Wolf 498, HD 119850) | 17.7263
| Boo |
| M1 V | 0.28 | 8.46 | 9.78 | 183.9962
| |
Stein 2051 (Gliese 169.1,) | A | 17.9925
| Cam |
| M4 V | 0.252 | 11.04 | 12.33 | 181.2730
| |
B |
| DC5 | 0.675 | 12.43 | 13.72 |
2MASS J11145133−2618235§ | 18.20
| Hya |
| T7.5 | 0.029–0.048 | 15.86 J | 17.12 J | 179.2 [59] | |
Gliese 251 (Wolf 294, HD 265866) | 18.2146
| Gem |
| M3 V | 0.360 | 10.02 | 11.29 | 179.0629
| has 1 known planet |
LP 816-60 | 18.3305
| Cap |
| M3.5 V | 0.224 | 11.50 | 12.75 | 177.9312
| |
WISE 0350−5658§ | 18.49
| Ret |
| Y1 | | 22.47 J | 23.70 J | 176.4 [60] | |
LSR J1835+3259 | 18.5534
| Lyr |
| M8.5 V | 0.053 | 18.27 | 19.50 | 175.7930
| |
Gliese 205 (Wolf 1453, HD 36395) | 18.6042
| Ori |
| M1 V | 0.556 | 7.95 | 9.17 | 175.3131
| |
2MASS J04151954−0935066§ | 18.62
| Eri |
| T8 | 0.03 | 15.34 J | 16.56 J | 175.2
| |
Gliese 229 (HD 42581) | A | 18.7906
| Lep |
| M1.5 V | 0.579 | 8.14 | 9.34 | 173.5740
| has 2 known planets |
B§ | T6 V | 0.058 | 14.01 J | 15.21 J |
Alsafi (Sigma Draconis) | 18.7993
| Dra |
| G9 V | 0.85 | 4.67 | 5.87 | 173.4939
| |
Ross 47 (Gliese 213) | 18.8883
| Ori |
| M4 V | 0.35 | 11.57 | 12.76 | 172.6762
| |
Gliese 570 (Lalande 27173, 33 G. Librae) | A | 19.1987
| Lib |
| K4 V | 0.802 | 5.64 | 6.79 | 169.8843
| |
B | M1.5 V | 0.55 | 8.30 | 9.45 |
C | M | 0.35 | 9.96 | 11.11 |
D§ | T7.5 | 0.05 | 15.32 J | 16.47 J |
Gliese 693 (Luyten 205–128) | 19.2078
| Pav |
| M3 V | 0.26 | 10.76 | 11.91 | 169.8042
| |
Gliese 754 (Luyten 347–14) | 19.2724
| Tel |
| M4 V | 0.173 | 12.23 | 13.37 | 169.2351
| has 1 candidate planet |
Gliese 908 (Lalande 46650, BR Piscium) | 19.2745
| Psc |
| M1 V | 0.37 | 8.98 | 10.12 | 169.2163
| |
Gliese 752 (Wolf 1055, HD 180617) | A | 19.2922
| Aql |
| M2.5 V | 0.46 | 9.10 | 10.24 | 169.0615
| has 1 known planet |
|
| M8 V | 0.075 | 17.45 | 18.59 | very small and very dim red dwarf |
Gliese 588 (CD-40 9712) | 19.2996
| Lup |
| M2.5 V | 0.43 | 9.31 | 10.45 | 168.9965
| has 2 candidate planets |
Eta Cassiopeiae (Gliese 34) | Achird (A) | 19.3314
| Cas |
| G3 V | 0.972 | 3.46 | 4.60 | 168.7186
| |
B | K7 V | 0.57 | 7.51 | 8.65 |
36 Ophiuchi (Gliese 663) | Guniibuu (A) | 19.4185
| Oph |
| K1.5 V | 0.85 | 5.07 | 6.20 | 167.9617
| |
B |
| K1 V | 0.85 | 5.08 | 6.21 |
C |
| K5 V | 0.71 | 6.32 | 7.45 |
YZ Canis Minoris (Ross 882, Gliese 285) | 19.5330
| CMi |
| M4 V | 0.308 | 11.19 | 12.30 | 166.9769
| |
WISE 1541−2250§ | 19.54
| Lib |
| | 0.011 | 20.99 J | 22.10 J | 166.9
| |
GJ 1005 | A | 19.577
| Cet |
| M3.5 V | 0.179 | 11.60 | 12.71 | 166.6 [61] | distance uncertain: 16.28±0.75, 17.91±0.67, 17.0±1.5, 16.26±0.76, 17.26, 19.695±0.095 ly |
B | M V | 0.112 | 14.02 | 15.13 |
HR 7703 (279 G. Sagittarii, HD 191408, Gliese 783,) | A | 19.609
| Sgr |
| K2.5 V | 0.65 | 5.31 | 6.41 | 166.3272
| |
B | M4 V | 0.24 | 11.50 | 12.60 |
82 G. Eridani (e Eridani, Gliese 139, HD 20794) | 19.7045
| Eri |
| G8 V | 0.70 | 4.26 | 5.35 | 165.5242
| has 3 confirmed planets, 3 candidate planets, hot and cold dust disks |
Gliese 268 (Ross 986, QY Aurigae) | A | 19.7414
| Aur |
| M4.5 V | 0.226 | 12.05 | 13.14 | 165.2147
| |
B | M V | 0.192 | 12.45 | 13.54 |
Delta Pavonis | 19.893
| Pav |
| G8 IV | 1.051 | 3.55 | 4.62 | 163.9544
| has 1 candidate planet |
SIMP J013656.5+093347§ | 19.955
| Psc |
| T2.5 | 0.012 | 13.25 J | 14.32 J | 163.4478
| rogue planet, 12.7 MJ |
2MASS 0937+2931§ | 19.96
| Leo |
| T7 | 0.040 | 14.65 J | 15.71 J | 163.39 [62] | |
System | Star or (sub-) brown dwarf | Distance (ly (±err)) | Constellation
| Coordinates: RA, Dec (Ep J2000, Eq J2000) | Stellar class | Mass M☉ | data-sort-type="number" | App. | data-sort-type="number" | Abs. | Parallax (mas (±err)) [63] | Notes and additional references |
---|
Designation | Magnitude | |
---|
Distant future and past encounters
Over long periods of time, the slow independent motion of stars change in both relative position and in their distance from the observer. This can cause other currently distant stars to fall within a stated range, which may be readily calculated and predicted using accurate astrometric measurements of parallax and total proper motions, along with spectroscopically determined radial velocities. Although extrapolations can be made into the past or future, they are subject to increasingly significant cumulative errors over very long periods.[2] Inaccuracies of these measured parameters make determining the true minimum distances of any encountering stars or brown dwarfs fairly difficult.[64]
One of the first stars known to approach the Sun particularly close is Gliese 710. The star, whose mass is roughly half that of the Sun, is currently 62 light-years from the Solar System. It was first noticed in 1999 using data from the Hipparcos satellite, and was estimated to pass less than 1.3ly from the Sun in 1.4 million years.[65] With the release of Gaia's observations of the star, it has since been refined to a much closer 0.178ly, close enough to significantly disturb objects in the Oort cloud, which extends 1.2ly from the Sun.[66]
Gaia third data release has provided updated values for many of the candidates in the table below.[67] [68] [69] [70]
See also
Related lists
External links
Notes and References
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