Chi1 Orionis

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Chi¹ Orionis A
Observation data Epoch J2000 Equinox J2000
Star map of the Bayers Stars in Orion. Chi¹ Orionis is indicated.
Constellation	Orion
Right ascension	05^h 54^m 22.98^s^[1]
Declination	+20° 16′ 34.2″^[1]
Apparent magnitude (V)	4.39
Characteristics
Spectral type	G0 V
U−B color index	0.07
B−V color index	0.59
Astrometry

Radial velocity (R_v)	-13.4 km/s
Proper motion (μ)	RA: -162.54 ± 0.28^[1] mas/yr Dec.: -99.51 ± 0.16^[1] mas/yr
Parallax (π)	115.43 ± 0.27^[1] mas
Distance	28.26 ± 0.07 ly (8.66 ± 0.02 pc)
Absolute magnitude (M_V)	4.67

Details

Radius	0.979 ± 0.009^[2] R_☉
Luminosity	1.081 ± 0.018^[2] L_☉
Temperature	5,955 ± 6.1^[3] K
Metallicity [Fe/H]	-0.01^[4] dex
Rotation	5.2 days^[4]
Age	300–400^[5] Myr

Other designations
54 Ori, Gl 222 A, HR 2047, BD +20°1162, HD 39587, LTT 11743, GCTP 1354.00, SAO 77705, HIP 27913.

Chi¹ Orionis (χ¹ Ori, χ¹ Orionis) is a star about 28 light years away.^[1] It is in the constellation Orion.

χ¹ Ori is a G0V main-sequence star. It has a faint companion with a mass estimated at about 15% of the mass of the Sun, an orbital period of 14.1 years, and an estimated stellar class of M6. The companion orbits an average distance of 6.1 AU from the primary, but has a fairly high orbital eccentricity, ranging from 3.3 AU out to 8.9 AU from the primary. Because of this red dwarf companion, the likelihood of habitable planets in this system is low.

χ¹ Ori is a candidate stream star member of the Ursa Major Moving Group, although there is some evidence to the contrary.^[4]

References

↑ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
↑ 2.0 2.1 Boyajian, Tabetha S. et al. (February 2012), "Stellar Diameters and Temperatures. I. Main-sequence A, F, and G Stars", The Astrophysical Journal 746 (1): 101, arXiv:1112.3316, Bibcode:2012ApJ...746..101B, doi:10.1088/0004-637X/746/1/101 . See Table 10.
↑ Kovtyukh et al. (2003), "High precision effective temperatures for 181 F-K dwarfs from line-depth ratios", Astronomy and Astrophysics 411 (3): 559–564, arXiv:astro-ph/0308429, Bibcode:2003A&A...411..559K, doi:10.1051/0004-6361:20031378
↑ 4.0 4.1 4.2 Maldonado, J. et al. (October 2010), "A spectroscopy study of nearby late-type stars, possible members of stellar kinematic groups", Astronomy and Astrophysics 521: A12, arXiv:1007.1132, Bibcode:2010A&A...521A..12M, doi:10.1051/0004-6361/201014948
↑ Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008), "Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics", The Astrophysical Journal 687 (2): 1264–1293, arXiv:0807.1686, Bibcode:2008ApJ...687.1264M, doi:10.1086/591785

External links

Chi-1 Orionis by Professor Jim Kaler.
Chi1 Orionis 2 at SolStation.

Nearest star systems

Star systems (including brown dwarf systems) within 30 light-years from Earth.

0–5 ly →

G V (Yellow)	Solar System (0 ly; 1 star, 8 planets) Alpha Centauri (4.365 ± 0.007 ly; 3 stars: A B C (Proxima Centauri) (4.2421 ± 0.0016 ly); 1 planet: Bb)

← 5–10 ly →

A V (White)	Sirius (8.60 ± 0.04 ly; 2 stars)

M V (Red dwarf)	Barnard's Star (5.979 ± 0.003 ly; 1 star) Wolf 359 (7.78 ± 0.04 ly; 1 star) Lalande 21185 (8.31 ± 0.01 ly; 1 star) Luyten 726-8 (8.73 ± 0.06 ly; 2 stars) Ross 154 (9.69 ± 0.06 ly; 1 star)

