Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cygnus |
HD 193322A | |
Right ascension | 20h 18m 06.9877s[1] |
Declination | +40° 43′ 55.4947″[1] |
Apparent magnitude (V) | +5.958[1] |
HD 193322B | |
Right ascension | 20h 18m 06.7684s[2] |
Declination | +40° 43′ 54.3586″[2] |
Apparent magnitude (V) | +8.23[2] |
Characteristics | |
HD 193322Aa | |
Evolutionary stage | main-sequence star |
Spectral type | O9Vnn[3] |
HD 193322Ab1 | |
Evolutionary stage | giant star |
Spectral type | O8.5 III[3] |
HD 193322Ab2 | |
Evolutionary stage | main-sequence star |
Spectral type | B2.5 V?[3] |
HD 193322B | |
Evolutionary stage | main-sequence star |
Spectral type | B1.5 V[2] |
HD 193322C | |
Evolutionary stage | main-sequence star |
Spectral type | B8 V[3] |
HD 193322D | |
Evolutionary stage | main-sequence star |
Spectral type | B9 V[3] |
Astrometry | |
HD 193322A | |
Proper motion (μ) | RA: -2.488[4] mas/yr Dec.: -6.837[4] mas/yr |
Parallax (π) | 1.0669 ± 0.1403 mas[4] |
Distance | approx. 3,100 ly (approx. 900 pc) |
HD 193322B | |
Proper motion (μ) | RA: -3.070[5] mas/yr Dec.: -6.015[5] mas/yr |
Parallax (π) | 0.9268 ± 0.0432 mas[5] |
Distance | 3,500 ± 200 ly (1,080 ± 50 pc) |
Orbit[6] | |
Primary | HD 193322Aa |
Companion | HD 193322Ab |
Period (P) | 44±1 yr |
Semi-major axis (a) | 0.0525+0.0025 −0.0020″ |
Eccentricity (e) | 0.58+0.03 −0.04 |
Inclination (i) | 37+6 −4° |
Details[3] | |
HD 193322A | |
Mass | Aa: 21 M☉ Ab1: 23 M☉ Ab2: 9 M☉ |
Surface gravity (log g) | Aa: 4.0 cgs Ab1: 3.5 cgs Ab2: 4.0 cgs |
Temperature | Aa: 33,000 K Ab1: 32,500 K Ab2: 20,000 K |
Rotational velocity (v sin i) | Aa: 350 km/s Ab1: 40 km/s Ab2: 200 km/s |
Age | 7[7] Myr |
HD 193322B | |
Surface gravity (log g) | 4.0 cgs |
Temperature | 23,000 K |
Rotational velocity (v sin i) | 100 km/s |
Other designations | |
HD 193322A: TYC 3155-2321-1, Gaia EDR3 2062360626011542272 304.5291012654289 | |
HD 193322B: TYC 3155-2321-2, Gaia EDR3 2062360626009209856 | |
HD 193322C: UCAC2 46029301, 2MASS J20180562+4043248, Gaia EDR3 2062359152847218432 | |
HD 193322D: UCAC2 46029306, 2MASS J20180691+4043055, Gaia EDR3 2062359084127740032 | |
Database references | |
SIMBAD | data |
data2 | |
data3 | |
data4 | |
data5 |
HD 193322 (HR 7767) is a group of six stars which appear to be at least loosely bound into a system in the constellation Cygnus.[6] The stars comprise the core of the young open cluster Collinder 419 (Cr 419), which contains a total of 51 known stars.[8] Another prominent member of the cluster is the eclipsing binary star V470 Cygni (HD 228911). The cluster lies at a distance of about 3500 light years and its stars are only a few million years old.
SIMBAD-A
was invoked but never defined (see the help page).SIMBAD-B
was invoked but never defined (see the help page).Brummelaar2011
was invoked but never defined (see the help page).EDR3-A
was invoked but never defined (see the help page).EDR3-B
was invoked but never defined (see the help page).Apellaniz2019
was invoked but never defined (see the help page).roberts2010
was invoked but never defined (see the help page).gaia
was invoked but never defined (see the help page).