HD 143436
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 16h 00m 18.8377s[1] |
| Declination | +00° 08′ 13.217″[1] |
| Apparent magnitude (V) | 8.035 |
| Characteristics | |
| Spectral type | G0[2] |
| B−V color index | 0.644[3] |
| Astrometry | |
| Radial velocity (Rv) | −24.7 ± 0.7[3] km/s |
| Proper motion (μ) | RA: −135.83 mas/yr Dec.: −110.31 mas/yr |
| Parallax (π) | 23.04 ± 1.03[1] mas |
| Distance | 142 ± 6 ly (43 ± 2 pc) |
| Absolute magnitude (MV) | 4.87 ± 0.10[3] |
| Details | |
| Mass | 1.01 ± 0.02[3] M☉ |
| Surface gravity (log g) | 4.28 ± 0.12[3] cgs |
| Temperature | 5768 ± 43[3] K |
| Metallicity | ![\begin{smallmatrix}\left[\frac{m}{H}\right]\ =\ 0.00\end{smallmatrix}](../I/m/77c77cb2926210f6f00b10b630158815.png) [3] |
| Rotational velocity (v sin i) | < 2.6[3] km/s |
| Age | 3.8 ± 2.9[3] 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.[3]
References
- ↑ 1.0 1.1 1.2 Perryman, M. A. C. et al. (April 1997). "The HIPPARCOS Catalogue". Astronomy & Astrophysics 323: L49−L52. Bibcode:1997A&A...323L..49P.
- ↑ 2.0 2.1 "G 16-24 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2010-06-01.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 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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