GJ 1245

GJ 1245 A / B / C
Observation data Epoch J2000 Equinox J2000
Constellation	Cygnus
Right ascension	19^h 53^m 54.492^s
Declination	+44° 24′ 53.41″
Apparent magnitude (V)	13.41 / 14.01 / 16.75
Characteristics
Spectral type	M5.5 / M6 / M5.5
Variable type	Suspected
Astrometry

Proper motion (μ)	RA: 397 mas/yr Dec.: -482 mas/yr
Parallax (π)	215 ± 3.0 mas
Distance	15.2 ± 0.2 ly (4.65 ± 0.06 pc)
Absolute magnitude (M_V)	15.31 / 15.72 / 18.46

Details

Luminosity	0.000084 / 0.000048 L_☉

Orbit
Companion	GJ 1245 B
Semimajor axis (a)	33 AU"
Other designations
V1581 Cyg, NLTT 48414, LHS 3494, GJ 1245 A,.
Database references
SIMBAD	data

GJ 1245 or V1581 Cygni is a triple star system, 14 light-years away, relatively close to our Solar System. All of the stars are rather dim. It is the 38th closest stellar system to the solar system, located in the constellation Cygnus.^[1]

References

^ "The One Hundred Nearest Star Systems". RECONS. http://www.chara.gsu.edu/RECONS/TOP100.posted.htm. Retrieved 2010-04-13.

External links

← Star systems within 10–15 light-years →

Star systems (including brown dwarf systems) within 10–15 light-years from Earth.

F V (Yellow-white)	Procyon (11.44 ± 0.02 ly; 2 stars)

G V (Yellow)	Tau Ceti (11.905 ± 0.007 ly; 1 star)

K V (Orange)	Epsilon Eridani (10.480 ± 0.003 ly; 1 star, 2 planets: planet b • planet c) • 61 Cygni (11.40 ± 0.02 ly; 2 stars) • Epsilon Indi (11.81 ± 0.01 ly; 1 star, 2 brown dwarfs)

M V
(Red dwarf)

Ross 248 (10.31 ± 0.02 ly; 1 star) • Lacaille 9352 (10.69 ± 0.02 ly; 1 star) • Ross 128 (10.94 ± 0.05 ly; 1 star) • EZ Aquarii (11.27 ± 0.17 ly; 3 stars) • Struve 2398 (11.49 ± 0.06 ly; 2 stars) • Groombridge 34 (11.65 ± 0.03 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) • SCR 1845-6357 (12.57 ± 0.05 ly; 1 star, 1 brown dwarf) • Teegarden's star (12.57 ± 0.04 ly; 1 star) • Kapteyn's Star (12.76 ± 0.05 ly; 1 star) • Lacaille 8760 (12.87 ± 0.04 ly; 1 star) • Kruger 60 (13.15 ± 0.07 ly; 2 stars) • Ross 614 (13.34 ± 0.05 ly; 2 stars) • Wolf 1061 (13.92 ± 0.09 ly; 1 star) • Gliese 1 (14.16 ± 0.06 ly; 1 star) • Wolf 424 (14.31 ± 0.29 ly; 2 stars: Wolf 424 A • Wolf 424 B) • TZ Arietis (14.51 ± 0.19 ly; 1 star) • Gliese 687 (14.79 ± 0.06 ly; 1 star) • LHS 292 (14.81 ± 0.25 ly; 1 star)‡ • GJ 1245 (14.81 ± 0.07 ly; 3 stars) • Gliese 674 (14.82 ± 0.09 ly; 1 star, 1 planet: planet b)

White
Dwarf

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

Brown
Dwarf

M	DEN 1048-3956 (13.12 ± 0.06 ly; 1 brown dwarf)

T	UGPS 0722-05 (13.3 ± 2.0 ly; 1 brown dwarf)‡ • WISE 1741+2553 (17.9* + 3.3/- 3.1 ly; 1 brown dwarf)‡*

Y	WISE 1541-2250 (9.3* + 4.1/- 2.2 ly; 1 brown dwarf)‡* • WISE 2056+1459 (9.8* + 11.1/- 2.0 ly; 1 brown dwarf)‡* • WISE 1738+2732 (11.1 + 12.7/- 0 ly; 1 brown dwarf)‡ • WISE 1405+5534 (~12.4 ly; 1 brown dwarf)‡ • WISE 0410+1502 (23.2* + 5.2/- 12.7 ly; 1 brown dwarf)‡*

In left column are stellar classes of primary members of star systems. ‡Distance error margin extends out of declared distance interval. Bold are systems containing at least one component with absolute magnitude of +8.5 or brighter. Italic are systems possibly located within declared distance interval, but probably not.

Stars of Cygnus

Bayer	α (Deneb) β (Albireo) γ (Sadr) δ (Rukh) ε (Gienah) ζ η θ ι¹ ι² κ λ μ ν ξ ο¹ ο² π¹ (Azelfafage) π² (Pennae Caudalis) ρ σ τ υ φ χ ψ ω¹ ω² b¹ b² b³ c d e f¹ f² g A P

Flamsteed	1 (κ) 2 4 6 (β, Albireo) 7 (ι¹) 8 9 10 (ι²) 11 12 (φ) 13 (θ) 14 15 16 (c) 17 18 (δ, Rukh) 19 20 (d) 21 (η) 22 23 24 (ψ) 25 26 (e) 27 (b¹) 28 (b²) 29 (b³) 30 31 (ο¹) 32 (ο²) 33 34 (P) 35 36 37 (γ, Sadr) 39 40 41 42 43 44 45 (ω¹) 46 (ω²) 47 48 49 50 (α, Deneb) 51 52 53 (ε, Gienah) 54 (λ) 55 56 57 58 (ν) 59 (f¹) 60 61 62 (ξ) 63 (f²) 64 (ζ) 65 (τ) 66 (υ) 67 (σ) 68 (A) 69 70 71 (g) 72 73 (ρ) 74 75 76 77 78 (μ) 79 80 (π¹, Azelfafage) 81 (π², Pennae Caudalis)

Nearby	61 GJ 1245

Other	Cygnus X-1 Cygnus OB2-12 Kepler-11 Kepler-22 KY Cygni WR 136

List