Delta Sagittae, a red bright giant star in Sagitta
Delta Sagittae is a red bright giant star in the constellation Sagitta. At 582 light years away, it is the 351st brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.68.
Delta Sagittae (HIP 97365)
Delta Sagittae is a red bright giant star in the constellation Sagitta. At 582 light years away, it is the 351st brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.68. Delta Sagittae is a multiple-star system. It is moving through the Galaxy at a speed of 9.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,800 and 35,300 light years from the center of the Galaxy.
Sky position: RA 19h 47.4m, Dec +18° 31.8'
Common designations: Delta Sagittae, 7 Sagittae, HIP 97365, HD 187076, HR 7536
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Brightest stars in Sagitta:
(list all)
| Rank | Mag. | Star |
| 1 | 3.51 | Gamma Sagittae |
2
| 3.68
) Delta Sagittae
| Rank | Mag. | Star |
| 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 |
Hover over other bright stars to identify or click to jump.
Galactic Orbit of Delta Sagittae
(compared to the Sun)
E
ccentricity: 19.4% vs. 16.0%Angle φ : 2.5°vs. 26.0°
Semi-major axis : 9,062 pc vs. 8,686 pc
Semi-minor axis: 8,889 pc vs. 8,574 pc
Focus-to-center
: 1,761 pcvs. 1,388 pcSemilatus rectum : 8,719 pc vs. 8,464 pc
Perigalacticon: 7,300 pc vs. 7,297 pc
Apogalacticon
: 10,823 pcvs. 10,074 pcSome Tabulated XHIP Data for Delta Sagittae
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 296.84693825° ±0.45 mas | 5.70 ±0.50 mas/yr. |
| Declination: | 18.53425889° ±0.41 mas | 10.00 ±0.50 mas/yr. |
| Galactic Longitude: | 55.76685048° | 11.51 mas/yr. |
| Galactic Latitude: | -3.38338383° | 0.08 mas/yr. |
Parallax: 5.49 ± 0.72 mas
Spectrography
Spectral Type: M2II + B0V 2000ApJ...541..298W.
Radial Velocity:
1.10 ±7.40 km/s [D rating]
2007AN....328..889K.
This star is a spectroscopic binary with an unsolved orbit.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
4.99
-1.26
V
3.68
-2.58
R
I
2.71
-3.55
J
H
K
B-V: +1.31 V-I: +0.97
Derivations
Heliocentric distance: 178.47 pc (13.1% margin of error)
Galactocentric distance: 7,301 pc
Transverse velocity: 9.7 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 100.2 pc | 147.3 pc | -10.5 pc |
| Velocity (U, V, W) | -7.4 km/s | 6.4 km/s | 0.0 km/s |