Iota Cygni, a white main-sequence star in Cygnus
Iota Cygni is a white main-sequence star in the constellation Cygnus. At 121 light years away, it is the 386th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.76.
Iota Cygni (HIP 95853)
Iota Cygni is a white main-sequence star in the constellation Cygnus. At 121 light years away, it is the 386th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.76. It is moving through the Galaxy at a speed of 30.1 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,000 and 24,900 light years from the center of the Galaxy. It will come closest to the Sun 783,000 years from now when it will brighten to magnitude 3.17 from a distance of 92 light years.
Sky position: RA 19h 29.7m, Dec +51° 43.8'
Common designations: Iota Cygni, 10 Cygni, HIP 95853, HD 184006, HR 7420
Splendors of the Universe
Magnificent Monthly Calendar
Brightest stars in Cygnus:
(list all)
| Rank | Mag. | Star |
| 1 | 1.25 | Deneb |
| 2 | 2.23 | Sadr |
| 3 | 2.48 | Gienah |
| 4 | 2.86 | Delta Cygni |
| 5 | 3.05 | Albireo A |
| 6 | 3.21 | Zeta Cygni |
| 7 | 3.72 | Xi Cygni |
| 8 | 3.74 | Tau Cygni |
9
| 3.76
) Iota Cygni
| Rank | Mag. | Star |
| 10 | 3.80 | Kappa Cygni |
| 11 | 3.80 | Omicron-1 Cygni |
| 12 | 3.89 | Eta Cygni |
| 13 | 3.94 | Nu Cygni |
| 14 | 3.96 | Omicron-2 Cygni |
| 15 | 3.98 | Rho Cygni |
| 16 | 4.01 | 41 Cygni |
| 17 | 4.22 | 52 Cygni |
Hover over other bright stars to identify or click to jump.
Galactic Orbit of Iota Cygni
(compared to the Sun)
E
ccentricity: 6.2% vs. 16.0%Angle φ : -120.1°vs. 26.0°
Semi-major axis : 7,194 pc vs. 8,686 pc
Semi-minor axis: 7,180 pc vs. 8,574 pc
Focus-to-center
: 446 pcvs. 1,388 pcSemilatus rectum : 7,166 pc vs. 8,464 pc
Perigalacticon: 6,748 pc vs. 7,297 pc
Apogalacticon
: 7,639 pcvs. 10,074 pcSome Tabulated XHIP Data for Iota Cygni
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 292.42641387° ±0.10 mas | 20.59 ±0.10 mas/yr. |
| Declination: | 51.72946748° ±0.09 mas | 128.36 ±0.10 mas/yr. |
| Galactic Longitude: | 83.61158462° | 125.39 mas/yr. |
| Galactic Latitude: | 15.44868522° | 34.33 mas/yr. |
Parallax: 26.88 ± 0.11 mas
Spectrography
Spectral Type: A4Vn 1995ApJS...99..135A.
Radial Velocity: -19.50 ±2.70 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
3.91
1.06
V
3.76
0.91
R
I
3.61
0.75
J
3.74
0.88
H
3.69
0.84
K
3.60
0.75
B-V: +0.15 V-I: +0.15
Derivations
Heliocentric distance: 37.20 pc (0.4% margin of error)
Galactocentric distance: 7,396 pc
Transverse velocity: 22.9 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 4.0 pc | 35.6 pc | 9.9 pc |
| Velocity (U, V, W) | -24.2 km/s | -17.8 km/s | 0.6 km/s |