chi Puppis (HIP 38901)

chi Puppis is a white bright giant star in the constellation Puppis. At 1,202 light years away, it shines at an apparent visual magnitude of 4.76. It is moving through the Galaxy at a speed of 35.2 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,800 and 24,800 light years from the center of the Galaxy. It came closest to the Sun 8.7 million years ago when it had brightened to magnitude 3.36 from a distance of 631 light years.

Sky position: RA 7h 57.7m, Dec -30 19.8'

Common designations: Chi Puppis, HIP 38901, HD 65456, HR 3113

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Brightest stars in Puppis:
(list all)

28

|    4.63

)   HR 3089

29

|    4.65

)   v1 Puppis

30

|    4.65

)   HR 2881

31

|    4.65

)   HR 2922

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

39

|    4.82

)   HD 60414

40

|    4.83

)   A Puppis

41

|    4.83

)   w Puppis

42

|    4.84

)   d1 Puppis

43

|    4.85

)   HD 59612

44

|    4.87

)   L1 Puppis

Location of chi Puppis circled
Map detail from Stars of the Northern Hemisphere
Hover over other bright stars to identify or click to jump.


Galactic Orbit of chi Puppis

(compared to the Sun)

Eccentricity: 4.2% vs. 16.0%

Angle φ : -146.3 vs. 26.0

Semi-major axis : 7,300 pc vs. 8,686 pc

Semi-minor axis: 7,294 pc vs. 8,574 pc

Focus-to-center: 306 pc vs. 1,388 pc

Semilatus rectum : 7,287 pc vs. 8,464 pc

Perigalacticon: 6,994 pc vs. 7,297 pc

Apogalacticon: 7,606 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for chi Puppis
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 119.41713223 0.13 mas -7.91 0.17 mas/yr.
Declination: -30.33458694 0.16 mas 7.02 0.19 mas/yr.
     
Galactic Longitude: 247.10392515 -10.11 mas/yr.
Galactic Latitude: -0.65257520 -3.08 mas/yr.

Parallax: 2.69 0.22 mas


Spectrography

Spectral Type: A5II 2001AJ....121.2148G.

Radial Velocity: 30.00 0.50 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 



Photometry
 
band magnitude Abs. Mag.
U
B 4.91 -2.92
V 4.76 -3.07
R
I 4.56 -3.27
J 4.71 -3.13
H 4.48 -3.35
K 4.22 -3.62

  B-V: +0.15       V-I: +0.20


Derivations

Heliocentric distance: 368.79 pc (8.2% margin of error)

Galactocentric distance: 7,551 pc

Transverse velocity: 18.5 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) -143.5 pc -339.7 pc -4.2 pc
Velocity (U, V, W) -27.9 km/s -20.7 km/s -5.7 km/s

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