HD 136118 b is a brown dwarf located approximately 171 light-years away in the constellation of Serpens Cauda. This object had a minimum mass of 11.9 times that of Jupiter. Due to its high mass the planet is likely to be very hot and possibly glowing faintly. The lower limit on its mass is only slightly less than the deuterium burning threshold that some astronomers use to distinguish between planets and brown dwarfs. Depending on the inclination of its orbit, the true mass could be above this limit. The orbit of the object is located at the average distance of 1.45 astronomical units from the parent star, taking 40 months to complete one eccentric orbit.On November 25, 2009, its inclination was calculated to be 163.1° and its true mass 42 times that of Jupiter, classifying this as a brown dwarf.

newline

HD 128311 or HN Boötis is an orange main-sequence star located approximately 54 light-years away in the constellation of Boötes. Two extrasolar planet candidates have been detected in orbit around this star.

HD 134064 B

HD 13931 is an 8th magnitude G-type star located approximately 144 light years away in the constellation Andromeda. This star is larger, hotter, brighter, and more massive than our Sun. Also its metal content is about 8% greater than the Sun. In 2009, a very long-period gas giant planet was found in orbit around the star.

Fischer "et al."

HD 126614 is a 9th magnitude trinary star located approximately 240 light years away in the constellation Virgo. HD 126614 A is a K-type star while HD 126614 B and NLTT 37349 are M-type stars. Star A is larger, cooler, brighter, and more massive than our Sun. Also its metal content is 3.6 times as much as the Sun, the highest metallicity planet-hosting star discovered in 2009.

A4V

HD 129116, also known by its Bayer designation b Centauri (b Cen), is a star in the constellation Centaurus.b Centauri is a blue-white B-type main sequence dwarf with an apparent magnitude of +4.01. It is approximately 339 light years from Earth.

HD 12661 is a G-type main sequence star in the northern constellation of Aries. The star is slightly larger and more massive than the Sun, with an estimated age of seven billion years. It has two known extrasolar planets.

HD 136418b

Pepe et al.

HD 1280

HD 12661 c is a giant exoplanet one and a half times the mass of Jupiter orbiting around HD 12661.

Vogt et al.

HD 126141 is a suspected variable star in the northern constellation of Boötes.

California, United States

none

HD 134064 is a binary star system in the northern constellation of Boötes. The pair are separated by a distance of around 8,000 AU.

California

HD 130458 is a double star in the southern circumpolar constellation of Apus. The pair have an angular separation of 2.167″.

HD 130948 or HP Boötis is a variable star with 2 brown dwarfs in the constellation Boötes. It has a stellar classification of G1V, which means it is a main sequence star with a mass and surface temperature that are similar to the Sun. The estimated age of this star is also similar to the Sun at 4.7 billion years (Gyr) old, but it has a lower proportion of elements (63%) other than hydrogen or helium. However, a separate study in 2009 gave a much younger age of 0.5 ± 0.3 Gyr and a higher metallicity that is very similar to the Sun.In 2002 a pair of co-orbiting brown dwarfs were discovered in orbit around this star. They were found using an adaptive optics instrument on the Gemini North 8m telescope in Hawaii. The pair have a 10-year orbital period about the primary star, and their combined mass is 10.9% of the Sun's mass.The space velocity components of this star through the Milky Way galaxy are (U, V, W) = (−14.0, 14.7, −0.1).

F5IV

HD 129357 is a G-type star in the constellation Boötes that is located about 154 light years from the Sun. The measured properties of this star are very similar to those of the Sun, making it a candidate solar twin. However, it has a lower abundance of lithium than the Sun and appears over 3 billion years older, so it may instead be a solar analog. It was suggested by astronomer Olin Eggen that this star is a member of the Wolf 630 moving group of stars that share a common motion through space. The space velocity components of HD 129357 are (U, V, W) = (+21.3, −36.3, −32.0).

A7Vn + F0

HD 130084, also known as HR 5510, is a variable red giant star in the constellation Boötes. Located around 810 light-years distant, it shines with a luminosity approximately 569 times that of the Sun and has a surface temperature of 3854 K.

