HD 49306
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Volans |
| Right ascension | 06h 42m 25.55s[1] |
| Declination | −67° 50′ 35.16″[1] |
| Apparent magnitude (V) | 6.70±0.01[2] |
| Characteristics | |
| Spectral type | B9.5/A0V[3] |
| B−V color index | -0.02 [4] |
| Astrometry | |
| Radial velocity (Rv) | +74.66±24.20 km/s |
| Proper motion (μ) | RA: -20.345[1] mas/yr Dec.: +37.493[1] mas/yr |
| Parallax (π) | 7.3190 ± 0.0365[1] mas |
| Distance | 446 ± 2 ly (136.6 ± 0.7 pc) |
| Absolute magnitude (MV) | +1.08 [5] |
| Details | |
| Mass | 2.8±0.4[6] M☉ |
| Radius | 2.00+0.05 −0.06[6] R☉ |
| Luminosity | 48.8+5.9 −2.9[6] L☉ |
| Surface gravity (log g) | 4.28+0.04 −0.09[6] cgs |
| Temperature | 10974+395 −239[6] K |
| Age | 316[7] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 49306 is a star in the constellation Volans. With an apparent magnitude of 6.70, it is hard to see with the unaided eye, but can be seen with binoculars. The star is located 446 light-years (137 pc) from Earth based on parallax, but is moving away with a radial velocity of +74.66 km/s.
Properties[edit]
HD 49306 has a classification of "B9.5/A0V", which states that the star has the characteristics of a B9.5 and A0 main sequence star. It has 2.8 times the Sun's mass, and double the Sun's radius. HD 49306 radiates at 48.8 times the Sun's luminosity off its photosphere at an effective temperature of 10,974 K. HD 49306 is young, with an estimated age of 316 million years.
References[edit]
- ↑ 1.0 1.1 1.2 1.3 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000-03-01). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. ISSN 0004-6361.
- ↑ Houk, N.; Cowley, A. P. (1975). "University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_f0". University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_f0., by Houk, N.; Cowley, A. P.. Ann Arbor, MI (USA): Department of Astronomy, University of Michigan, 19 + 452 p.
- ↑ ESA (1997). "The HIPPARCOS and TYCHO catalogues. Astrometric and photometric star catalogues derived from the ESA HIPPARCOS Space Astrometry Mission". 1200.
- ↑ Anderson, E.; Francis, Ch. (2012-05-01). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38: 331–346. doi:10.1134/S1063773712050015. ISSN 1063-7737.
- ↑ 6.0 6.1 6.2 6.3 6.4 Stassun, Keivan G.; Oelkers, Ryan J.; Paegert, Martin; Torres, Guillermo; Pepper, Joshua; De Lee, Nathan; Collins, Kevin; Latham, David W.; Muirhead, Philip S.; Chittidi, Jay; Rojas-Ayala, Bárbara (2019-10-01). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158: 138. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256.
- ↑ Gontcharov, G. A. (2012-12-01). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38: 771–782. doi:10.1134/S1063773712120031. ISSN 1063-7737.
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