| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 20h 32m 45.493s[1] |
| Declination | +40° 39′ 36.75″[1] |
| Apparent magnitude (V) | 13.15[2] |
| Characteristics | |
| Evolutionary stage | B[e] star[3] |
| Spectral type | Bpe B0-1.5 I + B0 III[4] |
| Astrometry | |
| Radial velocity (Rv) | −9 ± 2[4] km/s |
| Proper motion (μ) | RA: 30.2[2] mas/yr Dec.: −14.4[2] mas/yr |
| Distance | 4,560 ly (1400[5] pc) |
| Absolute magnitude (MV) | −6.7 / −7.3[5] |
| Details | |
| Mass | 38[4] M☉ |
| Luminosity (bolometric) | 400,000 / 630,000[5] L☉ |
| Temperature | 24,000 ± 4,000[4] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
MWC 349 is a double (likely, triple) star system in the constellation Cygnus. Its properties are still debated and it may be a massive highly luminous star or a very young less luminous Herbig Ae/Be star. MWC 349 is also a variable star with the designation V1478 Cygni.
- ^ a b Zacharias, N. (2003). "VizieR Online Data Catalog: The Second U.S. Naval Observatory CCD Astrograph Catalog (UCAC2)". CDS/ADC Collection of Electronic Catalogues. 1289. Bibcode:2003yCat.1289....0Z.
- ^ a b c Zacharias, N. (2012). "The fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". VizieR On-line Data Catalog. 1322. Bibcode:2012yCat.1322....0Z.
- ^ Quirrenbach, A.; Albrecht, S. (2010). "Observations of the B[e] Star MWC 349 with Mid-Infrared Interferometry". The Interferometric View on Hot Stars (Eds. Th. Rivinius & M. Curé) Revista Mexicana de Astronomía y Astrofísica, Serie de Conferencias. 38: 74. Bibcode:2010RMxAC..38...74Q.
- ^ a b c d Aret, A; Kraus, M; Šlechta, M (2015). "Spectroscopic survey of emission-line stars – I. B[e] stars". Monthly Notices of the Royal Astronomical Society. 456 (2): 1424. arXiv:1511.07270. Bibcode:2016MNRAS.456.1424A. doi:10.1093/mnras/stv2758. S2CID 118407225.
- ^ a b c Cite error: The named reference
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