Beta Sagittae (HIP 96837)

Beta Sagittae is an orange giant star in the constellation Sagitta. At 439 light years away, it shines at an apparent visual magnitude of 4.39. The iron abundance of Beta Sagittae is +0.08 (120.2% of the Sun). It is moving through the Galaxy at a speed of 31.1 km/s relative to the Sun. Its projected Galactic orbit carries it between 18,400 and 24,100 light years from the center of the Galaxy. It will come closest to the Sun 3.0 million years from now when it will brighten to magnitude 3.64 from a distance of 310 light years.

Sky position: RA 19h 41.0m, Dec +17 28.8'

Common designations: Beta Sagittae, 6 Sagittae, HIP 96837, HD 185958, HR 7488

Crescent Moon

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Brightest stars in Sagitta:
(list all)

1

|    3.51

)   Gamma Sagittae

2

|    3.68

)   Delta Sagittae

3

|    4.39

)   Sham

4

|    4.39

)   Beta Sagittae

5

|    5.01

)   Zeta Sagittae

6

|    5.09

)   Eta Sagittae

7

|    5.33

)   13 Sagittae

8

|    5.54

)   11 Sagittae

9

|    5.65

)   1 Sagittae

10

|    5.67

)   Epsilon Sagittae

11

|    5.71

)   10 Sagittae

12

|    5.80

)   15 Sagittae

13

|    5.82

)   HR 7780

14

|    5.99

)   HR 7662

15

|    6.03

)   HR 7299

16

|    6.08

)   Gliese 746

17

|    6.11

)   HR 7216

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


Galactic Orbit of Beta Sagittae

(compared to the Sun)

Eccentricity: 13.5% vs. 16.0%

Angle φ : 160.2 vs. 26.0

Semi-major axis : 6,511 pc vs. 8,686 pc

Semi-minor axis: 6,451 pc vs. 8,574 pc

Focus-to-center: 878 pc vs. 1,388 pc

Semilatus rectum : 6,392 pc vs. 8,464 pc

Perigalacticon: 5,632 pc vs. 7,297 pc

Apogalacticon: 7,389 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for Beta Sagittae
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 295.26222386 0.15 mas 8.70 0.15 mas/yr.
Declination: 17.47612364 0.15 mas -33.31 0.17 mas/yr.
     
Galactic Longitude: 54.09720610 -24.69 mas/yr.
Galactic Latitude: -2.60181019 -23.99 mas/yr.

Parallax: 7.42 0.26 mas


Spectrography

Spectral Type: K0III 1990A&AS...85.1069S.

Radial Velocity: -22.00 0.30 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: 0.08 0.05 dex  1995AJ....110.2968L, 1990ApJS...74.1075M.
 



Photometry
 
band magnitude Abs. Mag.
U
B 5.43 -0.21
V 4.39 -1.25
R
I 3.54 -2.11
J 2.44 -3.21
H 1.98 -3.66
K 1.79 -3.85

  B-V: +1.04       V-I: +0.85


Derivations

Heliocentric distance: 134.57 pc (3.5% margin of error)

Galactocentric distance: 7,322 pc

Transverse velocity: 22.0 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) 78.8 pc 108.9 pc -6.1 pc
Velocity (U, V, W) -0.5 km/s -27.6 km/s -14.3 km/s

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