d1 Puppis (HIP 37297)

d1 Puppis is a blue main-sequence star in the constellation Puppis. At 591 light years away, it shines at an apparent visual magnitude of 4.84. It is moving through the Galaxy at a speed of 34.8 km/s relative to the Sun and is part of the NGC 2451A moving group. Its projected Galactic orbit carries it between 22,900 and 25,000 light years from the center of the Galaxy. It came closest to the Sun 3.9 million years ago when it had brightened to magnitude 3.91 from a distance of 385 light years.

Sky position: RA 7h 39.5m, Dec -38 18.6'

Common designations: d-1 Puppis, HIP 37297, HD 61831, HR 2961

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Brightest stars in Puppis:
(list all)

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

45

|    4.92

)   H Puppis

46

|    4.94

)   HR 2608

47

|    4.98

)   140 Puppis

48

|    4.99

)   HR 2549

49

|    4.99

)   20 Puppis

Location of d1 Puppis circled
Map detail from Stars of the Northern Hemisphere
Hover over other bright stars to identify or click to jump.


Galactic Orbit of d1 Puppis

(compared to the Sun)

Eccentricity: 4.4% vs. 16.0%

Angle φ : -111.4 vs. 26.0

Semi-major axis : 7,351 pc vs. 8,686 pc

Semi-minor axis: 7,344 pc vs. 8,574 pc

Focus-to-center: 324 pc vs. 1,388 pc

Semilatus rectum : 7,337 pc vs. 8,464 pc

Perigalacticon: 7,027 pc vs. 7,297 pc

Apogalacticon: 7,675 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for d1 Puppis
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 114.86397513 0.12 mas -21.13 0.14 mas/yr.
Declination: -38.30806025 0.13 mas 15.78 0.14 mas/yr.
     
Galactic Longitude: 252.13784664 -23.95 mas/yr.
Galactic Latitude: -7.89787939 -11.04 mas/yr.

Parallax: 5.87 0.16 mas


Spectrography

Spectral Type: B3 V 1982MSS...C03....0H.

Radial Velocity: 26.40 2.80 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 



Photometry
 
band magnitude Abs. Mag.
U
B 4.65 -1.64
V 4.84 -1.45
R
I 4.98 -1.31
J 5.22 -1.07
H 5.33 -0.96
K 5.34 -0.95

  B-V: -0.19       V-I: -0.14


Derivations

Heliocentric distance: 181.38 pc (fitted to cluster)

Galactocentric distance: 7,457 pc

Transverse velocity: 22.7 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) -55.1 pc -171.0 pc -24.9 pc
Velocity (U, V, W) -27.2 km/s -17.3 km/s -13.0 km/s

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