3 Boötis, a white subgiant star in Boötes
3 Boötis is a white subgiant star in the constellation Boötes. At 292 light years away, it shines at an apparent visual magnitude of 5.97.
3 Boötis (HIP 67239)
3 Boötis is a white subgiant star in the constellation Boötes. At 292 light years away, it shines at an apparent visual magnitude of 5.97. The star's age is estimated to be 1.2 billion years but is certainly no less than 1.1 billion years and no greater than 1.3 billion years. The iron abundance of 3 Boötis is +0.15 (141.3% of the Sun). It is moving through the Galaxy at a speed of 28.7 km/s relative to the Sun. Its projected Galactic orbit carries it between 19,700 and 25,900 light years from the center of the Galaxy.
Sky position: RA 13h 46.7m, Dec +25° 42'
Common designations: 3 Boötis, HIP 67239, HD 120064, HR 5182
Exoplanets
Calendar+Book Bundle
Explore worlds
beyond the Solar System
one month at a time!
Galactic Orbit of
3 Boötis
(compared to the
Sun)
E
ccentricity: 13.6% vs. 16.0%Angle φ : 122.0°vs. 26.0°
Semi-major axis : 6,981 pc vs. 8,686 pc
Semi-minor axis: 6,916 pc vs. 8,574 pc
Focus-to-center
: 950 pcvs. 1,388 pcSemilatus rectum : 6,851 pc vs. 8,464 pc
Perigalacticon: 6,030 pc vs. 7,297 pc
Apogalacticon
: 7,931 pcvs. 10,074 pcSome Tabulated XHIP Data for 3 Boötis
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 206.68056232° ±0.31 mas | -18.48 ±0.34 mas/yr. |
| Declination: | 25.70238084° ±0.22 mas | -58.81 ±0.23 mas/yr. |
| Galactic Longitude: | 29.47915053° | -61.07 mas/yr. |
| Galactic Latitude: | 77.54656302° | 8.38 mas/yr. |
Parallax: 11.15 ± 0.40 mas
Spectrography
Spectral Type: F6 IV-V 1967PASP...79..102A.
Radial Velocity:
11.90 ±0.90 km/s [D rating]
2006AstL...32..759G.
This star is a spectroscopic binary with an unsolved orbit.
Iron Abundance [Fe/H]:
0.15 ±0.05 dex
2011A&A...530A.138C, 2007ApJS..169..430R.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 6.49 | 1.73 |
| V | 5.97 | 1.21 |
| R | ||
| I | 5.42 | 0.66 |
| J | 5.14 | 0.38 |
| H | 4.73 | -0.03 |
| K | 4.63 | -0.13 |
B-V: +0.52 V-I: +0.55
Derivations
Heliocentric distance: 89.55 pc (3.6% margin of error)
Galactocentric distance: 7,384 pc
Transverse velocity: 26.2 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 16.8 pc | 9.5 pc | 87.4 pc |
| Velocity (U, V, W) | 12.0 km/s | -23.0 km/s | 12.4 km/s |