HD and HDE objects HD and HDE objects 47 Ursae Majoris (abbreviated 47 UMa) is a 5th magnitude yellow dwarf star in the constellation of Ursa Major. Its spectral type, G1 V, is similar to our Sun. The star is relatively nearby, distance being only 46 light years. It is visible to the unaided eye under good conditions. ...more on Wikipedia about "47 Ursae Majoris"
51 Pegasi ( Flamsteed designation, HIP 113357 in the Hipparcos Catalogue, HD 217014 in the Henry Draper Catalogue) is the name of a Sun-like star 14.7 parsecs (47.9 light-years) from Earth in the constellation of Pegasus. It was the first Sun-like star to be found to have a planet orbiting it, a discovery that was announced in 1995. ...more on Wikipedia about "51 Pegasi"
54 Piscium (abbreviated 54 Psc) is a 6th magnitude star in the constellation of Pisces. It is classified as a orange dwarf star ( spectral class K0 V) and is somewhat less massive and luminous than our Sun. The star is relatively nearby, distance being only 36 light years. It is visible to the unaided eye under very good conditions. A planet was found orbiting the star in 2003. The star is also suspected to be variable in brightness. ...more on Wikipedia about "54 Piscium"
55 Cancri (abbreviated 55 Cnc; Bayer designation ρ1 Cancri, Rho-1 Cancri) is a nearby 6th magnitude star in the constellation Cancer. The star is a binary system. The primary component is, like our Sun, a yellow dwarf, but slightly less massive and luminous. Secondary is a distant dim red dwarf. Distance to the system is 41 light years. The brighter component is visible through binoculars or to the naked eye under very dark skies. ...more on Wikipedia about "55 Cancri"
61 Cygni is a star in the constellation Cygnus. Though it is among the least conspicuous of stars visible in the night sky to an observer without an optical instrument, 61 Cygni attracted the attention of astronomers due to its large proper motion. The star is in fact a double star system. ...more on Wikipedia about "61 Cygni"
70 Virginis (also designated HD 217014 and SAO 090896, HR 5072) is a main sequence star in the constellation Virgo. It has a confirmed extrasolar planet 70 Virginis b (initially named Goldilocks), at least 6.6 Jupiter masses in size, located about 0.5 AU from the star. It is rather unusually bright for it's spectral type and may be just starting to evolve into the subgiant phase. ...more on Wikipedia about "70 Virginis"
79 Ceti (abbreviated 79 Cet) is a 7th magnitude star in the constellation of Cetus. It is a yellow subgiant ( spectral class G5 IV), a Sun-like star that has stopped hydrogen fusion in its core. This implies an age much higher than our Sun's 4.5 billion years. Eventually the outer layers of the star will expand and cool and the star will become a red giant. Currently 79 Ceti has a luminosity twice that of the Sun. ...more on Wikipedia about "79 Ceti"
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83 Leonis (83 Leo) a wide binary star system in the constellation of Leo. It consist of two orange stars cooler than our Sun. The primary is a orange subgiant star, and the secondary is orange dwarf star. In 2005 a planet was announced orbiting the secondary star. ...more on Wikipedia about "83 Leonis"
Alpha Centauri (α Cen / α Centauri) is the brightest star system (a triple star system) in the southern constellation of Centaurus, and contains the fourth brightest star in the night sky, with an apparent visual magnitude of −0.01. It is famous in the Southern Hemisphere as the outermost “pointer” to the Southern Cross, but it is too far south to be visible in most of the northern hemisphere. To the naked eye, the two brightest components of the system are too close for the eye to be able to resolve them as separate stars, so it is perceived as a single source of light with a total visual magnitude of about −0.27, which is brighter than Arcturus. ...more on Wikipedia about "Alpha Centauri"
Beta Ursae Majoris (β UMa / β Ursae Majoris) is a star in the constellation of Ursa Major. It also has the traditional name Merak. ...more on Wikipedia about "Beta Ursae Majoris"
