Related Research Articles
HD 88133 is an 8th magnitude star in the constellation of Leo. It is classified as a yellow main sequence star. It is slightly more massive than the Sun, cooler and more luminous. Located at a distance of 241 light years from Earth it is not in our immediate neighbourhood and thus not visible to the unaided eye. With a small telescope it should be easily visible.
HD 125612 is a binary star system with three exoplanetary companions in the equatorial constellation of Virgo. It is too dim to be visible to the naked eye, having an apparent visual magnitude of 8.31. The system is located at a distance of 188 light years from the Sun based on parallax measurements, but it is drifting closer with a radial velocity of −18 km/s.
HIP 14810 is a star with three exoplanetary companions in the northern constellation of Aries. It positioned about 1.3° to the north of Delta Arietis, but is too faint to be visible to the naked eye with an apparent visual magnitude of 8.6. The system is located at a distance of 165 light-years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of −5 km/s.
HD 11506 is a star in the equatorial constellation of Cetus. It has a yellow hue and can be viewed with a small telescope but is too faint to be visible to the naked eye, having an apparent visual magnitude of 7.51. The distance to this object is 167 light years based on parallax, but it is drifting closer to the Sun with a radial velocity of −7.5 km/s. It has an absolute magnitude of 3.94.
HD 11506 b is an extrasolar planet that orbits the star HD 11506 167 light years away in the constellation of Cetus. This planet was discovered in 2007 by the N2K Consortium using the Keck telescope to detect the radial velocity variation of the star caused by the planet. A second planet, HD 11506 c, was discovered in 2015.
HD 231701 is a yellow-white hued star in the northern constellation of Sagitta, near the southern constellation border with Aquila. With an apparent visual magnitude of 8.97, it is too dim to be viewed with the naked eye, but can be seen with powerful binoculars or a small telescope. Parallax measurements provide a distance estimate of approximately 356 light years from the Sun, but it is drifting closer with a radial velocity of −63 km/s. It is predicted to come as close as 189.5 light-years in 1.345 million years.
HD 5319 is an 8th magnitude star approximately 319 light years away in the constellation Cetus. It is a subgiant star of spectral type K3, having run out of hydrogen in its core. When it was main-sequence, the spectral type was early F or late A.
HD 33283 is a star in the southern constellation Lepus with one planet and a co-moving stellar companion. With an apparent visual magnitude of 8.05, the star is too faint to be seen with the naked eye. It is located at a distance of 294 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +4.5.
HD 86081 is a yellow-hued star in the equatorial constellation of Sextans. It has the proper name Bibha, after Indian physicist Bibha Chowdhuri. The name was suggested in the NameExoWorlds competition by Ananyo Bhattacharya, a mechanical engineering student of the Sardar Vallabhbhai National Institute of Technology Surat. With an apparent visual magnitude of 8.73, this star is too dim to be viewed with the naked eye but can be seen with a small telescope. It is located at a distance of approximately 340 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +31 km/s.
HD 37605 is a star in the equatorial constellation of Orion. It is orange in hue but is too faint to be visible to the naked eye, having an apparent visual magnitude of 8.67. Parallax measurements yield a distance estimate of 153 light years from the Sun. It has a high proper motion and is drifting closer with a radial velocity of −22 km/s.
HD 109749 is a binary star about 206 light years away in the constellation of Centaurus.
HD 149143, formally named Rosalíadecastro, is a star located in the Ophiuchus constellation that has spectral type of G0 located at a distance of 240 light-years from us. Its apparent magnitude is 7.9 and the absolute magnitude is 3.9.
HD 88133 b is an extrasolar planet orbiting the star HD 88133. It is probably less massive than Jupiter and even Saturn. It orbits the star in a very tight orbit, completing one revolution around the star in every three and half days or so. Despite the relatively large radius of the star, no transits have been detected.
HD 5319 b is a gas giant exoplanet discovered in 2007 in the constellation of Cetus. This planet has a minimum mass nearly two times that of Jupiter. The planet has an almost circular orbit, with an eccentricity of only 0.02 and a period of 641 days. An additional planet in the system was discovered in 2015 and may be in a 4:3 mean motion resonance with planet b.
HIP 14810 c is an extrasolar planet approximately 165 light-years away in the constellation of Aries. This planet has mass at least 1.28 times that of Jupiter and orbits at 0.545 AU in an eccentric orbit. The planet was discovered by the N2K Consortium in 2006 and announced in a paper published in 2007. With the discovery of a third planet in the system which was announced in 2009, the parameters of this planet were revised.
HIP 14810 d is an extrasolar planet approximately 165 light-years away in the constellation of Aries. This planet has mass at least 0.57 times that of Jupiter and orbits at 1.89 AU in an eccentric orbit.
HD 179079 is a star with an exoplanetary companion in the equatorial constellation of Aquila. It has an apparent visual magnitude of approximately 7.96, making it too faint to be readily visible to the naked eye. The distance to this star can be determine using parallax measurements, which yields an estimate of approximately 228 light years. It is drifting further away with a radial velocity of +20 km/s.
HD 171238 b is an extrasolar planet which orbits the G-type main sequence star HD 171238, located approximately 164 light years away in the constellation Sagittarius. This planet has minimum mass two and a half times greater than Jupiter and orbits two times closer to the star than Jupiter to the Sun. However this planet orbits in an eccentric orbit, about two astronomical units difference between periastron and apastron distances. This planet was discovered in August 2009 by using the radial velocity method in La Silla Observatory, Chile.
HD 73534 b is an extrasolar planet which orbits the G-type subgiant star HD 73534, located approximately 272 light years away in the constellation Cancer. It is at least 15% more massive than Jupiter and orbits at an average distance of 3.15 AU and takes 4.9 years to complete the orbit in a nearly circular path with an eccentricity similar to Jupiter. This planet was detected by radial velocity method on August 12, 2009.
HD 207832 is a G-type main-sequence star. Its surface temperature is 5764±15 K. HD 207832 is slightly enriched compared to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of 0.17±0.01 and is much younger at an age of 0.74±0.62 billion years. Kinematically, it belongs to the thin disk of the Milky Way.
References
- 1 2 3 4 5 Ment, Kristo; et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5). 213. arXiv: 1809.01228 . Bibcode:2018AJ....156..213M. doi: 10.3847/1538-3881/aae1f5 . S2CID 119243619.
- ↑ Tuomi, M.; Kotiranta, S. (2009). "Bayesian analysis of the radial velocities of HD 11506 reveals another planetary companion". Astronomy and Astrophysics. 496 (2): L13–L16. arXiv: 0902.2997 . Bibcode:2009A&A...496L..13T. doi:10.1051/0004-6361/200811531. S2CID 16414890.
- ↑ Giguere, Matthew J.; et al. (2015). "Newly Discovered Planets Orbiting HD 5319, HD 11506, HD 75784 and HD 10442 from the N2K Consortium". The Astrophysical Journal. 799 (1). 89. arXiv: 1411.5374 . Bibcode:2015ApJ...799...89G. doi:10.1088/0004-637X/799/1/89. S2CID 56121568.
 | This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |