Gliese 179

Gliese 179
Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Orion
Right ascension	04^h 52^m 05.73^s^[1]
Declination	+06° 28′ 35.5″^[1]
Apparent magnitude (V)	11.96
Characteristics
Spectral type	M4V
Apparent magnitude (U)	14.791
Apparent magnitude (B)	13.56
Apparent magnitude (R)	10.854
Apparent magnitude (I)	9.334
Apparent magnitude (J)	7.814
Apparent magnitude (H)	7.209
Apparent magnitude (K)	6.942
U−B color index	1.23
B−V color index	1.60
V−R color index	1.11
R−I color index	1.520
Variable type	none
Astrometry

Radial velocity (R_v)	–9.1 km/s
Proper motion (μ)	RA: 142.98 ± 4.06^[1] mas/yr Dec.: -309.39 ± 2.38^[1] mas/yr
Parallax (π)	81.38 ± 4.04^[1]mas
Distance	40 ± 2 ly (12.3 ± 0.6 pc)
Absolute magnitude (M_V)	11.54

Details

Mass	0.357 M_☉
Radius	0.38 R_☉
Luminosity	0.016 L_☉
Surface gravity (log g)	4.83
Temperature	3,424 ± 16^[2]K
Metallicity [Fe/H]	+0.23 ± 0.17^[2]dex

Other designations
G 83-37, G 84-15, G 82-52, HIP 22627, LTT 11525, NLTT 14088, Ross 401, Wolf 1539
Database references
SIMBAD	data
Exoplanet Archive	data
ARICNS	data
Extrasolar Planets Encyclopaedia	data

Gliese 179 is a 12th magnitude M-type main sequence star located approximately 40 light years away in the constellation Orion. This star is smaller, cooler, fainter, and less massive than our Sun. Also its metal content is twice as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.

The Gliese 179 system^[3]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥0.82 ± 0.07 M_J	2.41 ± 0.04	2288 ± 59	0.21 ± 0.08	—	—

References

^ ^a ^b ^c ^d ^e 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
^ ^a ^b Rojas-Ayala, Bárbara et al. (April 2012). "Metallicity and Temperature Indicators in M Dwarf K-band Spectra: Testing New and Updated Calibrations with Observations of 133 Solar Neighborhood M Dwarfs". The Astrophysical Journal 748 (2): 93. arXiv:1112.4567. Bibcode:2012ApJ...748...93R. doi:10.1088/0004-637X/748/2/93.
^ Howard, Andrew W. et al. (2010). "The California Planet Survey. I. Four New Giant Exoplanets". The Astrophysical Journal 721 (2): 1467–1481. arXiv:1003.3488. Bibcode:2010ApJ...721.1467H. doi:10.1088/0004-637X/721/2/1467.

Coordinates: 04^h 52^m 05.7273^s, +06° 28′ 35.542″

← Star systems within 40–45 light-years →

Star systems (including brown dwarf systems) within 40–45 light-years from Earth.

Giant star

G III	Capella (42.2 ± 0.5 ly; 4 stars)

F
(Yellow-white)

IV	Beta Trianguli Australis (40.2 ± 0.3 ly; 2 stars) Theta Ursae Majoris «Alhaud» (44.0 ± 0.4 ly; 3 stars)

V	36 Ursae Majoris (41.9 ± 0.4 ly; 2 stars) Upsilon Andromedae (43.9 ± 0.4 ly; 2 stars, 4 planets: b c d e) 10 Tauri (44.8 ± 0.5 ly; 2 stars) Iota Piscium (45.0 ± 0.5 ly; 1 star)

G
(Yellow)

IV	Beta Aquilae «Alshain» (44.7 ± 0.5 ly; 2 stars)

V	Rho¹ (55) Cancri (40.9 ± 0.4 ly; 2 stars, 5 planets: e b c f d) HR 483 (41.2 ± 0.4 ly; 2 stars) Lambda Aurigae «Al Hurr» (41.2 ± 0.5 ly; 2 stars) HR 683 (41.4 ± 0.4 ly; 1 star) i (44) Boötis (41.6 ± 0.3 ly; 3 stars) HR 6094 (42.0 ± 0.5 ly; 2 stars, 1 planet: b) HR 6998 (42.4 ± 0.5 ly; 1 star) 58 Eridani (43.4 ± 0.5 ly; 1 star) HR 8501 (44.4 ± 0.4 ly; 2 stars)

K
(Orange)

IV	HR 4587 (42.1 ± 0.4 ly; 1 star) Gamma Cephei «Errai» (45.0 ± 0.3 ly; 2 stars, 1 planet: b)

V	Gliese 435 (40.8 ± 0.5 ly; 1 star) HR 3259 (41.0 ± 0.4 ly; 1 star, 3 planets: b c d) Gliese 349 (41.4 ± 0.6 ly; 1 star) HR 6518 (41.7 ± 0.3 ly; 1 star) HD 40307 (41.8 ± 0.3 ly; 1 star, 6 planets: b c d e f g) Gliese 428 (42.0 ± 1.0 ly; 2 stars) Gliese 707 (42.3 ± 0.7 ly; 1 star) Gliese 204 (42.3 ± 0.5 ly; 1 star) Gliese 167 (42.7 ± 0.3 ly; 1 star) Gliese 775 (42.8 ± 0.6 ly; 1 star) Gliese 425 (42.9 ± 1.0 ly; 2 stars) Gliese 716 (43.1 ± 0.5 ly; 1 star) Gliese 146 (43.6 ± 0.5 ly; 1 star) Gliese 556 (43.8 ± 0.4 ly; 1 star) Gliese 69 (43.8 ± 0.7 ly; 1 star) Gliese 174 (44.0 ± 0.8 ly; 1 star) Gliese 868 (44.2 ± 0.7 ly; 1 star) Gliese 528 (44.4 ± 0.7 ly; 2 stars) Gliese 656 (44.6 ± 0.6 ly; 1 star) Gliese 5 (44.7 ± 0.5 ly; 2 stars) Gliese 615 (44.8 ± 0.5 ly; 1 star)

M V (Red dwarf)	Gliese 179 (40.1+2.1 −1.9 ly; 1 star, 1 planet: b) Gliese 806 (40.2 ± 0.9 ly; 1 star) Gliese 521 (42.4 ± 0.9 ly; 1 star)

White
dwarf

DA	ZZ Piscium (44.4+2.6 −2.3 ly; 1 star)

DC	Gliese 742 (42.4+1.3 −1.2 ly; 1 star)

Brown
dwarf

WISE 1051-2138 (~40.8 ly; 1 brown dwarf)
ULAS J0034-00 (41.0+2.1
−1.9 ly; 1 brown dwarf)
WISE 1542+2230 (~41.1 ly; 1 brown dwarf)
WISE 0857+5604 (~42.1 ly; 1 brown dwarf)
WISE 2019-1148 (~42.4 ly; 1 brown dwarf)
WISE 2134-7137 (~42.7 ly; 1 brown dwarf)
WISE 2359-7335 (~42.7 ly; 1 brown dwarf)
WISE 1311+0122 (~44.4 ly; 1 brown dwarf)
WISE 1952+7240 (~44.4 ly; 1 brown dwarf)
WISE 0513+0608 (~44.7 ly; 1 brown dwarf)
WISE 2255-3118 (~44.7 ly; 1 brown dwarf)
WISE 2226+0440 (~45.0 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.

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Last modified on 14 April 2013, at 19:07

Gliese 179

See also

References

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