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HD 13189 is an 8th magnitude star in Triangulum constellation.
HD 204313 is a star with two and possibly three exoplanetary companions in the southern constellation of Capricornus. With an apparent magnitude of 7.99, it is an eighth magnitude star that is too faint to be readily visible to the naked eye. The star is located at a distance of 157 light years from the Sun based on parallax measurements, but it is drifting closer with a radial velocity of −10 km/s.
HIP 5158 is a 10th magnitude K-type main-sequence star located approximately 169 light years away in the constellation Cetus. This star is smaller, cooler, fainter, and less massive than the Sun, but it is more metal rich, having concentration of heavy elements equal to 125% of solar abundance.
HIP 70849 is a star with two non-stellar companions in the southern constellation Lupus. It is a 10th magnitude star, making it too faint to be visible to the naked eye. The system is located at a distance of 78.7 light-years from the Sun based on parallax measurements.
Gliese 676 is a 10th-magnitude wide binary system of red dwarfs that has an estimated minimum separation of 800 AU with an orbital period of greater than 20,000 years. It is located approximately 54 light years away in the constellation Ara. In 2009, a gas giant was found in orbit around the primary star, in addition to its confirmation in 2011 there was also a strong indication of a companion; the second gas giant was characterised in 2012, along with two much smaller planets.
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HR 6819, also known as HD 167128 or QV Telescopii, is a double star system in the southern constellation of Telescopium. It is in the south-western corner of the constellation, near Pavo to the south and Ara to the west. The system appears as a variable star that is dimly visible to the naked eye with an apparent magnitude that ranges from 5.32 down to 5.39, which is comparable to the maximum brightness of the planet Uranus. It is about 1,120 light years from the Sun, and is drifting farther away at a rate of 9.4 km/s. Due to its location in the sky, it is visible only to observers south of 33°N latitude.
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References
- ↑ Staff, Space.com (28 March 2012). "Ancient Alien Planets Shake Up View of Early Universe". Space.com. Space.com. Retrieved March 29, 2012.
- 1 2 3 4 5 6 7 8 9 10 11 12 "HD 16031". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved March 29, 2012.
- 1 2 3 4 5 Setiawan, J.; Roccatagliata, V.; Fedele, D.; Henning, Th.; Pasquali, A.; Rodríguez-Ledesma, M. V.; Caffau, E.; Seemann, U.; Klement, R. J. (March 2012). "Planetary companions around the metal-poor star HIP 11952" (PDF). Astronomy and Astrophysics. 540: A141. arXiv: 1208.4000 . Bibcode:2012A&A...540A.141S. doi:10.1051/0004-6361/201117826. S2CID 53700801.
- 1 2 3 4 Schneider, Jean (23 March 2012). "Notes for Star HIP 11952". Extrasolar Planets Encyclopedia. Retrieved March 29, 2012.
- 1 2 Than, Ker (26 March 2012). "Oldest Alien Planets Found—Born at Dawn of Universe". National Geographic Daily News. National Geographic. Retrieved March 29, 2012.
- ↑ O'Neill, Ian (27 March 2012). "Most ancient, 'Impossible' Alien Worlds Discovered". Discovery News. Discovery News. Archived from the original on 2 April 2012. Retrieved March 29, 2012.
- 1 2 Desidera, S; et al. (June 2013). "The GAPS programme with HARPS-N at TNG. II. No giant planets around the metal-poor star HIP 11952". Astronomy and Astrophysics. 554: 29–33. arXiv: 1302.3093 . Bibcode:2013A&A...554A..29D. doi:10.1051/0004-6361/201321155. S2CID 119202972.
- ↑ Müller, A.; Roccatagliata, V.; Henning, Th.; Fedele, D.; Pasquali, A.; Caffau, E.; Rodríguez-Ledesma, M. V.; Mohler-Fischer, M.; Seemann, U.; Klement, R. J. (2013). "Reanalysis of the FEROS observations of HIP 11952". Astronomy and Astrophysics. 556: id.A3. arXiv: 1307.5072 . Bibcode:2013A&A...556A...3M. doi:10.1051/0004-6361/201321497. S2CID 45365535.