Brown
dwarf

L	Luhman 16 (6.58 ± 0.49 ly; 2 brown dwarfs)

← 10–15 ly →

F V (Yellow-white)	Procyon (11.46 ± 0.05 ly; 2 stars)

G V (Yellow)	Tau Ceti (11.905 ± 0.007 ly; 1 star, 5? planets: b c d e f)

K V (Orange)	Epsilon Eridani (10.489 ± 0.005 ly; 1 star, 1 (2?) planets: b c) 61 Cygni (11.41 ± 0.02 ly; 2 stars) Epsilon Indi (11.81 ± 0.01 ly; 1 star, 2 brown dwarfs, 1? planets)

M V
(Red dwarf)

Ross 248 (10.309 ± 0.018 ly; 1 star)
Lacaille 9352 (10.68 ± 0.02 ly; 1 star)
Ross 128 (10.94 ± 0.08 ly; 1 star)
EZ Aquarii (11.27 ± 0.17 ly; 3 stars)
Struve 2398 (11.64 ± 0.09 ly; 2 stars)
Groombridge 34 (11.654 ± 0.025 ly; 2 stars)
DX Cancri (11.83 ± 0.13 ly; 1 star)
GJ 1061 (11.99 ± 0.06 ly; 1 star)
YZ Ceti (12.12 ± 0.14 ly; 1 star)
Luyten's Star (12.25 ± 0.03 ly; 1 star)
Kapteyn's Star (12.76 ± 0.05 ly; 1 star)
Lacaille 8760 (12.87 ± 0.04 ly; 1 star)
Kruger 60 (13.05 ± 0.10 ly; 2 stars)
Ross 614 (13.34 ± 0.05 ly; 2 stars)
Wolf 1061 (14.00 ± 0.10 ly; 1 star)
Gliese 1 (14.16 ± 0.06 ly; 1 star)
Wolf 424 (14.31 ± 0.29 ly; 2 stars: A
B)
TZ Arietis (14.51 ± 0.19 ly; 1 star)
Gliese 687 (14.77 ± 0.06 ly; 1 star)
LHS 292 (14.81 ± 0.25 ly; 1 star)
G 208-44/208-45 (14.81 ± 0.07 ly; 3 stars: A
B
G 208-45)
Gliese 674 (14.81 ± 0.10 ly; 1 star, 1 planet: b)

White
dwarf

DZ	van Maanen's star (14.02 ± 0.11 ly; 1 star)

Brown
dwarf

M	Teegarden's star (12.57 ± 0.04 ly; 1 brown dwarf) SCR 1845-6357 (12.57 ± 0.05 ly; 2 brown dwarfs) DEN 1048-3956 (13.12 ± 0.06 ly; 1 brown dwarf)

T	WISE 1506+7027 (11.1+2.3 −1.3 ly; 1 brown dwarf) UGPS 0722-05 (13.43 ± 0.13 ly; 1 brown dwarf)

Y	WISE 0350-5658 (12.1+5.2 −1.3 ly; 1 brown dwarf)

← 15–20 ly →

A V (White)	Altair (16.73 ± 0.05 ly; 1 star)

G
(Yellow)

IV	Delta Pavonis (19.92 ± 0.02 ly; 1 star)

V	Sigma Draconis «Alsafi» (18.77 ± 0.02 ly; 1 star) Eta Cassiopeiae «Achird» (19.42 ± 0.06 ly; 2 stars) e (82 G.) Eridani (19.71 ± 0.02 ly; 1 star, 3 planets: b c d)

K V (Orange)	Groombridge 1618 (15.89 ± 0.04 ly; 1 star) Omicron² (40) Eridani «Keid» (16.26 ± 0.02 ly; 3 stars) 70 Ophiuchi (16.58 ± 0.07 ly; 2 stars) Gliese 570 (19.00 ± 0.10 ly; 3 stars, 1 brown dwarf) 36 Ophiuchi (19.47 ± 0.07 ly; 3 stars) HR 7703 (19.62 ± 0.03 ly; 2 stars)

M V
(Red dwarf)

Gliese 876 (15.21 ± 0.04 ly; 1 star, 4 planets: d
c
b
e)
GJ 1002 (15.31 ± 0.26 ly; 1 star)
LHS 288 (15.55 ± 0.20 ly; 1 star)
Gliese 412 (15.81 ± 0.08 ly; 2 stars)
AD Leonis (15.94 ± 0.22 ly; 1 star)
Gliese 832 (16.16 ± 0.08 ly; 1 star, 1 planet: b)
EV Lacertae (16.46 ± 0.07 ly; 1 star)
Gliese 682 (16.60 ± 0.20 ly; 1 star)
GJ 1116 (17.06 ± 0.23 ly; 2 stars)
GJ 3379 (17.10 ± 0.17 ly; 1 star)
LHS 1723 (17.36 ± 0.12 ly; 1 star)
Gliese 445 (17.42 ± 0.15 ly; 1 star)
Wolf 498 (17.66 ± 0.07 ly; 1 star)
Stein 2051 (18.07 ± 0.08 ly; 2 stars)
Gliese 251 (18.31 ± 0.15 ly; 1 star)
Gliese 205 (18.53 ± 0.11 ly; 1 star)
L 449-1 (18.6 ± 3.9 ly; 1 star)
LP 816-060 (18.63 ± 0.37 ly; 1 star)
Gliese 229 (18.77 ± 0.11 ly; 1 star, 1 brown dwarf)
Ross 47 (19.02 ± 0.11 ly; 1 star)
Gliese 693 (19.06 ± 0.25 ly; 1 star)
Gliese 752 (19.08 ± 0.06 ly; 2 stars: A
B (vB 10))
Gliese 754 (19.28 ± 0.18 ly; 1 star)
Gliese 588 (19.35 ± 0.15 ly; 1 star)
GJ 1005 (19.37 ± 0.10 ly; 2 stars)
Gliese 908 (19.41 ± 0.14 ly; 1 star)
YZ Canis Minoris (19.51 ± 0.24 ly; 1 star)
2MASS J05332802-4257205 (~19.6 ly; 1 star)
2MASS J18450079-1409036 (~19.6 ly; 2 stars)
Gliese 338 (19.92 ± 0.31 ly; 2 stars)
Gliese 268 (19.96 ± 0.22 ly; 2 stars)

White
dwarf

DQ	LP 145-141 (15.09 ± 0.08 ly; 1 star) G 240-72 (19.80 ± 0.29 ly; 1 star)

Brown
dwarf

M	LP 944-020 (16.19 ± 0.35 ly; 1 brown dwarf) 2MASS 1835+3259 (18.48 ± 0.05 ly; 1 brown dwarf)

L	DEN 0255-4700 (16.20 ± 0.32 ly; 1 brown dwarf)

T	DEN 0817-6155 (16.1+1.1 −1.0 ly; 1 brown dwarf) WISE J0521+1025 (16.3* ± 4.2 ly; 1 brown dwarf)* 2MASS 0939-2448 (17.41 ± 0.44 ly; 2 brown dwarfs) WISE 1741+2553 (18.1+1.6 −1.4 ly; 1 brown dwarf) 2MASS 1114-2618 (18.20 ± 0.14 ly; 1 brown dwarf) 2MASS 0415-0935 (18.62 ± 0.18 ly; 1 brown dwarf) 2MASS 0937+2931 (19.97 ± 0.20 ly; 1 brown dwarf)

Y	WISE 1639-6847 (16.3+1.8 −1.5 ly; 1 brown dwarf) WISE 0359-5401 (19.2+4.2 −2.6 ly; 1 brown dwarf)

← 20–25 ly →

G
(Yellow)

IV	Beta Hydri (24.33 ± 0.02 ly; 1 star)

V	Xi Boötis (21.89 ± 0.07 ly; 2 stars)

VI	Mu Cassiopeiae (Marfak-West) (24.64 ± 0.15 ly; 2 stars)