Cygnus X-1 (often abbreviated to Cyg X-1) is an X-ray source in the constellation Cygnus, and considered to be a black hole. It is a high-mass X-ray binary, with the optical counterpart ( HDE 226868) being a variable 8.9 magnitude star (visible with good binoculars in good observing conditions.) at right ascension 19 h 56.5 min and declination of 35 deg 4 min (for 1950 epoch). ...more on Wikipedia about "Cygnus X-1"
Deneb (α Cyg / α Cygni / Alpha Cygni) is the brightest star in the constellation Cygnus and one of the brightest stars in the night sky, with apparent magnitude 1.25. ...more on Wikipedia about "Deneb"
Epsilon Eridani (ε Eri / ε Eridani) is a main-sequence K2 class star in the constellation of Eridanus. ...more on Wikipedia about "Epsilon Eridani"
Epsilon Indi (ε Ind / ε Indi) is a star approximately 11.82 light years from Earth's solar system. ...more on Wikipedia about "Epsilon Indi"
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Epsilon Reticuli (ε Ret / ε Reticuli) is a 4th magnitude star in the constellation Reticulum. The system is a binary, the primary component being an orange subgiant, and the secondary is probably a red dwarf. The primary star should be easily visible without optical aid under dark skies in southern hemisphere. ...more on Wikipedia about "Epsilon Reticuli"
Gliese 777 (GJ 777) is a 6th magnitude star in the constellation Cygnus. The system is a binary. The primary component is an yellow subgiant and the secondary component is a red dwarf. The primary component is visible to the unaided eye under very good conditions. ...more on Wikipedia about "Gliese 777"
Groombridge 1830 is a star. ...more on Wikipedia about "Groombridge 1830"
HD 101930 is a dim 8th magnitude star in the constellation of Centaurus. It is an orange dwarf ( spectral class K1 V), somewhat dimmer and cooler than our Sun. ...more on Wikipedia about "HD 101930"
HD 102117 is a yellow dwarf star ( spectral type G6 V) about 130 light years from Earth in the constellation of Centaurus. Although it is cooler than our Sun it is brighter and thus more evolved. It is orbited by a recently discovered planet. ...more on Wikipedia about "HD 102117"
HD 107146 is a G2V ( yellow dwarf) star, located 88 light years from Earth. In 2004, astronomers using the Hubble Space Telescope detected the presence of a disc of dust surrounding the star, the first time such a phenomenon has been detected around a star of similar spectral type and age as the Sun, which also had a detectable planetary system. Observations have given the age of the star at between 80 and 200 Myr. ...more on Wikipedia about "HD 107146"
HD 108147 is a 7th magnitude star in the constellation of Crux. It is either a yellow-white or yellow dwarf (the line is arbitrary and the colour difference is only from classification, not real), slightly brighter and more massive than our Sun. The spectral type is F8 V or G0 V. The star is also younger than the Sun. Due to its distance, about 130 light years, it is too dim to be visible with unaided eye; with binoculars it is an easy target. However, due to its southerly location it is not visible in the northern hemisphere except for the tropics. ...more on Wikipedia about "HD 108147"
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HD 108874 is a yellow dwarf star ( spectral type G5 V) in the constellation of Coma Berenices. It is 223 light years from Earth and has two extrasolar planets that are possibly in a 4:1 orbital resonance. ...more on Wikipedia about "HD 108874"
HD 114386 is a 9th magnitude star in the constellation of Centaurus. It is an orange dwarf, and rather dim compared to our Sun. To see it, one needs telescope or good binoculars. ...more on Wikipedia about "HD 114386"
HD 114729 is a 7th magnitude star in the constellation of Centaurus. Like our Sun, it is a yellow dwarf ( spectral type G3 V). However, it is about 10% less massive than the Sun, but still twice as bright. That indicates a much greater age, perhaps over 10,000 million years. ...more on Wikipedia about "HD 114729"
HD 114783 is an 8th magnitude star in the constellation of Virgo. As an orange dwarf it is somewhat dimmer and cooler than our Sun. The spectral type of the star is K0 V. The star is not visible with the unaided eye, but is easy target for binoculars. ...more on Wikipedia about "HD 114783"
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