Gliese 675, an orange main-sequence star in Draco
Gliese 675 is an orange main-sequence star in the constellation Draco. At 42 light years away, it shines at an apparent visual magnitude of 6.44.
Gliese 675 (HIP 85235)
Gliese 675 is an orange main-sequence star in the constellation Draco. At 42 light years away, it shines at an apparent visual magnitude of 6.44. The star's age is unknown but is certainly no greater than 7.2 billion years. The iron abundance of Gliese 675 is -0.41 (38.9% of the Sun). It is moving through the Galaxy at a speed of 50.5 km/s relative to the Sun. Its projected Galactic orbit carries it between 12,700 and 24,300 light years from the center of the Galaxy. It will come closest to the Sun 191,000 years from now when it will brighten to magnitude 5.46 from a distance of 27 light years.
Sky position: RA 17h 25.0m, Dec +67° 18.6'
Common designations: HIP 85235, HD 158633, HR 6518, Gliese 675, Lalande 32047
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Galactic Orbit of
Gliese 675
(compared to the
Sun)
E
ccentricity: 31.3% vs. 16.0%Angle φ : 169.0°vs. 26.0°
Semi-major axis : 5,686 pc vs. 8,686 pc
Semi-minor axis: 5,401 pc vs. 8,574 pc
Focus-to-center
: 1,777 pcvs. 1,388 pcSemilatus rectum : 5,131 pc vs. 8,464 pc
Perigalacticon: 3,909 pc vs. 7,297 pc
Apogalacticon
: 7,463 pcvs. 10,074 pcSome Tabulated XHIP Data for Gliese 675
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 261.25375615° ±0.29 mas | -530.72 ±0.30 mas/yr. |
| Declination: | 67.30669594° ±0.30 mas | 4.63 ±0.36 mas/yr. |
| Galactic Longitude: | 97.55859714° | 84.74 mas/yr. |
| Galactic Latitude: | 33.16914748° | 523.93 mas/yr. |
Parallax: 78.11 ± 0.30 mas
Spectrography
Spectral Type: K0 V 1967AJ.....72.1334C.
Radial Velocity: -38.93 ±0.09 km/s [A rating] 1992A&A...256..121T, 2005ApJS..159..141V.
Iron Abundance [Fe/H]:
-0.41 ±0.01 dex
2011A&A...530A.138C, 2008A&A...480...91S, 2007A&A...465..271R, 2006AJ....131.3069L, 2006A&A...454..833K, 2005ApJS..161..444T, 2005ApJS..159..141V, 2005AJ....129.1063L, 2004AN....325....3F, 2004A&A...420..183A, 2004A&A...418..551M.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 7.20 | 6.66 |
| V | 6.44 | 5.90 |
| R | 5.90 | 5.36 |
| I | 5.60 | 5.06 |
| J | 4.97 | 4.43 |
| H | 4.64 | 4.10 |
| K | 4.52 | 3.98 |
B-V: +0.76 V-I: +0.84
Derivations
Heliocentric distance: 12.80 pc (0.4% margin of error)
Galactocentric distance: 7,401 pc
Transverse velocity: 32.2 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -1.4 pc | 10.6 pc | 7.0 pc |
| Velocity (U, V, W) | 1.5 km/s | -50.2 km/s | 5.3 km/s |