ι Crucis, Latinized as Iota Crucis, is a wide double star in the southern constellation of Crux. [6] It is visible to the naked eye as a faint, orange-hued point of light with an apparent visual magnitude of 4m.69. [2] This object is located 125 light-years from the Sun, based on parallax, and is drifting further away with a radial velocity of +7.5 km/s. [1]
The primary component is an aging giant star with a stellar classification of K0 III. [3] Having exhausted the supply of hydrogen at its core, the star has cooled and expanded off the main sequence, and now has over seven times the girth of the Sun. It is radiating 24 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,824 K. [1]
The secondary is a magnitude 10.24 star at an angular separation of 29.7″ from the primary along a position angle of 2°, as of 2015. The Washington Double Star Catalog (2001) notes this is an "optical pair, based on study of relative motion of the components," [7] whereas Eggleton and Tokovinin (2008) list it as a binary system. [8] Gaia Data Release 2 gives a parallax of 1.0868±0.0391 mas for the companion, implying a distance around 1,000 pc . [9]
Iota Antliae, Latinized from ι Antliae, is a single, orange-hued star in the southern constellation of Antlia. It has an apparent visual magnitude of +4.60, making it a faint naked eye star. From parallax measurements, the distance to this star can be estimated as 202 ± 2 light-years. It is drifting further away with a radial velocity of 2 km/s.
41 Aquarii is a double star in the equatorial constellation of Aquarius. 41 Aquarii is its Flamsteed designation. It is visible to the naked eye as a dim, orange-hued point of light with a combined apparent visual magnitude of 5.354. The pair are located at a distance of around 239 light-years from the Sun based on parallax, but are drifting closer with a radial velocity of –25 km/s.
HD 94510 is a single star in the southern constellation of Carina, positioned near the northern constellation border with Vela. It has the Bayer designation u Carinae; HD 94520 is the identifier from the Henry Draper Catalogue. This object has an orange hue and is visible to the naked eye with an apparent visual magnitude that fluctuates around +3.78. The star is located at a distance of 95 light-years from the Sun based on parallax, and is drifting further away with a radial velocity of +8 km/s.
HD 69863 is a binary star system in the southern constellation of Carina. It is visible to the naked eye as a dim point of light with a combined apparent visual magnitude of 5.16. The system is located at a distance of about255 light years from the Sun based on parallax. The dual nature of this system was announced in 1832 by German astronomer Carl Rümker. As of 2015, the pair had an angular separation of 4.10″ along a position angle of 70°.
HD 96566 is a single star in the southern constellation of Carina. It has the Bayer designation z1 Carinae; HD 96566 is the identifier from the Henry Draper Catalogue. This object has a yellow hue and is visible to the naked eye with an apparent visual magnitude of +4.62. The star is located at a distance of approximately 376 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −1 km/s. It has an absolute magnitude of −0.81.
HD 81101 is a single star in the southern constellation of Carina. It has the Bayer designation k Carinae, while HD 81101 is the star's designation in the Henry Draper catalogue. The star has a yellow hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.79. It is located at a distance of approximately 225 light years from the Sun based on parallax. This object is drifting further away with a radial velocity of +51 km/s, having come to within 22 light-years of the Sun some 1.4 million years ago.
HD 116243 is a single star in the southern constellation of Centaurus. It has the Bayer designation m Centauri, while HD 116243 is the identifier from the Henry Draper catalogue. This star has a yellow hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.52. It is located at a distance of approximately 244 light years from the Sun based on parallax, and it has an absolute magnitude of 0.01. It is drifting further away with a radial velocity of +13.3 km/s.
HD 172044 is a triple star system in the northern constellation of Lyra. It has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of 5.41. The distance to the primary component is approximately 535 light years based on parallax. It is drifting closer with a radial velocity of −32.5 km/s, and is predicted to come as near as 77.3 light-years to the Sun some 4.5 million years from now.
Kappa Cephei, Latinized from κ Cephei, is a binary star system in the northern circumpolar constellation of Cepheus. It is visible to the naked eye as a faint, blue white-hued point of light with an apparent visual magnitude is 4.39. The system is located approximately 323–326 light years distant from the Sun, based on parallax.
