Gliese 180, a type M3 star in Eridanus

Gliese 180 (HIP 22762)

Gliese 180 is a type M3 star in the constellation Eridanus. At 39 light years away, it shines at an apparent visual magnitude of 10.90. It is moving through the Galaxy at a speed of 46.1 km/s relative to the Sun. Its projected Galactic orbit carries it between 17,000 and 27,700 light years from the center of the Galaxy.

Sky position: RA 4h 53.8m, Dec -17° 46.2'

Common designations: HIP 22762, Gliese 180

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Galactic Orbit of Gliese 180
(compared to the Sun)

E

ccentricity: 24.0% vs. 16.0%

Angle φ : 122.4°vs. 26.0°

Semi-major axis : 6,851 pc vs. 8,686 pc

Semi-minor axis: 6,650 pc vs. 8,574 pc

Focus-to-center

: 1,647 pcvs. 1,388 pc

Semilatus rectum : 6,455 pc vs. 8,464 pc

Perigalacticon: 5,204 pc vs. 7,297 pc

Apogalacticon

: 8,498 pcvs. 10,074 pc
  Some Tabulated XHIP Data for Gliese 180
(see also: SIMBAD)

Astrometry
2007A&A...474..653V

Position	Proper Motion
Right Ascension:	73.45720746° ±1.60 mas	406.94 ±1.94 mas/yr.
Declination:	-17.77185271° ±1.41 mas	-645.10 ±1.73 mas/yr.
Galactic Longitude:	216.96346134°	748.62 mas/yr.
Galactic Latitude:	-33.72845550°	146.02 mas/yr.

Parallax: 82.52 ± 2.40 mas

Spectrography

Spectral Type: M3: 1985ApJS...59..197B.

Radial Velocity: -14.55 ±0.24 km/s [A rating] 2011AAS...21743412C.

Iron Abundance [Fe/H]: n/a

Photometry
 

band	magnitude	Abs. Mag.
U	13.60	13.18
B	12.45	12.03
V	10.90	10.48
R	9.88	9.46
I	8.67	8.26
J	7.41	7.00
H	6.86	6.44
K	6.60	6.18

B-V: +1.55 V-I: +2.23

Derivations

Heliocentric distance: 12.11 pc (2.9% margin of error)

Galactocentric distance: 7,408 pc

Transverse velocity: 43.8 km/s

3D heliocentric position and motion:

toward:	Galactic center	Galactic rotation	North Galactic Pole
Position ( X, Y, Z)	-8.0 pc	-6.1 pc	-6.7 pc
Velocity (U, V, W)	31.8 km/s	-29.8 km/s	15.1 km/s