HD 143436

HD 143436

Observation data Epoch J2000      Equinox J2000
Constellation	Serpens
Right ascension	16^h 00^m 18.83726^s[1]
Declination	+00° 08′ 13.2306″[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: −136.615[1] mas/yr Dec.: −108.779[1] mas/yr
Parallax (π)	22.3164 ± 0.0456 mas[1]
Distance	146.2 ± 0.3 ly (44.81 ± 0.09 pc)
Absolute magnitude (MV)	4.87±0.10[4]
Details[4]
Mass	1.01±0.02 M☉
Radius	1.01+0.01 −0.04[1] R☉
Luminosity	1.047±0.003[1] L☉
Surface gravity (log g)	4.28±0.12 cgs
Temperature	5,768±43 K
Metallicity [Fe/H]	0.008 dex
Rotational velocity (v sin i)	< 2.6 km/s
Age	3.8±2.9 Gyr
Other designations
BD+00°3441, HIP 78399, SAO 121307, PPM 162138, LTT 14757, NLTT 41715[5]
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 most likely a younger age of 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. 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.
2. Høg, E.; et al. (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.
3. Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 05. Bibcode:1999MSS...C05....0H.
4. King, Jeremy R.; et al. (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. S2CID 6535115.
5. "HD 143436". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-12-05.