Astronomy:HD 112014
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 12h 49m 06.67191s[1] |
| Declination | +83° 25′ 04.2208″[1] |
| Apparent magnitude (V) | 5.92[2] |
| Characteristics | |
| Spectral type | A0V + A2V[3] |
| B−V color index | 0.015±0.004[2] |
| Astrometry | |
| Radial velocity (Rv) | +1.0[4] km/s |
| Proper motion (μ) | RA: −24.369[1] mas/yr Dec.: 18.767[1] mas/yr |
| Parallax (π) | 7.8554 ± 0.0702[1] mas |
| Distance | 415 ± 4 ly (127 ± 1 pc) |
| Orbit[5] | |
| Period (P) | 3.2865 d |
| Eccentricity (e) | 0.0405±0.005 |
| Longitude of the node (Ω) | 211.05±0.04° |
| Periastron epoch (T) | JD 2424226.669 |
| Argument of periapsis (ω) (primary) | 211.1° |
| Semi-amplitude (K1) (primary) | 108.34±1.05 km/s |
| Semi-amplitude (K2) (secondary) | 128.86±1.07 km/s |
| Details | |
| Ba | |
| Radius | 2.88[6] R☉ |
| Rotational velocity (v sin i) | 15±12[6] km/s |
| Bb | |
| Radius | 2.44[6] R☉ |
| Rotational velocity (v sin i) | 13±12[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 112014 is a star system[7] in the northern constellation of Camelopardalis. It is dimly visible as a point of light with an apparent visual magnitude of 5.92.[2] The distance to this system is approximately 415 light years based on parallax measurements.[1]
The stars HD 112028 and HD 112014 were identified as a double star by F. G. W. Struve in 1820, and are listed as WDS 12492+8325 A and B, respectively, in the Washington Double Star Catalog.[8] The binary nature of component B, or HD 112014, was discovered by J. S. Plaskett in 1919. It is a double-lined spectroscopic binary with an orbital period of 3.29 days and an eccentricity (ovalness) of 0.04.[5] They are separated by 0.0759 astronomical unit|AU (11.35 Gm).[6] Both components are A-type main-sequence stars.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 Abt, Helmut A.; Morrell, Nidia I. (1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". Astrophysical Journal Supplement 99: 135. doi:10.1086/192182. Bibcode: 1995ApJS...99..135A.
- ↑ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Carnegie Institute Washington D.C. Publication (Carnegie Institution of Washington). doi:10.1086/323920. Bibcode: 1953GCRV..C......0W.
- ↑ 5.0 5.1 Plaskett, J. S. (January 1926). "Three spectroscopic binary orbits". Publications of the Dominion Observatory Victoria 3: 247–264. Bibcode: 1926PDAO....3..247P.
- ↑ 6.0 6.1 6.2 6.3 6.4 Howe, K. S.; Clarke, C. J. (January 2009). "An analysis of v sin (i) correlations in early-type binaries". Monthly Notices of the Royal Astronomical Society 392 (1): 448–454. doi:10.1111/j.1365-2966.2008.14073.x. Bibcode: 2009MNRAS.392..448H.
- ↑ Tokovinin, A. (September 2008). "Comparative statistics and origin of triple and quadruple stars". Monthly Notices of the Royal Astronomical Society 389 (2): 925–938. doi:10.1111/j.1365-2966.2008.13613.x. Bibcode: 2008MNRAS.389..925T.
- ↑ Mason, B. D. et al. (2014). "The Washington Visual Double Star Catalog". The Astronomical Journal 122 (6): 3466–3471. doi:10.1086/323920. Bibcode: 2001AJ....122.3466M.
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