HR 2922, a blue subgiant star in Puppis
HR 2922 is a blue subgiant star in the constellation Puppis. At 224 light years away, it shines at an apparent visual magnitude of 4.65.
HR 2922 (HIP 36917)
HR 2922 is a blue subgiant star in the constellation Puppis. At 224 light years away, it shines at an apparent visual magnitude of 4.65. HR 2922 is the primary component of a multiple-star system. It is moving through the Galaxy at a speed of 20.4 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,000 and 33,400 light years from the center of the Galaxy.
Sky position: RA 7h 35.4m, Dec -28° 22.2'
Common designations: p Puppis, HIP 36917, HD 60863, HR 2922
Brightest stars in Puppis:
(list all)
| Rank | Mag. | Star |
| 22 | 4.47 | V Puppis |
| 23 | 4.49 | I Puppis |
| 24 | 4.49 | b Puppis |
| 25 | 4.53 | f Puppis |
| 26 | 4.61 | HR 3131 |
| 27 | 4.63 | 1 Puppis |
| 28 | 4.63 | HR 3089 |
| 29 | 4.65 | v1 Puppis |
| 30 | 4.65 | HR 2881 |
31
| 4.65
) HR 2922
| Rank | Mag. | Star |
| 32 | 4.69 | m Puppis |
| 33 | 4.69 | Q Puppis |
| 34 | 4.72 | 19 Puppis |
| 35 | 4.73 | HR 3226 |
| 36 | 4.75 | HR 2762 |
| 37 | 4.76 | chi Puppis |
| 38 | 4.78 | r Puppis |
Hover over other bright stars to identify or click to jump.
Galactic Orbit of HR 2922
(compared to the Sun)
E
ccentricity: 16.4% vs. 16.0%Angle φ : 19.1°vs. 26.0°
Semi-major axis : 8,817 pc vs. 8,686 pc
Semi-minor axis: 8,698 pc vs. 8,574 pc
Focus-to-center
: 1,443 pcvs. 1,388 pcSemilatus rectum : 8,581 pc vs. 8,464 pc
Perigalacticon: 7,374 pc vs. 7,297 pc
Apogalacticon
: 10,260 pcvs. 10,074 pcSome Tabulated XHIP Data for HR 2922
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 113.84557180° ±0.43 mas | -59.70 ±1.00 mas/yr. |
| Declination: | -28.36927798° ±0.52 mas | -16.20 ±1.10 mas/yr. |
| Galactic Longitude: | 242.96368638° | -14.64 mas/yr. |
| Galactic Latitude: | -3.86611312° | -60.10 mas/yr. |
Parallax: 14.50 ± 0.62 mas
Spectrography
Spectral Type: B7.5IV-Vn 1994AJ....107.1556G.
Radial Velocity: 3.30 ±7.40 km/s [B rating] 2007AN....328..889K.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
4.54
0.35
V
4.65
0.46
R
I
4.75
0.56
J
4.98
0.79
H
4.95
0.76
K
4.91
0.72
B-V: -0.11 V-I: -0.10
Derivations
Heliocentric distance: 68.81 pc (4.3% margin of error)
Galactocentric distance: 7,431 pc
Transverse velocity: 20.2 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -31.2 pc | -61.2 pc | -4.6 pc |
| Velocity (U, V, W) | -5.2 km/s | 0.4 km/s | -19.8 km/s |