HD 143436
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 16h 00m 18.83807s[1] |
| Declination | +00° 08′ 13.2332″[1] |
| Apparent magnitude (V) | 8.03[2] |
| Characteristics | |
| Spectral type | G3V[3] |
| B−V color index | 0.644[4] |
| Astrometry | |
| Radial velocity (Rv) | −24.7 ± 0.7[4] km/s |
| Proper motion (μ) | RA: −135.26[1] mas/yr Dec.: −108.52[1] mas/yr |
| Parallax (π) | 24.67 ± 0.95[1] mas |
| Distance | 132 ± 5 ly (41 ± 2 pc) |
| Absolute magnitude (MV) | 4.87 ± 0.10[4] |
| Details | |
| Mass | 1.01 ± 0.02[4] M☉ |
| Surface gravity (log g) | 4.28 ± 0.12[4] cgs |
| Temperature | 5768 ± 43[4] K |
| Metallicity [Fe/H] | 0.008[4] dex |
| Rotational velocity (v sin i) | < 2.6[4] km/s |
| Age | 3.8 ± 2.9[4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 143436 also known as HIP 78399 is a G-type star in the constellation Serpens. The temperature, rotation, mass, and abundance of elements in this star are close to properties of the Sun, and for this reason it is a solar twin candidate. The only notable difference is an approximately six times higher abundance of lithium compared to the Sun and a much younger age at 3.8 Gyr. The space velocity components of this star are (U, V, W) = (−19.2, −38.6, −7.0) km/s.[4]
References
- 1 2 3 4 5 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862.
- ↑ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 05: 0. Bibcode:1999MSS...C05....0H.
- 1 2 3 4 5 6 7 8 9 10 King, Jeremy R.; Boesgaard, Ann M.; Schuler, Simon C. (November 2005). "Keck HIRES Spectroscopy of Four Candidate Solar Twins". The Astronomical Journal. 130 (5): 2318–2325. arXiv:astro-ph/0508004. Bibcode:2005AJ....130.2318K. doi:10.1086/452640.
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