HD 24496
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Taurus |
| Right ascension | 03h 54m 28.03326s |
| Declination | +16° 36′ 57.7897″ |
| Apparent magnitude (V) | 6.81 (6.9 + 11.1) |
| Characteristics | |
| Spectral type | G7V + M2V |
| Apparent magnitude (B) | 7.529 |
| Apparent magnitude (R) | 6.40 |
| Apparent magnitude (I) | 6.000 |
| Apparent magnitude (J) | 5.384±0.024 |
| Apparent magnitude (H) | 5.102±0.026 |
| Apparent magnitude (K) | 4.995±0.017 |
| B−V color index | 0.719±0.001 |
| Astrometry | |
| Radial velocity (Rv) | +18.99±0.09 km/s |
| Proper motion (μ) | RA: +214.191 mas/yr Dec.: −167.336 mas/yr |
| Parallax (π) | 48.8107±0.0474 mas |
| Distance | 66.82 ± 0.06 ly (20.49 ± 0.02 pc) |
| Absolute magnitude (MV) | 5.26 |
| Orbit | |
| Primary | A |
| Secondary | B |
| Period (P) | 589+57 −84 years |
| Semi-major axis (a) | 80.2+4.6 −7.8 au |
| Eccentricity (e) | 0.099+0.130 −0.054 |
| Inclination (i) | 117.11+2.90 −0.91° |
| Longitude of the node (Ω) | 38.7+1.2 −1.4° |
| Periastron epoch (T) | JD = 2577107+8299 −10043 |
| Argument of periastron (ω) (secondary) | 318+13 −32° |
| Details | |
| A | |
| Mass | 0.941±0.053 M☉ |
| Radius | 0.91±0.03 R☉ |
| Luminosity | 0.705+0.073 −0.076 L☉ |
| Surface gravity (log g) | 4.52+0.03 −0.04 cgs |
| Temperature | 5,572±44 K |
| Metallicity [Fe/H] | −0.01±0.03 dex |
| Rotational velocity (v sin i) | 0.0±0.5 km/s |
| Age | 3.316+3.88 −3.16 Gyr |
| B | |
| Mass | 0.5389+0.0082 −0.0081 M☉ |
| Other designations | |
| BD+16°527, GC 4699, GJ 3255, HD 24496, HIP 18267, SAO 93662, PPM 119451, WDS J03545+1637, LTT 11292, NLTT 12133 | |
| Database references | |
| SIMBAD | data |
| B | |
HD 24496 is a binary star system in the equatorial constellation of Taurus. The combined apparent visual magnitude of the pair is 6.81, which is too faint to be readily visible to the normal human eye. The system is located at a distance of 66.8 light-years from the Sun, based on parallax, and is drifting further away with a radial velocity of +19 km/s. It is traversing the celestial sphere with a proper motion of 0.276″ per year.
The magnitude 6.9 primary star, designated component A, is a G-type main-sequence star with a stellar classification of G7V. It is around three billion years old with a low projected rotational velocity. The star has 96% of the mass of the Sun and 91% of the Sun's radius. The metallicity, what astronomers term the abundance of heavier elements, is about the same as in the Sun. The star is radiating 71% of the luminosity of the Sun from its photosphere at an effective temperature of 5,572 K.
The secondary companion, component B, is of magnitude 11.1 red dwarf of class M2V that shares a common proper motion with the primary. They have an orbital separation of 80 astronomical units, taking 590 years to complete an orbit around their centre of mass.
References
- 1 2 3 4 5 6 7 8 9 10 11 12 13 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
- 1 2 3 4 5 6 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.
- 1 2 3 Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466–3471, Bibcode:2001AJ....122.3466M, doi:10.1086/323920.
- 1 2 Koen, C.; et al. (2010), "UBV(RI)C JHK observations of Hipparcos-selected nearby stars", Monthly Notices of the Royal Astronomical Society, 403 (4): 1949, Bibcode:2010MNRAS.403.1949K, doi:10.1111/j.1365-2966.2009.16182.x, hdl:10566/813.
- 1 2 Raghavan, Deepak; et al. (September 2010), "A Survey of Stellar Families: Multiplicity of Solar-type Stars", The Astrophysical Journal Supplement, 190 (1): 1–42, arXiv:1007.0414, Bibcode:2010ApJS..190....1R, doi:10.1088/0067-0049/190/1/1, S2CID 368553.
- 1 2 3 4 Giovinazzi, Mark R.; Blake, Cullen H.; Robertson, Paul; Lin, Andrea S. J.; Gupta, Arvind F.; Mahadevan, Suvrath; Fernandes, Rachel B.; Wright, Jason T.; Gagliuffi, Daniella Bardalez (2025-05-18), "The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems", The Astronomical Journal, 170: 52, arXiv:2505.12563, Bibcode:2025AJ....170...52G, doi:10.3847/1538-3881/add922
- 1 2 Marsden, S. C.; et al. (November 2014), "A BCool magnetic snapshot survey of solar-type stars", Monthly Notices of the Royal Astronomical Society, 444 (4): 3517–3536, arXiv:1311.3374, Bibcode:2014MNRAS.444.3517M, doi:10.1093/mnras/stu1663, S2CID 53988884.
- ↑ "HD 24496". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-12-10.
- ↑ Fuhrmann, K.; et al. (February 2017), "Multiplicity among Solar-type Stars", The Astrophysical Journal, 836 (1): 23, Bibcode:2017ApJ...836..139F, doi:10.3847/1538-4357/836/1/139, 139.
- ↑ Lépine, Sébastien; Shara, Michael M. (March 2005), "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)", The Astronomical Journal, 129 (3): 1483–1522, arXiv:astro-ph/0412070, Bibcode:2005AJ....129.1483L, doi:10.1086/427854, S2CID 2603568.
- ↑ Abt, Helmut A.; Willmarth, Daryl (January 2006), "The Secondaries of Solar-Type Primaries. I. The Radial Velocities", The Astrophysical Journal Supplement Series, 162 (1): 207–226, Bibcode:2006ApJS..162..207A, doi:10.1086/498095, S2CID 123629445.
