HD 181327, a white main-sequence star in Telescopium
HD 181327 is a white main-sequence star in the constellation Telescopium. At 169 light years away, it shines at an apparent visual magnitude of 7.04.
HD 181327 (HIP 95270)
HD 181327 is a white main-sequence star in the constellation Telescopium. At 169 light years away, it shines at an apparent visual magnitude of 7.04. The star's age is estimated to be 1.4 billion years but is certainly no less than 700 million years and no greater than 2 billion years. The iron abundance of HD 181327 is +0.04 (109.6% of the Sun). It is moving through the Galaxy at a speed of 20.9 km/s relative to the Sun and is part of the Beta Pictoris moving group. Its projected Galactic orbit carries it between 22,600 and 24,200 light years from the center of the Galaxy. HD 181327 has no confirmed planets known to date (July 2013), but does have a circumstellar debris disk.
Sky position: RA 19h 23.0m, Dec -54° 32.4'
Common designations: HIP 95270, HD 181327
Moon Calendar Poster
Outstanding Lunar Images
Galactic Orbit of
HD 181327
(compared to the
Sun)
E
ccentricity: 3.4% vs. 16.0%Angle φ : 139.4°vs. 26.0°
Semi-major axis : 7,174 pc vs. 8,686 pc
Semi-minor axis: 7,170 pc vs. 8,574 pc
Focus-to-center
: 244 pcvs. 1,388 pcSemilatus rectum : 7,166 pc vs. 8,464 pc
Perigalacticon: 6,930 pc vs. 7,297 pc
Apogalacticon
: 7,418 pcvs. 10,074 pcSome Tabulated XHIP Data for HD 181327
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 290.74549533° ±0.53 mas | 24.01 ±0.59 mas/yr. |
| Declination: | -54.53784903° ±0.47 mas | -81.92 ±0.42 mas/yr. |
| Galactic Longitude: | 342.77904783° | -76.10 mas/yr. |
| Galactic Latitude: | -26.24699075° | -38.68 mas/yr. |
Parallax: 19.30 ± 0.65 mas
Spectrography
Spectral Type: F6V 2006A&A...460..695T.
Radial Velocity: 0.10 ±0.40 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
0.04 ±0.08 dex
2011A&A...530A.138C.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 7.52 | 3.95 |
| V | 7.04 | 3.47 |
| R | ||
| I | 6.55 | 2.98 |
| J | 6.20 | 2.63 |
| H | 5.98 | 2.41 |
| K | 5.91 | 2.34 |
B-V: +0.48 V-I: +0.49
Derivations
Heliocentric distance: 51.74 pc (3.4% margin of error)
Galactocentric distance: 7,356 pc
Transverse velocity: 20.9 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 44.3 pc | -13.7 pc | -22.9 pc |
| Velocity (U, V, W) | -9.4 km/s | -16.6 km/s | -8.6 km/s |