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ι Sculptoris, Latinized as Iota Sculptoris and abbreviated iot Scl, is a solitary star in the southern constellation of Sculptor. It is visible to the naked eye as a dim, orange-hued point of light with an apparent visual magnitude of 5.18. The star is located approximately 336 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +21 km/s.
Upsilon Aquilae, Latinized from υ Aquilae, is the Bayer designation for a star in the equatorial constellation of Aquila. With an apparent visual magnitude of +5.91 it is a faint star but visible to the naked eye from suburban skies. It has an annual parallax shift of 18.66 mas, indicating a distance of around 175 light-years. The star is drifting closer with a radial velocity of –30 km/s.
81 Aquarii is a star in the constellation of Aquarius. It has an orange hue and is barely visible to the naked eye with an apparent visual magnitude of 6.23. 81 Aquarii is its Flamsteed designation. The star is located at a distance of approximately 451 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +1.6 km/s. It is positioned near the ecliptic and thus is subject to lunar occultations.
Xi2 Canis Majoris, which is Latinized from ξ2 Canis Majoris, is an astrometric binary star system in the southern constellation of Canis Major. With an apparent visual magnitude of +4.54, it is visible to the naked eye. Based upon an annual parallax shift of 8.35 mas, the system is approximately 390 light years distant from Earth. It is receding with a radial velocity of +26 km/s.
Delta3 Canis Minoris, Latinized from δ3 Canis Minoris, is a solitary, white-hued star in the equatorial constellation of Canis Minor. Based upon a parallax of 4.46 mas as seen from Gaia spacecraft in its repeated orbits around the sun, just beyond the earth this star is about 730 light years from the solar system. At that distance, the visual magnitude of these stars is diminished by an extinction of more than 0.15 due to interstellar dust. With an apparent visual magnitude of +5.81, it is just bright enough to be faintly visible to the naked eye.
Beta Coronae Australis, Latinized from β Coronae Australis, is a solitary star located in the southern constellation Corona Australis. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of 4.10. The star is located around 470 light years distant from the Sun based on parallax, and is drifting further away with a radial velocity of 2.7 km/s. At its current distance, Beta CrA's brightness is diminished by 0.29 magnitudes due to interstellar dust.
Eta1 Coronae Australis, Latinized from η1 CrA, is a suspected astrometric binary star system in the constellation of Corona Australis. It is visible to the naked eye as a dim, white-hued point of light with an apparent visual magnitude of 5.456. Parallax measurements put it at a distance of 317 light-years away from the Sun.
HD 91496 is a giant star in the constellation Carina, with an apparent magnitude is 4.92 and an MK spectral class of K4/5 III. It has been suspected of varying in brightness, but this has not been confirmed.
9 Hydrae is a single star in the equatorial constellation of Hydra, located 205 light years away from the Sun. It is visible to the naked eye as a faint, yellow-orange hued star with an apparent visual magnitude of 4.87. This body is moving closer to the Sun with a heliocentric radial velocity of −2 km/s.
Rho Herculis is a double star in the constellation of Hercules. The apparent magnitudes of the components are 4.510 and 5.398, respectively. Parallax measurements published in Gaia Data Release 2 put the system at some 360-390 light-years away.
90 Tauri is a star in the zodiac constellation of Taurus, located 144 light-years away from the Sun. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.27. 90 Tauri is a member of the Hyades cluster and is listed as a double star.
HD 161840 is a single, blue-white hued star in the southern zodiac constellation of Scorpius. It is faintly visible to the naked eye with an apparent visual magnitude of 4.79. With an annual parallax shift of 6.5 mas it is located roughly 500 light years from the Sun. It is moving closer with a heliocentric radial velocity of −13 km/s.
Phi3 Ceti is a solitary, orange-hued star in the equatorial constellation of Cetus. It is faintly visible to the naked eye with an apparent visual magnitude of 5.31. Based upon an annual parallax shift of 6.11 mas as seen from Earth, it is located approximately 530 light years from the Sun, give or take 20 light years. The star is drifting closer with a radial velocity of −25.5 km/s.
63 Ceti is a star in the constellation of Cetus, located just over a degree south of the celestial equator. With an apparent magnitude of about 5.9, the star is barely visible to the naked eye as a dim, orange-hued point of light. Parallax estimates put it at a distance of about 390 light years away from the Earth, and it is drifting further away with a radial velocity of 28 km/s.
HD 53501, is a solitary star in the southern circumpolar constellation Volans. It has an apparent magnitude of 5.18, allowing it to be seen with the naked eye under ideal conditions. The object is located at a distance of 308 light years but is receding with a heliocentric radial velocity of 39 km/s.
HD 60150 is a solitary star located in the southern circumpolar constellation Volans. It has an apparent magnitude of 6.39, placing it near the limit for naked eye visibility. Parallax measurements place the star at a distance of 738 light years and it is currently receding with a heliocentric radial velocity of 13.4 km/s.
HD 166006, also known as HR 6778, is a solitary orange-hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.07, making it barely visible to the naked eye. Based on Gaia DR2 parallax measurements, the object is located 582 light years away. It is currently approaching the Solar System with a somewhat constrained heliocentric radial velocity of −15 km/s.
HD 22676 is a solitary star in the southern circumpolar constellation Mensa. It has an apparent magnitude of 5.67, making it faintly visible to the naked eye and is currently located at a distance of 333 light years. However, it is recceding from the sun with a radial velocity of 18.4 km/s.
HD 36848 is a star in the southern constellation Columba. It has an apparent magnitude of 5.46, allowing it to be faintly seen with a naked eye. The star is relatively close at a distance of 174 light years and is moving closer with a heliocentric radial velocity of only −0.6 km/s.
HD 194612 is a solitary orange hued star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.9, making it visible to the naked eye under ideal conditions. Parallax measurements place it at a distance of 760 light years and it has a low heliocentric radial velocity of 0.3 km/s.
References
- 1 2 3 4 5 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 .
- 1 2 Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
- 1 2 Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
- 1 2 Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
- 1 2 Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Carnegie Institute Washington D.C. Publication. Bibcode:1953GCRV..C......0W.
- 1 2 3 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.
- ↑ Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy & Astrophysics (Third ed.). 367 (2): 521–24. arXiv: astro-ph/0012289 . Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. S2CID 425754.
- ↑ "1 Cet". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved December 21, 2018.
- ↑ Darling, David. "Red giant". The Internet Encyclopedia of Science. Retrieved 21 March 2017.
- ↑ Keenan, Philip C. (1987). "Spectral types and their uses". Publications of the Astronomical Society of the Pacific. 99: 713. Bibcode:1987PASP...99..713K. doi: 10.1086/132036 .
- ↑ Janes, K. A.; McClure, Robert D. (May 1971). "Strong-Cyanogen Stars: Photometry and Kinematics". Astrophysical Journal. 165: 561. Bibcode:1971ApJ...165..561J. doi:10.1086/150921.
