Zeta Sagittae (HIP 97496)

Zeta Sagittae is a white main-sequence star in the constellation Sagitta. At 254 light years away, it shines at an apparent visual magnitude of 5.01. Zeta Sagittae is a component of a multiple-star system. It is moving through the Galaxy at a speed of 20.5 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,800 and 27,500 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 3.85 from a distance of 149 light years.

Sky position: RA 19h 49.0m, Dec +19 8.4'

Common designations: Zeta Sagittae, 8 Sagittae, HIP 97496, HD 187362, HR 7546

Vistas of Many Worlds

An engaging romp through the Galaxy!


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


Galactic Orbit of Zeta Sagittae

(compared to the Sun)

Eccentricity: 7.3% vs. 16.0%

Angle φ : -29.0 vs. 26.0

Semi-major axis : 7,872 pc vs. 8,686 pc

Semi-minor axis: 7,850 pc vs. 8,574 pc

Focus-to-center: 577 pc vs. 1,388 pc

Semilatus rectum : 7,829 pc vs. 8,464 pc

Perigalacticon: 7,294 pc vs. 7,297 pc

Apogalacticon: 8,449 pc vs. 10,074 pc
 


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

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 297.24437038 0.47 mas 18.70 0.70 mas/yr.
Declination: 19.14197825 0.39 mas 26.50 0.70 mas/yr.
     
Galactic Longitude: 56.48254478 32.31 mas/yr.
Galactic Latitude: -3.40290220 -2.79 mas/yr.

Parallax: 12.79 0.67 mas


Spectrography

Spectral Type: A2Vn 1995ApJS...99..135A.

Radial Velocity: -16.60 2.60 km/s [B rating] 2007AN....328..889K.

Iron Abundance [Fe/H]: n/a
 



Photometry
 
band magnitude Abs. Mag.
U
B 5.11 0.65
V 5.01 0.55
R
I 4.93 0.47
J
H
K

  B-V: +0.10       V-I: +0.08


Derivations

Heliocentric distance: 77.93 pc (5.2% margin of error)

Galactocentric distance: 7,357 pc

Transverse velocity: 12.0 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) 43.0 pc 64.9 pc -4.6 pc
Velocity (U, V, W) -19.1 km/s -7.3 km/s 0.0 km/s

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