K V (Orange)	HR 8832 (21.34 ± 0.04 ly; 1 star) HR 753 (23.42 ± 0.08 ly; 3 stars) Gliese 667 (23.60 ± 0.12 ly; 3 stars: A B C; 5 (7?) planets: Cb Ch? Cc Cf Ce Cd Cg?) HD 4628 (24.31 ± 0.09 ly; 1 star) 107 Piscium (24.57 ± 0.09 ly; 1 star)

M V
(Red dwarf)

Gliese 784 (20.22 ± 0.13 ly; 1 star)
HN Librae (20.29 ± 0.25 ly; 1 star)
Gliese 581 (20.38 ± 0.21 ly; 1 star, 4 (6?) planets: e
b
c
g?
d
f?)
EQ Pegasi (20.40 ± 0.20 ly; 2 stars)
LHS 2090 (20.8 ± 0.4 ly; 1 star)
LHS 337 (20.8 ± 0.3 ly; 1 star)
Furuhjelm 46 (20.9 ± 0.2 ly; 2 stars)
G 180-060 (20.9 ± 0.6 ly; 1 star)
V1054 Ophiuchi (21.05 ± 0.07 ly; 5 stars: Ba
Bb
A
Gl 643
C (vB 8))
LP 71-82 (~21.2 ly; 1 star)
G 161-71 (~21.3 ly; 1 star)
Gliese 625 (21.3 ± 0.2 ly; 1 star)
GJ 1128 (21.3 ± 0.4 ly; 1 star)
GL Virginis (21.3 ± 0.4 ly; 1 star)
LHS 3003 (21.4 ± 0.3 ly; 1 star)
Gliese 408 (21.8 ± 0.3 ly; 1 star)
SCR J1546−5534 (~21.9 ly; 1 star)
Gliese 829 (21.9 ± 0.3 ly; 2 stars)
G 41-14 (22.1 ± 0.3 ly; 3 stars)
EE Leonis (22.2 ± 0.5 ly; 1 star)
Gliese 880 (22.3 ± 0.2 ly; 2 stars)
Gliese 299 (22.3 ± 0.5 ly; 1 star)
LP 771-095 (22.7 ± 0.4 ly; 3 stars)
GJ 1068 (22.7 ± 0.3 ly; 1 star)
2MASS J20360829-3607115 (~22.8 ly; 1 star)
L 369-44 (~22.8 ly; 2 stars)
2MASS J18522528-3730363 (~22.8 ly; 1 star)
G 161-7 (~22.8 ly; 2 stars)
Gliese 809 (23.0 ± 0.1 ly; 2 stars)
Gliese 393 (23.0 ± 0.4 ly; 1 star)
Gliese 54 (23.1 ± 0.6 ly; 2 stars)
SCR J0740−4257 (~23.5 ly; 1 star)
L 43-72 (23.5 ± 4.9 ly; 1 star)
GJ 1286 (23.6 ± 0.6 ly; 1 star)
GJ 4063 (23.6+9.6
−5.3 ly; 1 star)
GJ 4053 (23.7 ± 0.9 ly; 1 star)
GJ 4274 (24.3 ± 0.9 ly; 1 star)
GJ 3991 (24.28 ± 0.36 ly; 2 stars)
GJ 4248 (24.29 ± 0.24 ly; 1 star)
Gliese 109 (24.5 ± 0.4 ly; 1 star)
GJ 1224 (24.6 ± 0.7 ly; 1 star)
GJ 3378 (24.7 ± 0.5 ly; 1 star)
Gliese 514 (24.97 ± 0.20 ly; 1 star)

White
dwarf

DZ	LP 658-2 (20.89 ± 0.11 ly; 1 star)

Brown
dwarf

L	2MASS 1507-1627 (23.91 ± 0.11 ly; 1 brown dwarf)

T	2MASS 1503+2525 (20.75 ± 0.29 ly; 1 brown dwarf) SIMP J013656.5+093347 (20.9* ± 1.0 ly; 1 brown dwarf)* WISE 1928+2356 (~22.8 ly; 1 brown dwarf) WISE 0005+3737 (~23.2 ly; 1 brown dwarf) WISE 0049+2151 (~24.1 ly; 1 brown dwarf) WISE 0254+0223 (24.2+3.0 −2.4 ly; 1 brown dwarf)

