 KIC 9832227 (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 29m 15.950s[1] |
| Declination | +46° 37′ 19.86″[1] |
| Apparent magnitude (V) | 12.27 – 12.46[2] |
| Characteristics | |
| Spectral type | K2III/IV[3] |
| Variable type | Eclipsing[4] |
| Astrometry | |
| Proper motion (μ) | RA: −9.505[1] mas/yr Dec.: −5.718[1] mas/yr |
| Parallax (π) | 1.5798 ± 0.0134 mas[1] |
| Distance | 2,060 ± 20 ly (633 ± 5 pc) |
| Orbit[5] | |
| Period (P) | 0.4282579 days |
| Semi-major axis (a) | 2.992 R☉ |
| Inclination (i) | 53.2° |
| Periastron epoch (T) | 2455688.49913 |
| Details[5] | |
| A | |
| Mass | 1.395 M☉ |
| Radius | 1.581 R☉ |
| Luminosity | 2.609 L☉ |
| Surface gravity (log g) | 4.19 cgs |
| Temperature | 5800 K |
| Rotational velocity (v sin i) | 149.7 km/s |
| B | |
| Mass | 0.318 M☉ |
| Radius | 0.830 R☉ |
| Luminosity | 0.789 L☉ |
| Surface gravity (log g) | 4.10 cgs |
| Temperature | 5920 K |
| Rotational velocity (v sin i) | 84.7 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
KIC 9832227 is a contact binary star system in the constellation Cygnus, located about 2,060 light-years away. It is also identified as an eclipsing binary with an orbital period of almost 11 hours.[4]
- ^ a b c d e Cite error: The named reference
dr3was invoked but never defined (see the help page). - ^ Cite error: The named reference
AAVSOwas invoked but never defined (see the help page). - ^ Cite error: The named reference
frasca2016was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Kinemuchi, Karenwas invoked but never defined (see the help page). - ^ a b Molnar, Lawrence A.; Van Noord, Daniel M.; Steenwyk, Steven D.; Spedden, Chris J.; Kinemuchi, Karen (2015). "A prediction of a luminous red nova eruption" (PDF). American Astronomical Society. 225 (225): 415.05. Bibcode:2015AAS...22541505M. Archived from the original (PDF) on 7 January 2017.