Lambda Pyxidis (HIP 46026)

Lambda Pyxidis is a yellow giant star in the constellation Pyxis. At 192 light years away, it shines at an apparent visual magnitude of 4.71. The iron abundance of Lambda Pyxidis is -0.09 (81.3% of the Sun). It is moving through the Galaxy at a speed of 36 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,400 and 28,100 light years from the center of the Galaxy.

Sky position: RA 9h 23.2m, Dec -28° 49.8'

Common designations: Lambda Pyxidis, HIP 46026, HD 81169

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

1

|    3.68

)   Alpha Pyxidis

2

|    3.97

)   Beta Pyxidis

3

|    4.02

)   Gamma Pyxidis

4

|    4.62

)   Kappa Pyxidis

5

|    4.71

)   Theta Pyxidis

6

|    4.71

)   Lambda Pyxidis

7

|    4.86

)   Zeta Pyxidis

8

|    4.87

)   Delta Pyxidis

9

|    5.05

)   HD 73752

10

|    5.19

)   HR 3512

11

|    5.24

)   Eta Pyxidis

12

|    5.42

)   HD 72310

13

|    5.59

)   Epsilon Pyxidis

14

|    5.61

)   HR 3362

15

|    5.74

)   HR 3479

16

|    5.75

)   HD 71801

17

|    5.86

)   HR 3513

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

Galactic Orbit of Lambda Pyxidis
(compared to the Sun)

Eccentricity: 9.1% vs. 16.0%

Angle φ : -50.5° vs. 26.0°

Semi-major axis : 7,907 pc vs. 8,686 pc

Semi-minor axis: 7,874 pc vs. 8,574 pc

Focus-to-center: 719 pc vs. 1,388 pc

Semilatus rectum : 7,841 pc vs. 8,464 pc

Perigalacticon: 7,188 pc vs. 7,297 pc

Apogalacticon: 8,626 pc vs. 10,074 pc
 
Some Tabulated XHIP Data for Lambda Pyxidis
(see also: SIMBAD)

Astrometry
 2007A&A...474..653V
  Position Proper Motion
Right Ascension: 140.80140162° ±0.17 mas -122.50 ±0.80 mas/yr.
Declination: -28.83392308° ±0.17 mas 17.60 ±0.80 mas/yr.
     
Galactic Longitude: 257.25917300° -96.93 mas/yr.
Galactic Latitude: 15.03850612° -76.94 mas/yr.

Parallax: 16.98 ± 0.24 mas

Spectrography

Spectral Type: G8.5IIIb Fe-1 1989ApJS...71..245K.

Radial Velocity: 10.20 ±0.80 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: -0.09 ±0.05 dex  1991ApJS...75..579L, 1990ApJS...74.1075M.
 


Photometry
 
band magnitude Abs. Mag.
U
B 5.60 1.75
V 4.71 0.86
R
I 3.91 0.06
J 3.32 -0.53
H 2.81 -1.04
K 2.71 -1.14

  B-V: +0.89       V-I: +0.80

Derivations

Heliocentric distance: 58.88 pc (1.4% margin of error)

Galactocentric distance: 7,413 pc

Transverse velocity: 34.5 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) -12.5 pc -55.5 pc 15.3 pc
Velocity (U, V, W) -29.8 km/s -9.1 km/s -18.1 km/s

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