1 Puppis (HIP 37648)

1 Puppis is a red giant star in the constellation Puppis. At 770 light years away, it shines at an apparent visual magnitude of 4.63. 1 Puppis is the primary component of a multiple-star system. It is moving through the Galaxy at a speed of 49.1 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,300 and 29,600 light years from the center of the Galaxy. It came closest to the Sun 3.1 million years ago when it had brightened to magnitude 4.01 from a distance of 579 light years.

Sky position: RA 7h 43.5m, Dec -28° 24.6'

Common designations: 1 Puppis, HIP 37648, HD 62576

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Stars of the Northern Hemisphere
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Brightest stars in Puppis:
(list all)

18

|    4.42

)   h2 Puppis

19

|    4.44

)   Gliese 279

20

|    4.44

)   h1 Puppis

21

|    4.44

)   q Puppis

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

32

|    4.69

)   m Puppis

33

|    4.69

)   Q Puppis

34

|    4.72

)   19 Puppis

Location of 1 Puppis circled
Map detail from Stars of the Northern Hemisphere
Hover over other bright stars to identify or click to jump.

Galactic Orbit of 1 Puppis
(compared to the Sun)

Eccentricity: 14.0% vs. 16.0%

Angle φ : -73.9° vs. 26.0°

Semi-major axis : 7,954 pc vs. 8,686 pc

Semi-minor axis: 7,876 pc vs. 8,574 pc

Focus-to-center: 1,112 pc vs. 1,388 pc

Semilatus rectum : 7,799 pc vs. 8,464 pc

Perigalacticon: 6,842 pc vs. 7,297 pc

Apogalacticon: 9,067 pc vs. 10,074 pc
 
Some Tabulated XHIP Data for 1 Puppis
(see also: SIMBAD)

Astrometry
 2007A&A...474..653V
  Position Proper Motion
Right Ascension: 115.88498202° ±0.12 mas -13.73 ±0.15 mas/yr.
Declination: -28.41095715° ±0.17 mas 30.01 ±0.21 mas/yr.
     
Galactic Longitude: 243.88030649° -32.87 mas/yr.
Galactic Latitude: -2.32245675° 3.00 mas/yr.

Parallax: 4.22 ± 0.23 mas

Spectrography

Spectral Type: M1III 2008ApJS..176..216A.

Radial Velocity: 32.40 ±0.30 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 


Photometry
 
band magnitude Abs. Mag.
U
B 6.26 -0.60
V 4.63 -2.24
R
I 3.05 -3.82
J 1.77 -5.09
H 1.00 -5.87
K 0.78 -6.08

  B-V: +1.63       V-I: +1.58

Derivations

Heliocentric distance: 236.13 pc (5.5% margin of error)

Galactocentric distance: 7,507 pc

Transverse velocity: 36.9 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) -103.9 pc -211.8 pc -9.6 pc
Velocity (U, V, W) -47.3 km/s -13.0 km/s 2.0 km/s

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