HD 8574
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Pisces |
Right ascension | 01h 25m 12.52s[1] |
Declination | +28° 34′ 00.1″[1] |
Apparent magnitude (V) | +7.12 |
Characteristics | |
Spectral type | F8 |
Astrometry | |
Proper motion (μ) | RA: 250.87 ± 0.58[1] mas/yr Dec.: -158.06 ± 0.34[1] mas/yr |
Parallax (π) | 22.44 ± 0.53[1] mas |
Distance | 145 ± 3 ly (45 ± 1 pc) |
Details | |
Mass | 1.144 ± 0.003[2] M☉ |
Radius | 1.39 ± 0.01[2] R☉ |
Luminosity | 2.335 ± 0.001[2] L☉ |
Surface gravity (log g) | 4.21 ± 0.03[2] cgs |
Temperature | 6065 ± 6[2] K |
Age | 5.0 ± 0.1[2] Gyr |
Other designations | |
HD 8574 is a yellow-white star in the constellation Pisces. It has an apparent magnitude of +7.12 and absolute magnitude of +3.90. The stellar distance is 45 parsecs or 145 light years from the Solar System.
In 2001, an extrasolar planet in an eccentric orbit was announced by the European Southern Observatory.[3] The discovery was published in 2003.[4]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | >1.96 ± 0.18 MJ | 0.76 ± 0.04 | 225 ± 1.14 | 0.37 ± 0.082 | — | — |
See also
References
- 1 2 3 4 5 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. Vizier catalog entry
- 1 2 3 4 5 6 Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
- ↑ "Exoplanets: The Hunt Continues!" (Press release). Garching, Germany: European Southern Observatory. April 4, 2001. Retrieved December 27, 2012.
- ↑ Perrier, C.; et al. (2003). "The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates". Astronomy and Astrophysics. 410 (3): 1039–1049. arXiv:astro-ph/0308281. Bibcode:2003A&A...410.1039P. doi:10.1051/0004-6361:20031340.
- ↑ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
External links
Coordinates: 01h 25m 12.5168s, +28° 34′ 00.096″
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