HD 143436

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]
Temperature	5768 ± 43[3] K
Metallicity	$\begin{smallmatrix}\left[\frac{m}{H}\right]\ =\ 0.00\end{smallmatrix}$[3]
Rotational velocity (v sin i)	< 2.6[3] km/s
Age	3.8 ± 2.9[3] Gyr
Other designations
BD+00 3441, HIP 78399, LTT 14757, NLTT 41715, PPM 162138, SAO 121307.[2]
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. ^ ^{a b c} Perryman, M. A. C. et al (April 1997). "The HIPPARCOS Catalogue". Astronomy & Astrophysics 323: L49−L52. Bibcode 1997A&A...323L..49P. 
2. ^ ^{a b} "G 16-24 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=G+16-24. Retrieved 2010-06-01. 
3. ^ ^{a b c d e f g h i j} 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.