HR 5256, an orange dwarf star in Ursa Major
HR 5256 is an orange dwarf star in the constellation Ursa Major. At 33 light years away, it shines at an apparent visual magnitude of 6.49.
HR 5256 (HIP 68184)
HR 5256 is an orange dwarf star in the constellation Ursa Major. At 33 light years away, it shines at an apparent visual magnitude of 6.49. The iron abundance of HR 5256 is +0.14 (138.0% of the Sun). It is moving through the Galaxy at a speed of 28.5 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,600 and 27,400 light years from the center of the Galaxy. It will come closest to the Sun 322,000 years from now when it will brighten to magnitude 4.31 from a distance of 12.0 light years.
Sky position: RA 13h 57.5m, Dec +61° 29.4'
Common designations: HIP 68184, HD 122064, HR 5256
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Galactic Orbit of
HR 5256
(compared to the
Sun)
E
ccentricity: 7.5% vs. 16.0%Angle φ : 46.1°vs. 26.0°
Semi-major axis : 7,829 pc vs. 8,686 pc
Semi-minor axis: 7,807 pc vs. 8,574 pc
Focus-to-center
: 585 pcvs. 1,388 pcSemilatus rectum : 7,785 pc vs. 8,464 pc
Perigalacticon: 7,244 pc vs. 7,297 pc
Apogalacticon
: 8,414 pcvs. 10,074 pcSome Tabulated XHIP Data for HR 5256
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 209.38373772° ±0.25 mas | -32.31 ±0.28 mas/yr. |
| Declination: | 61.49233524° ±0.30 mas | 216.52 ±0.29 mas/yr. |
| Galactic Longitude: | 109.61370096° | 122.18 mas/yr. |
| Galactic Latitude: | 53.89361415° | -181.65 mas/yr. |
Parallax: 99.36 ± 0.32 mas
Spectrography
Spectral Type: K3V 1993BICDS..43....5T : S.
Radial Velocity: -26.47 ±0.10 km/s [A rating] 2002ApJS..141..503N, 2005ApJS..159..141V.
Iron Abundance [Fe/H]:
0.14 ±0.01 dex
2008A&A...480...91S, 2007A&A...465..271R, 2006AJ....131.3069L, 2006A&A...454..833K, 2005ApJS..159..141V, 2005AJ....129.1063L, 2004A&A...420..183A, 2004A&A...418..551M.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 7.53 | 7.52 |
| V | 6.49 | 6.48 |
| R | 5.90 | 5.89 |
| I | 5.40 | 5.39 |
| J | 5.02 | 5.00 |
| H | 4.40 | 4.39 |
| K | 4.09 | 4.08 |
B-V: +1.04 V-I: +1.09
Derivations
Heliocentric distance: 10.06 pc (0.3% margin of error)
Galactocentric distance: 7,402 pc
Transverse velocity: 10.4 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -2.0 pc | 5.6 pc | 8.1 pc |
| Velocity (U, V, W) | -2.6 km/s | -10.1 km/s | -26.5 km/s |