Gliese 884, an orange dwarf star in Aquarius

Gliese 884 (HIP 113576)

Gliese 884 is an orange dwarf star in the constellation Aquarius. At 27 light years away, it shines at an apparent visual magnitude of 7.88. It is moving through the Galaxy at a speed of 38.9 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,500 and 54,800 light years from the center of the Galaxy.

Sky position: RA 23h 0.3m, Dec -22° 31.2'

Common designations: HIP 113576, HD 217357, Gliese 884, Lalande 44964

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Galactic Orbit of Gliese 884
(compared to the Sun)

E

ccentricity: 41.8% vs. 16.0%

Angle φ : 39.5°vs. 26.0°

Semi-major axis : 11,855 pc vs. 8,686 pc

Semi-minor axis: 10,770 pc vs. 8,574 pc

Focus-to-center

: 4,956 pcvs. 1,388 pc

Semilatus rectum : 9,784 pc vs. 8,464 pc

Perigalacticon: 6,900 pc vs. 7,297 pc

Apogalacticon

: 16,811 pcvs. 10,074 pc
  Some Tabulated XHIP Data for Gliese 884
(see also: SIMBAD)

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

Position	Proper Motion
Right Ascension:	345.06954991° ±0.71 mas	-902.36 ±0.81 mas/yr.
Declination:	-22.52448779° ±0.41 mas	57.65 ±0.52 mas/yr.
Galactic Longitude:	37.13964693°	-194.50 mas/yr.
Galactic Latitude:	-64.41630492°	883.03 mas/yr.

Parallax: 121.69 ± 0.69 mas

Spectrography

Spectral Type: K7+ V k 2006AJ....132..161G.

Radial Velocity: 16.42 ±0.10 km/s [A rating] 2002ApJS..141..503N.

Iron Abundance [Fe/H]: n/a

Photometry
 

band	magnitude	Abs. Mag.
U
B	9.26	9.69
V	7.88	8.31
R
I	6.44	6.86
J	5.35	5.77
H	4.70	5.12
K	4.48	4.90

B-V: +1.38 V-I: +1.44

Derivations

Heliocentric distance: 8.22 pc (0.6% margin of error)

Galactocentric distance: 7,397 pc

Transverse velocity: 35.2 km/s

3D heliocentric position and motion:

toward:	Galactic center	Galactic rotation	North Galactic Pole
Position ( X, Y, Z)	2.8 pc	2.1 pc	-7.4 pc
Velocity (U, V, W)	35.0 km/s	17.0 km/s	0.0 km/s