Y	WISE 0146+4234 (~20.5 ly; 1 brown dwarf) WISE 2056+1459 (22.6+4.3 −3.1 ly; 1 brown dwarf) WISE 0713-2917 (~23.1 ly; 1 brown dwarf) WISE 0410+1502 (24.7+3.2 −2.5 ly; 1 brown dwarf)

← 25–30 ly →

A V (White)	Vega (25.04 ± 0.07 ly; 1 star) Fomalhaut (25.13 ± 0.09 ly; 3 stars: A B (TW Piscis Austrini) (24.82 ± 0.12 ly) C (LP 876-10) (24.70 ± 0.22 ly); 1 planet: Ab)

F V (Yellow-white)	Pi³ Orionis «Tabit» (26.2 ± 0.2 ly; 1 star) Chi Draconis (26.22 ± 0.11 ly; 2 stars) Zeta Tucanae (28.0 ± 0.2 ly; 1 star) Gamma Leporis (29.3 ± 0.2 ly; 2 stars)

G
(Yellow)

IV	Mu Herculis (27.4 ± 0.2 ly; 4 stars)

V	Xi Ursae Majoris «Alula Australis» (27.25 ± 0.18 ly; 3 stars, 2 brown dwarfs) Beta Canum Venaticorum «Chara» (27.3 ± 0.2 ly; 1 star) 61 Virginis (27.8 ± 0.2 ly; 1 star, 3 planets: b c d) Chi¹ Orionis (28.3 ± 0.3 ly; 2 stars) 41 G. Arae (28.7 ± 0.3 ly; 2 stars) Beta Comae Berenices (29.9 ± 0.2 ly; 1 star) Kappa¹ Ceti (29.9 ± 0.2 ly; 1 star)

VI	Groombridge 1830 (29.9 ± 0.2 ly; 1 star)

K
(Orange)

IV	Delta Eridani «Rana» (29.49 ± 0.06 ly; 1 star)

V	Gliese 673 (25.12 ± 0.14 ly; 1 star) Gliese 884 (26.6 ± 0.3 ly; 1 star) p Eridani (26.57 ± 0.31 ly; 2 stars) Gliese 250 (28.4 ± 0.3 ly; 2 stars) HR 1614 (28.8 ± 0.3 ly; 1 star) HR 7722 (28.8 ± 0.3 ly; 1 star, 2 planets: b c)

M V
(Red dwarf)

