Astronomy:HD 121228
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Short description: Star in the constellation Centaurus
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 55m 52.322s[1] |
| Declination | −59° 22′ 16.45″[1] |
| Apparent magnitude (V) | 7.86[2] |
| Characteristics | |
| Spectral type | B1 Ib[3] |
| Apparent magnitude (U) | 7.34 |
| Apparent magnitude (B) | 8.00 |
| Apparent magnitude (V) | 7.86 |
| Apparent magnitude (R) | 8.88 |
| Apparent magnitude (G) | 7.7591 |
| Apparent magnitude (J) | 7.428 |
| Apparent magnitude (H) | 7.426 |
| Apparent magnitude (K) | 7.385 |
| Astrometry | |
| Proper motion (μ) | RA: −3.376[1] mas/yr Dec.: −1.300[1] mas/yr |
| Parallax (π) | 0.5846 ± 0.0260[1] mas |
| Distance | 5,600 ± 200 ly (1,710 ± 80 pc) |
| Absolute magnitude (MV) | −5.32[4] |
| Details | |
| Mass | 7.0[5] M☉ |
| Radius | 19.6[6] R☉ |
| Luminosity | 4,124[7] L☉ |
| Surface gravity (log g) | 2.14[7] cgs |
| Temperature | 26,424[8] K |
| Age | 31.6[5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 121228 is a blue supergiant star located in the constellation Centaurus. The star is noted for its close visual proximity to the planetary nebula SuWt 2.[9]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Zacharias, N.; Finch, C. T.; Girard, T. M.; Henden, A.; Bartlett, J. L.; Monet, D. G.; Zacharias, M. I. (2012). "VizieR Online Data Catalog: UCAC4 Catalogue (Zacharias+, 2012)". VizieR On-line Data Catalog. Bibcode: 2012yCat.1322....0Z.
- ↑ Houk, Nancy (1975). Michigan catalogue of two-dimensional spectral types for the HD stars. 1. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode: 1975MSS...C01....0H.
- ↑ Melnik, A. M.; Dambis, A. K. (2020). "Distance scale for high-luminosity stars in OB associations and in field with Gaia DR2. Spurious systematic motions". Astrophysics and Space Science 365 (7): 112. doi:10.1007/s10509-020-03827-0. Bibcode: 2020Ap&SS.365..112M.
- ↑ 5.0 5.1 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society 410 (1): 190. doi:10.1111/j.1365-2966.2010.17434.x. Bibcode: 2011MNRAS.410..190T.
- ↑ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics 657: A7. doi:10.1051/0004-6361/202142146. ISSN 0004-6361. Bibcode: 2022A&A...657A...7K.
- ↑ 7.0 7.1 Fouesneau, M.; Andrae, R.; Dharmawardena, T.; Rybizki, J.; Bailer-Jones, C. A. L.; Demleitner, M. (2022). "Astrophysical parameters from Gaia DR2, 2MASS, and AllWISE". Astronomy and Astrophysics 662: A125. doi:10.1051/0004-6361/202141828. Bibcode: 2022A&A...662A.125F.
- ↑ Westin, T. N. G. (1985). "The local system of early type stars. Spatial extent and kinematics". Astronomy and Astrophysics Supplement Series 60: 99. Bibcode: 1985A&AS...60...99W.
- ↑ "HD 121228". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+121228.
See also
- Zeta Persei - Same spectral class
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