19 Aquarii, a white main-sequence star in Aquarius
19 Aquarii is a white main-sequence star in the constellation Aquarius. At 298 light years away, it shines at an apparent visual magnitude of 5.71.
19 Aquarii (HIP 105761)
19 Aquarii is a white main-sequence star in the constellation Aquarius. At 298 light years away, it shines at an apparent visual magnitude of 5.71. It is moving through the Galaxy at a speed of 75.4 km/s relative to the Sun. Its projected Galactic orbit carries it between 8,500 and 24,300 light years from the center of the Galaxy.
Sky position: RA 21h 25.2m, Dec -9° 45'
Common designations: 19 Aquarii, HIP 105761, HD 203875, HR 8195
Galactic Orbit of
19 Aquarii
(compared to the
Sun)
E
ccentricity: 48.2% vs. 16.0%Angle φ : 170.1°vs. 26.0°
Semi-major axis : 5,028 pc vs. 8,686 pc
Semi-minor axis: 4,406 pc vs. 8,574 pc
Focus-to-center
: 2,422 pcvs. 1,388 pcSemilatus rectum : 3,862 pc vs. 8,464 pc
Perigalacticon: 2,606 pc vs. 7,297 pc
Apogalacticon
: 7,450 pcvs. 10,074 pcSome Tabulated XHIP Data for 19 Aquarii
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 321.30423818° ±1.01 mas | 16.00 ±0.70 mas/yr. |
| Declination: | -9.74813997° ±0.39 mas | -166.60 ±0.80 mas/yr. |
| Galactic Longitude: | 42.39990332° | -141.12 mas/yr. |
| Galactic Latitude: | -38.50443460° | -89.98 mas/yr. |
Parallax: 10.89 ± 0.63 mas
Spectrography
Spectral Type: A8 V 1999MSS...C05....0H.
Radial Velocity: -20.60 ±1.80 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
5.92
1.11
V
5.71
0.90
R
I
5.51
0.70
J
5.33
0.52
H
5.29
0.48
K
5.19
0.39
B-V: +0.21 V-I: +0.20
Derivations
Heliocentric distance: 91.46 pc (5.8% margin of error)
Galactocentric distance: 7,348 pc
Transverse velocity: 72.6 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 52.9 pc | 48.3 pc | -56.9 pc |
| Velocity (U, V, W) | 11.4 km/s | -72.4 km/s | -17.7 km/s |