HD 129445 b

K0V

HD 134064 A

HD 133002 is the Henry Draper Catalogue designation for a star in the northern constellation of Ursa Minor. With an apparent visual magnitude of 5.65, it is faintly visible to the naked eye. (According to the Bortle scale, it can be viewed from dark rural skies.) The high declination of +82.5° means it is hidden from view from most of the southern hemisphere. Parallax measurements made with the Hipparcos spacecraft yield an estimated distance of around 141 light years from the Sun.

G0V

HD 12661c

HD 131664 is an 8th magnitude G-type main sequence star located approximately 181 light-years away in the constellation of Apus.On October 26, 2008, a brown dwarf was discovered along with five other planets (BD-17°63 b, HD 145377 b, HD 153950 b, HD 73267 b, and HD 20868 b). This brown dwarf has mass of at least 18.15 times that of Jupiter and orbits in a long-period, eccentric orbit.

HD 128093 is a double star in the constellation Boötes. The brighter component is an F-type main sequence star with a stellar classification of F5V and an apparent magnitude of 6.33. It has a magnitude 11.33 companion at an angular separation of 28.1 along a position angle of 318°.

HD 132406b

show

HD 131473 B

HD 136118 b is a brown dwarf located approximately 171 light-years away in the constellation of Serpens Cauda. This object had a minimum mass of 11.9 times that of Jupiter. Due to its high mass the planet is likely to be very hot and possibly glowing faintly. The lower limit on its mass is only slightly less than the deuterium burning threshold that some astronomers use to distinguish between planets and brown dwarfs.

M1IIIb

G2V

Arriagada et al.

HD 138573 is G-type main-sequence star in the constellation Serpens, class G5IV-V, roughly 100.8 light years from Earth (30.912 parsecs). Though a G type star like the Sun, a 2005 study found that it is not a solar twin as HD 138573 has a much lower mass, lower metallicity, and is much older age than the Sun at 5.6 billion years old. HD 138573 is otherwise close to the Sun's characteristics and could be classed as a Solar analog.

F0V + F2V

A3Vnn

HD 134060 c

HD 136352 d

G8V

HD 134606 is a class G6IV (yellow subgiant) star in the constellation Apus. Its apparent magnitude is 6.85 and it is approximately 86.4 light years away based on parallax. Radial velocity studies indicate there are 3 planets: b (mass 0.0292 MJ, period 12.083d), c (mass 0.0382 MJ, period 59.519d), and d (mass 0.121 MJ, period 459.26), the planets successively larger as they are further away from the star.

Published

HD 131399Ab

HD 12661 c

yes

HD 134335 is a giant star in the northern constellation of Boötes.

G1V

Howard et al.

Butler et al.

HD 129445 is a G type star found in the Circinus constellation located approximately 210 light-years away from the Earth. The star has been under the Magellan Planet Search Program observation due to its absolute visual magnitude and metallicity. The Magellan program conducted 17 doppler velocity tests which spans a full orbital period. The results led the program to detect a planet dubbed HD 129445 b whose readings was accurate to the Keplerian orbital model.

HD 130322 is an 8th magnitude star in the constellation of Virgo. It is an orange dwarf, a type of star somewhat dimmer and cooler than our Sun. Spectral type of the star is K0V. It can only be seen with binoculars or telescope. Being almost exactly on the celestial equator the star is visible everywhere in the world except for the North Pole.

HD 128198 is a giant star in the northern constellation of Boötes.

HD 137388 is a class K2IV (orange subgiant) star in the constellation Apus. Its apparent magnitude is 8.70 and it is approximately 128 light years away based on parallax.It has a surface temperature of 5182 K and is 47% as luminous and 88% as massive as the Sun, with 85% of its diameter, and is thought to be around 7.4 ± 3.9 billion years old.Radial velocity studies indicate that it has a planet, b (mass 0.223 MJ, period 330d). It orbits at an average distance of 0.89 AU.

M3III

Hatzes et al.

G6V

K1II-III

HD 133683 is a yellow-white bright giant or supergiant star in the southern constellation of Triangulum Australe. It has an apparent magnitude of +5.77. It is 1,851 parsecs or 6,037 light-years away. This distance gives it an absolute magnitude of -5.57.

