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] | 0.00[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 is a star in the constellation Serpens. The temperature, rotation, mass, and abundance of elements in this star are indistinguishable from the same properties in 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. 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. 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.
- ↑ 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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