Gliese 2, a type M1 star in Andromeda
Gliese 2 is a type M1 star in the constellation Andromeda. At 37 light years away, it shines at an apparent visual magnitude of 9.95.
Gliese 2 (HIP 428)
Gliese 2 is a type M1 star in the constellation Andromeda. At 37 light years away, it shines at an apparent visual magnitude of 9.95. Gliese 2 is a component of a multiple-star system. It is moving through the Galaxy at a speed of 48.1 km/s relative to the Sun.
Sky position: RA 0h 5.2m, Dec +45° 47.4'
Common designations: HIP 428, Gliese 2
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Galactic Orbit of
Gliese 2
(compared to the
Sun)
E
ccentricity: 14.1% vs. 16.0%Angle φ : -124.9°vs. 26.0°
Semi-major axis : 6,946 pc vs. 8,686 pc
Semi-minor axis: 6,877 pc vs. 8,574 pc
Focus-to-center
: 977 pcvs. 1,388 pcSemilatus rectum : 6,808 pc vs. 8,464 pc
Perigalacticon: 5,969 pc vs. 7,297 pc
Apogalacticon
: 7,922 pcvs. 10,074 pcSome Tabulated XHIP Data for Gliese 2
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 1.29233645° ±0.83 mas | 869.71 ±0.75 mas/yr. |
| Declination: | 45.78693438° ±0.80 mas | -150.99 ±0.73 mas/yr. |
| Galactic Longitude: | 114.55386138° | 826.46 mas/yr. |
| Galactic Latitude: | -16.33079787° | -310.09 mas/yr. |
Parallax: 86.98 ± 1.41 mas
Spectrography
Spectral Type: M1 1985ApJS...59..197B.
Radial Velocity: -0.39 ±0.09 km/s [A rating] 2002ApJS..141..503N, 1992A&A...256..121T.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
11.42
11.12
V
9.95
9.65
R
9.20
8.90
I
8.50
8.20
J
6.70
6.40
H
6.10
5.80
K
5.85
5.55
B-V: +1.47 V-I: +1.45
Derivations
Heliocentric distance: 11.49 pc (1.6% margin of error)
Galactocentric distance: 7,405 pc
Transverse velocity: 48.1 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -4.6 pc | 10.0 pc | -3.2 pc |
| Velocity (U, V, W) | -38.8 km/s | -23.4 km/s | -16.1 km/s |