LHS 1070 (25.2 ± 0.5 ly; 3 stars)
Gliese 701 (25.3 ± 0.3 ly; 1 star)
GJ 1093 (25.3 ± 0.7 ly; 1 star)
Gliese 480.1 (25.4 ± 0.8 ly; 1 star)
SIPS 1259-4336 (25.4 ± 0.2 ly; 1 star)
Gliese 382 (25.48 ± 0.30 ly; 1 star)
DG Canum Venaticorum (25.9+5.5
−3.8 ly; 1 star)
Wolf 922 (25.9 ± 0.5 ly; 2 stars)
Gliese 300 (25.97 ± 0.20 ly; 1 star)
SSSPM J1138-7722 (26 ± 3 ly; 1 star)
Gliese 793 (26.08 ly; 1 star)
2MASS J12140866-2345172 (~26.1 ly; 1 star)
2MASS J19513587-3510375 (~26.1 ly; 1 star)
SCR 0838-5855 (~26.1 ly; 1 star)
Gliese 257 (26.2 ± 0.6 ly; 2 stars)
Gliese 623 (26.2 ± 0.3 ly; 2 stars)
GJ 1289 (26.4 ± 0.6 ly; 1 star)
GJ 1105 (26.4 ± 0.7 ly; 1 star)
Gliese 686 (26.5 ± 0.4 ly; 1 star)
Gliese 493.1 (26.6 ± 1.0 ly; 1 star)
Gliese 48 (26.6 ± 0.3 ly; 1 star)
Gliese 747 (26.6 ± 0.4 ly; 2 stars)
SCR 1138-7721 (26.7 ± 0.7 ly; 1 star)
Gliese 486 (26.8 ± 0.6 ly; 1 star)
GJ 1151 (26.8 ± 0.7 ly; 1 star)
GJ 1227 (26.9 ± 0.4 ly; 1 star)
GJ 1230 (27.0+1.7
−1.5 ly; 3 stars)
Gliese 232 (27.2 ± 0.4 ly; 1 star)
AP Columbae (27.4 ± 0.2 ly; 1 star)
GJ 3146 (27.6 ± 1.7 ly; 1 star)
GJ 1154 (27.6 ± 0.9 ly; 1 star)
GJ 1057 (27.6 ± 0.9 ly; 1 star)
Gliese 618 (27.6 ± 0.6 ly; 2 stars)
GJ 3076 (27.6+6.0
−4.2 ly; 1 star)
SCR 0640-0552 (~27.7 ly; 1 star)
HD 32450 (27.8 ± 0.4 ly; 2 stars)
Gliese 450 (27.9 ± 0.3 ly; 1 star)
Gliese 877 (28.1 ± 0.3 ly; 1 star)
Gliese 745 (28.1 ± 0.6 ly; 2 stars)
Gliese 867 (28.2 ± 0.4 ly; 2 stars)
GJ 3454 (28.2 ± 0.2 ly; 2 stars)
SCR 0630-7643 (28.6 ± 0.5 ly; 2 stars)
HU Delphini (28.6 ± 0.5 ly; 2 stars)
LDS 169 (28.6 ± 0.8 ly; 2 stars)
Gliese 849 (28.6 ± 0.5 ly; 1 star, 2 planets: b
c)
GJ 1103 (28.7 ± 0.8 ly; 2 stars)
GJ 1207 (28.8 ± 0.4 ly; 1 star)
Gliese 465 (29.0 ± 0.7 ly; 1 star)
GJ 1277 (29.0 ± 4.6 ly; 1 star)
GJ 3128 (29.1 ± 0.5 ly; 1 star)
V374 Pegasi (29.1 ± 0.9 ly; 1 star)
Gliese 357 (29.3 ± 0.5 ly; 1 star)
Gliese 595 (29.4 ± 3.5 ly; 1 star)
Gliese 433 (29.5 ± 0.5 ly; 1 star, 2 planets: b
c)
Gliese 424 (29.7 ± 0.3 ly; 1 star)
GJ 3801 (29.7 ± 0.9 ly; 1 star)
GJ 2066 (29.9 ± 0.5 ly; 1 star)
LHS 224 (29.9 ± 0.8 ly; 2 stars)
SCR 1826-6542 (~30 ly; 1 star)

White
dwarf

DA	G 99-47 (26.1 ± 0.8 ly; 1 star) WD 2359-434 (26.7 ± 0.3 ly; 1 star) Gliese 318 (28.7 ± 0.5 ly; 1 star)

DC	L 97-12 (25.83 ± 0.27 ly; 1 star)

DQ	LHS 1126 (29.5 ± 0.3 ly; 1 star)

DZ	Wolf 489 (26.9 ± 0.8 ly; 1 star) LP 701-29 (27.9 ± 0.2 ly; 1 star) L 745-46 (29.7 ± 0.2 ly; 2 stars)

Brown
dwarf

M	DENIS 0334-49 (27.04 ± 0.83 ly; 1 brown dwarf) GJ 3517 (27.8 ± 0.4 ly; 1 brown dwarf)

