HD 143436

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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]
Spectral type G3V[3]
B−V color index 0.644[4]
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
Distance132 ± 5 ly
(41 ± 2 pc)
Absolute magnitude (MV)4.87 ± 0.10[4]
Mass1.01 ± 0.02[4] M
Surface gravity (log g)4.28 ± 0.12[4] cgs
Temperature5768 ± 43[4] K
Metallicity [Fe/H]0.008[4] dex
Rotational velocity (v sin i)< 2.6[4] km/s
Age3.8 ± 2.9[4] Gyr
Other designations
BD+00 3441, HIP 78399, LTT 14757, NLTT 41715, PPM 162138, SAO 121307
Database references

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]


  1. ^ a b c d e 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.
  2. ^ 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.
  3. ^ 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.
  4. ^ 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.