Grafias, an orange giant star in Scorpius
Grafias is an orange giant star in the constellation Scorpius. At 132 light years away, it is the 336th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.62.
Grafias (HIP 82729)
Grafias is an orange giant star in the constellation Scorpius. At 132 light years away, it is the 336th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.62. The iron abundance of Grafias is +0.02 (104.7% of the Sun). It is moving through the Galaxy at a speed of 53.2 km/s relative to the Sun. Its projected Galactic orbit carries it between 14,500 and 24,300 light years from the center of the Galaxy.
Sky position: RA 16h 54.6m, Dec -42° 21.6'
Common designations: Grafias, Zeta-2 Scorpii, HIP 82729, HD 152334, HR 6271
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Brightest stars in Scorpius:
(list all)
| Rank | Mag. | Star |
| 8 | 2.70 | Lesath |
| 9 | 2.82 | Alniyat |
| 10 | 2.89 | Pi Scorpii |
| 11 | 2.90 | Alniyat |
| 12 | 2.99 | Iota-1 Scorpii |
| 13 | 3.00 | Mu-1 Scorpii |
| 14 | 3.19 | G Scorpii |
| 15 | 3.32 | Eta Scorpii |
| 16 | 3.56 | Mu-2 Scorpii |
17
| 3.62
) Grafias
| Rank | Mag. | Star |
| 18 | 3.87 | Rho Scorpii |
| 19 | 3.93 | Omega-1 Scorpii |
| 20 | 4.00 | Jabbah |
| 21 | 4.18 | H Scorpii |
| 22 | 4.24 | N Scorpii |
| 23 | 4.26 | Q Scorpii |
| 24 | 4.31 | Omega-2 Scorpii |
Hover over other bright stars to identify or click to jump.
Galactic Orbit of Grafias
(compared to the Sun)
E
ccentricity: 25.5% vs. 16.0%Angle φ : -163.2°vs. 26.0°
Semi-major axis : 5,952 pc vs. 8,686 pc
Semi-minor axis: 5,756 pc vs. 8,574 pc
Focus-to-center
: 1,517 pcvs. 1,388 pcSemilatus rectum : 5,566 pc vs. 8,464 pc
Perigalacticon: 4,436 pc vs. 7,297 pc
Apogalacticon
: 7,469 pcvs. 10,074 pcSome Tabulated XHIP Data for Grafias
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 253.64627156° ±0.23 mas | -124.20 ±0.90 mas/yr. |
| Declination: | -42.36075919° ±0.19 mas | -227.50 ±0.90 mas/yr. |
| Galactic Longitude: | 343.09718719° | -254.94 mas/yr. |
| Galactic Latitude: | 0.78623194° | -46.76 mas/yr. |
Parallax: 24.65 ± 0.27 mas
Spectrography
Spectral Type: K3 III 1978MSS...C02....0H.
Radial Velocity: -18.70 ±0.70 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
0.02 dex
2006A&A...458..609D.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 5.01 | 1.97 |
| V | 3.62 | 0.58 |
| R | ||
| I | 2.40 | -0.64 |
| J | 1.36 | -1.68 |
| H | 0.63 | -2.41 |
| K | 0.43 | -2.61 |
B-V: +1.39 V-I: +1.22
Derivations
Heliocentric distance: 40.56 pc (1.1% margin of error)
Galactocentric distance: 7,361 pc
Transverse velocity: 49.8 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 38.8 pc | -11.8 pc | 0.6 pc |
| Velocity (U, V, W) | -32.0 km/s | -41.5 km/s | -9.2 km/s |