HR 7135
Appearance
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquila |
Right ascension | 18h 55m 27.44694s[1] |
Declination | +06° 36′ 55.0755″[1] |
Apparent magnitude (V) | 5.57[2] |
Characteristics | |
Spectral type | G9 III[3] |
U−B color index | +0.87[2] |
B−V color index | +1.04[2] |
R−I color index | 0.55 |
Astrometry | |
Radial velocity (Rv) | 23.31±0.09[4] km/s |
Proper motion (μ) | RA: +7.76[1] mas/yr Dec.: –84.98[1] mas/yr |
Parallax (π) | 11.33 ± 0.93 mas[1] |
Distance | 290 ± 20 ly (88 ± 7 pc) |
Orbit[4][5] | |
Primary | 62 Serpentis A |
Companion | 62 Serpentis B |
Period (P) | 2994±29 d |
Semi-major axis (a) | 26.6±3.4 Mas |
Eccentricity (e) | 0.243±0.026 |
Inclination (i) | 31.9±3.6° |
Longitude of the node (Ω) | 12.6±7.7° |
Periastron epoch (T) | 2444276.5±52 JD |
Argument of periastron (ω) (secondary) | 35±7° |
Semi-amplitude (K1) (primary) | 4.65±0.13 km/s |
Details | |
Surface gravity (log g) | 2.7[6] cgs |
Temperature | 4,721[6] K |
Metallicity [Fe/H] | –0.26[6] dex |
Rotational velocity (v sin i) | 0.0[6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
62 Serpentis is the Flamsteed designation for this binary star. Despite its name, the star can be found in the equatorial constellation of Aquila.[7]
References
- ^ a b c d e van Leeuwen, F. (November 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.
- ^ a b c Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99, Bibcode:1966CoLPL...4...99J.
- ^ a b "HR 7135 -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-07-26.
- ^ a b Griffin, R. F. (1981). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 41: HR 7135". The Observatory. 101: 208–211. Bibcode:1981Obs...101..208G.
- ^ Jancart, S.; et al. (2005). "Astrometric orbits of SB9 stars". Astronomy and Astrophysics. 442: 365–380. arXiv:astro-ph/0507695. Bibcode:2005A&A...442..365J. doi:10.1051/0004-6361:20053003.
- ^ a b c d Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209.
- ^ Kaler, James B. (1996), The ever-changing sky: a guide to the celestial sphere, Cambridge University Press, p. 119, ISBN 0-521-38053-7.