HD 16028 is a star in the constellation Andromeda. Its apparent magnitude is 5.71. Located approximately 225 parsecs (730 ly) distant, it is an orange giant of spectral type K3III, a star that has used up its core hydrogen and has expanded.
Beta Mensae, Latinized from β Mensae, is the third-brightest star in the constellation of Mensa. Despite this, it is only faintly visible to the naked eye, appearing as a dim, yellow-hued point of light with an apparent visual magnitude of 5.31. The star is positioned near the southwest edge of the Large Magellanic Cloud, but it does not form part of this much more distant satellite galaxy. Based upon an annual parallax shift of just 4.11 mas as seen from the Earth, the star is located at a distance of roughly 790 light years from the Sun. It is moving closer with a heliocentric radial velocity of −11 km/s.
Epsilon Sagittae (ε Sagittae) is a solitary, yellow-hued star in the northern constellation of Sagitta. With an apparent visual magnitude of +5.64 to +5.67, it is faintly visible to the naked eye on a dark night. It is a variable star with a small amplitude of 0.03 magnitudes. Based upon an annual parallax shift of 5.60 mas as seen from Earth, it is located roughly 580 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.1 due to interstellar dust.
HD 102350 is a single star in the constellation Centaurus. It has a yellow hue and is visible to the naked eye with an apparent visual magnitude of 4.11. The distance to this star is approximately 390 light years based on parallax, but it is drifting closer with a radial velocity of −3 km/s. It has an absolute magnitude of −1.51.
HD 123569 is a single star in the southern constellation of Centaurus, positioned near the eastern constellation border with Lupus. This object has a yellowish hue and is visible to the naked eye with an apparent visual magnitude of 4.74. It is located at a distance of approximately 176 light years from the Sun based on parallax, and it has an absolute magnitude of +1.00. The star is drifting closer with a radial velocity of −17 km/s. O. J. Eggen flagged this star as a member of the Hyades Supercluster.
Tau1 Hydrae is a triple star system in the equatorial constellation of Hydra. Based upon the annual parallax shift of the two visible components as seen from Earth, they are located about 18 parsecs (59 ly) from the Sun. The system has a combined apparent visual magnitude of +4.59, which is bright enough to be visible to the naked eye at night.
15 Lacertae is a binary star system in the northern constellation of Lacerta, near the southeast constellation border with Andromeda. It is faintly visible to the naked eye with an apparent visual magnitude of 4.95. The distance to this system is approximately 337 light years based on parallax. It is drifting closer to the Sun with a radial velocity of −19 km/s. The absolute magnitude of 15 Lacertae is −0.04.
26 Cygni is a single star in the northern constellation of Cygnus. It has the Bayer designation e Cygni, while 26 Cygni is the Flamsteed designation. This star is visible to the naked eye as a faint, yellow-hued point of light with an apparent visual magnitude of 5.12. It is located around 451 light-years (138 pc) distant from the Sun, based on parallax measurements. The radial velocity is close to negligible, being measured at −0.3 km/s.
ν Gruis, Latinised as Nu Gruis, is a solitary, yellow-hued star in the southern constellation of Grus. It is visible to the naked eye with an apparent visual magnitude of 5.47. The distance to this star, as determined using an annual parallax shift of 11.6 mas as seen from the Earth, is 280 light years. It is drifting further away with a heliocentric radial velocity of +11 km/s.
η Microscopii, Latinised as Eta Microscopii, is a solitary star in the constellation Microscopium. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.53. The star is located around 910 light-years distant from the Sun based on parallax, and is drifting further away with a radial velocity of +22 km/s.
ξ Mensae, Latinized as Xi Mensae, is a single star in the southern circumpolar constellation of Mensa. It has a yellow-orange hue and is just barely visible to the naked eye as a dim point of light with an apparent visual magnitude of 5.84. This object is located about 366 light years away from the Sun based on parallax, but is drifting closer with a radial velocity of −5 km/s.