L	WISE 0607+2429 (25.4+4.6 −3.9 ly; 1 brown dwarf) 2MASS 0835-08 (27.9+2.9 −2.4 ly; 1 brown dwarf) WISE 1647+5632 (28.1+9.4 −5.6 ly; 1 brown dwarf) 2MASS 0036+1821 (28.6 ± 0.2 ly; 1 brown dwarf) WISE 1800+0134 (28.7* ± 3.3 ly; 1 brown dwarf)* 2MASS J04390101-2353083 (29.5 ± 1.1 ly; 1 brown dwarf) SDSS J1416+1348 (29.7 ± 0.3 ly; 2 brown dwarfs) 2MASS J16452211-1319516 (29.7 ± 1.7 ly; 1 brown dwarf) 2MASS J03552337+1133437 (29.8+0.4 −0.3 ly; 1 brown dwarf)

T	2MASS 0348-6022 (~25.4 ly; 1 brown dwarf) 2MASS 0729-39 (25.8 ± 1.8 ly; 1 brown dwarf) UGPS J0521+3640 (26.7+3.9 −3.2 ly; 1 brown dwarf) WISE 0313+7807 (~28.0 ly; 1 brown dwarf) 2MASS 0727+1710 (29.0 ± 0.2 ly; 1 brown dwarf)

Y	WISE 1405+5534 (25.3+4.4 −3.2 ly; 1 brown dwarf) WISE 2220-3628 (~26.4 ly; 1 brown dwarf) WISE 0647-6232 (28.4+3.3 −2.7 ly; 1 brown dwarf)

In left column are stellar classes of primary members of star systems. Bold are systems containing at least one component with absolute magnitude of +8.5 or brighter. Italic are systems without known trigonometric parallax.

v t e Stars of Orion

Bayer	α (Betelgeuse) β (Rigel) γ (Bellatrix) δ (Mintaka) ε (Alnilam) ζ (Alnitak) η (Algjebba) θ¹ (Trapezium Cluster): θ¹ A θ¹ B θ¹ C θ¹ D θ² ι (Hatsya) κ (Saiph) λ (Meissa) μ ν ξ ο¹ ο² π¹ π² π³ (Tabit) π⁴ π⁵ π⁶ ρ σ τ υ (Thabit) φ¹ φ² χ¹ χ² ψ ω

Flamsteed	5 6 11 12 13 14 15 16 18 21 22 23 25 26 27 29 31 32 33 35 38 42 45 49 51 52 55 56 57 59 60 63 64 65 66 68 69 71 72 73 74 75

Variable	S T U W Z RS UX VV YY AN BF BL BM BN BQ CK CN CO CZ DN DY ER EW EY FH FT FU FZ GG GP GU GW HK KX V346 V351 V359 V371 V372 V380 V586 V901 V1031 V1046 V1051 V1107 V1118 V1149 V1155 V1156 V1159 V1162 V1179 V1192 V1197 V1261 V1307 V1309 V1355 V1357 V1366 V1369 V1377 V1389 V1647 V1649 V1788

HR	1507 1519 1522 1534 1553 1571 1574 1576 1578 1591 1596 1600 1613 1618 1619 1646 1681 1684 1685 1687 1691 1697 1701 1703 1709 1717 1724 1748 1759 1763 1764 1778 1781 1782 1786 1799 1803 1806 1807 1809 1819 1820 1826 1830 1832 1833 1840 1848 1861 1873 1874 1883 1886 1887 1891 1908 1911 1913 1918 1920 1923 1933 1940 1942 1950 1952 1955 1959 1967 1978 1986 1987 1988 2007 2014 2019 2024 2030 2039 2048 2051 2057 2070 2071 2075 2076 2093 2097 2099 2113 2133 2174 2184 2191 2214 2218 2222 2231 2233 2235 2236 2251 2253 2259 2269 2275 2287 2302

HD	30869 31253 31423 33636 34445 35575 35775 36150 36558 36629 36814 36840 37605 37806 37903 38087 38801 290327

Gliese	Gliese 179 Gliese 182 Gliese 205 Gliese 208 Gliese 221 GJ 3379

Other	BD +03 740 Becklin–Neugebauer Object G 99-37 G 99-47 LkHα 208 LP 658-2 2MASS J05352184-0546085 OMC-2 FIR 4 Orion source I Reipurth 50 Ross 47 RX J0529.4+0041 S Ori 52 S Ori 70 4U 0614+091 WISE J0457-0207 WISE J0521+1025

List

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