HD 31093, a white main-sequence star in Caelum
HD 31093 is a white main-sequence star in the constellation Caelum. At 268 light years away, it shines at an apparent visual magnitude of 5.82.
HD 31093 (HIP 22573)
HD 31093 is a white main-sequence star in the constellation Caelum. At 268 light years away, it shines at an apparent visual magnitude of 5.82. HD 31093 is a multiple-star system. It is moving through the Galaxy at a speed of 27.4 km/s relative to the Sun. Its projected Galactic orbit carries it between 19,600 and 24,500 light years from the center of the Galaxy. It came closest to the Sun 2.6 million years ago when it had brightened to magnitude 4.24 from a distance of 129 light years.
Sky position: RA 4h 51.5m, Dec -34° 54.6'
Common designations: HIP 22573, HD 31093
Splendors of the Universe
Magnificent Monthly Calendar
Galactic Orbit of
HD 31093
(compared to the
Sun)
E
ccentricity: 11.1% vs. 16.0%Angle φ : 154.5°vs. 26.0°
Semi-major axis : 6,772 pc vs. 8,686 pc
Semi-minor axis: 6,730 pc vs. 8,574 pc
Focus-to-center
: 754 pcvs. 1,388 pcSemilatus rectum : 6,688 pc vs. 8,464 pc
Perigalacticon: 6,018 pc vs. 7,297 pc
Apogalacticon
: 7,526 pcvs. 10,074 pcSome Tabulated XHIP Data for HD 31093
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 72.86749471° ±0.27 mas | 26.10 ±0.90 mas/yr. |
| Declination: | -34.90623212° ±0.37 mas | -22.00 ±1.00 mas/yr. |
| Galactic Longitude: | 237.34252445° | 25.74 mas/yr. |
| Galactic Latitude: | -38.73920282° | 22.43 mas/yr. |
Parallax: 12.17 ± 0.41 mas
Spectrography
Spectral Type: A2V 1995ApJS...99..135A.
Radial Velocity: 24.00 ±1.80 km/s [B rating] 2007AN....328..889K.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
5.93
1.35
V
5.82
1.25
R
I
5.72
1.15
J
5.60
1.03
H
5.55
0.98
K
5.52
0.95
B-V: +0.11 V-I: +0.10
Derivations
Heliocentric distance: 82.06 pc (3.4% margin of error)
Galactocentric distance: 7,435 pc
Transverse velocity: 13.3 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -34.5 pc | -53.9 pc | -51.3 pc |
| Velocity (U, V, W) | -4.6 km/s | -25.8 km/s | -8.2 km/s |