50 Cassiopeiae, a white main-sequence star in Cassiopeia
50 Cassiopeiae is a white main-sequence star in the constellation Cassiopeia. At 157 light years away, it is the 490th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.95.
50 Cassiopeiae (HIP 9598)
50 Cassiopeiae is a white main-sequence star in the constellation Cassiopeia. At 157 light years away, it is the 490th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.95. It is moving through the Galaxy at a speed of 21.4 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,100 and 31,600 light years from the center of the Galaxy. It will come closest to the Sun 1.9 million years from now when it will brighten to magnitude 2.54 from a distance of 82 light years.
Sky position: RA 2h 3.4m, Dec +72° 25.2'
Common designations: 50 Cassiopeiae, HIP 9598, HD 12216
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Brightest stars in Cassiopeia:
(list all)
| Rank | Mag. | Star |
| 1 | 2.15 | Gamma Cassiopeiae |
| 2 | 2.24 | Schedar |
| 3 | 2.28 | Caph |
| 4 | 2.66 | Ruchbah |
| 5 | 3.35 | Segin |
| 6 | 3.46 | Eta Cassiopeia |
| 7 | 3.69 | Zeta Cassiopeiae |
8
| 3.95
) 50 Cassiopeiae
| Rank | Mag. | Star |
| 9 | 4.17 | Kappa Cassiopeiae |
| 10 | 4.34 | Marfak |
| 11 | 4.46 | Iota Cassiopeiae |
| 12 | 4.48 | Omicron Cassiopeiae |
| 13 | 4.49 | A Cassiopeiae |
| 14 | 4.51 | Rho Cassiopeiae |
| 15 | 4.62 | Upsilon-2 Cassiopeiae |
| 16 | 4.68 | Chi Cassiopeiae |
| 17 | 4.72 | Psi Cassiopeiae |
Hover over other bright stars to identify or click to jump.
Galactic Orbit of 50 Cassiopeiae
(compared to the Sun)
E
ccentricity: 17.7% vs. 16.0%Angle φ : 65.2°vs. 26.0°
Semi-major axis : 8,242 pc vs. 8,686 pc
Semi-minor axis: 8,111 pc vs. 8,574 pc
Focus-to-center
: 1,462 pcvs. 1,388 pcSemilatus rectum : 7,982 pc vs. 8,464 pc
Perigalacticon: 6,779 pc vs. 7,297 pc
Apogalacticon
: 9,704 pcvs. 10,074 pcSome Tabulated XHIP Data for 50 Cassiopeiae
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 30.85912640° ±0.10 mas | -43.57 ±0.12 mas/yr. |
| Declination: | 72.42123962° ±0.11 mas | 22.30 ±0.14 mas/yr. |
| Galactic Longitude: | 128.37515175° | -48.07 mas/yr. |
| Galactic Latitude: | 10.31469286° | 9.23 mas/yr. |
Parallax: 20.76 ± 0.14 mas
Spectrography
Spectral Type: A1V 1995ApJS...99..135A.
Radial Velocity: -18.20 ±0.90 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
3.95
0.53
V
3.95
0.54
R
I
3.92
0.51
J
3.89
0.47
H
3.90
0.48
K
3.92
0.51
B-V: 0.00 V-I: +0.03
Derivations
Heliocentric distance: 48.17 pc (0.7% margin of error)
Galactocentric distance: 7,430 pc
Transverse velocity: 11.2 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -29.4 pc | 37.2 pc | 8.6 pc |
| Velocity (U, V, W) | 20.0 km/s | -7.5 km/s | -1.2 km/s |