HD 130322b

HD 130144 (or EK Boötis) is a semiregular variable star in the northern constellation of Boötes. The variation in luminosity has an amplitude of 0.38 in magnitude with no apparent periodicity. This is an X-ray source, and was possibly the first M-type giant star to have a magnetic field directly detected. It is considered to be a single star, although there is nearby companion at an angular separation of 0.2023″ along a position angle of 82.2° (as of 2010.4812).

HD 128311 b

HD 132563 is a triple star system in the constellation Boötes. The two resolvable components of this system are designated HD 132563A and HD 132563B. The primary star, HD 132563A, is actually a spectroscopic binary with a period of more than 15 years and an orbital eccentricity of greater than 0.65.

HD 137509, also known as NN Apodis, is a class B9p star in the constellation Apus. Its apparent magnitude is 6.87 and it is approximately 640 light years away based on parallax. It shines with a luminosity approximately 111 times that of the Sun and has a surface temperature of 12804 K. It has one of the strongest magnetic fields recorded for a chemically peculiar star.

HD 134987 c

HD 131473 A

HD 13189 is an 8th magnitude star in Triangulum constellation.In 2005, a planetary companion or brown dwarf was announced in orbit around this star. At the time, the parallax estimate was 0.54 ± 0.93 mas, which would suggest a distance of 6,040 ly (1,850 pc) with a high margin of error.

HD 131040 is a double star in the northern constellation of Boötes. The brighter component is a subgiant star that varies slightly in luminosity by 0.04 in magnitude. The magnitude 9.64 companion lies at an angular separation of 15.2″ along a position angle of 93°.

ADS 9247 ABC, WDS J14234+0827A,BC

F9V

K4 III

HD 130603 is a double star in the northern constellation of Boötes. As of 2010.476, the components have an angular separation of 2.06″ along a position angle of 54.7°.

HD 132563 B

HD 129445b

HD 128311 b is an exoplanet located approximately 54 light-years away in the constellation of Boötes. This planet orbits in an eccentric orbit about 1.1 AU from its star (HD 128311). The planet has minimum mass 2.19 Jupiter masses.

HD 128311b

HD 132029 is a star in the northern constellation of Boötes. It forms a double star with a magnitude 10.2 companion at an angular separation of 4.6″ along a position angle of 110° (as of 2010).

G6 V

HD 139357b

HD 12661 b

HD 133002 A

HD 128311 c is an exoplanet located approximately 54 light-years away in the constellation of Boötes. This planet orbits in an eccentric orbit at 1.76 AU from its star (HD 128311). The planet has minimum mass 3.22 Jupiter masses.

HD 126271 is a suspected variable star in the northern constellation of Boötes.

HD 128333 or CH Boötis is an irregular variable star in the northern constellation of Boötes. It is currently on the asymptotic giant branch of the HR diagram.

HD 127304 is a double star in the northern constellation of Boötes. The brighter component is a sixth magnitude A-type main sequence star with a stellar classification of A0Vs It has a faint magnitude 10.62 companion at an angular separation of 25.6″ along a position angle of 256° (as of 2013).

HD 130322 b is an exoplanet with a minimum mass slightly more than that of Jupiter. It orbits the star in a very close orbit distance being only a quarter that of Mercury from the Sun. It is thus a so-called "hot Jupiter". The planet orbits the star every 10 days 17 hours in a very circular orbit.

HD 133002 B

HD 126009 or CI Boötis is a variable star in the northern constellation of Boötes.

b Centauri

HD 131551 is a star in the southern constellation of Apus. There is a 13th magnitude companion star at an angular separation of 34.5″ along a position angle of 123° (as of 2000).

F5V

HD 136118 b

Submitted

HD 134060, also known by its Gould designation of 38 G. Circini, is a sun-like yellow dwarf star of spectral type G0VFe+0.4 and apparent magnitude 6.29 which lies around 79 light years away.

HD 1326

HD 127726 is a binary star system in the northern constellation of Boötes.

HD 13931 b

HD 132563 A

F9 V

HD 136352 b

HD 132563 is a triple star system in the constellation Boötes. The two resolvable components of this system are designated HD 132563A and HD 132563B. The primary star, HD 132563A, is actually a spectroscopic binary with a period of more than 15 years and an orbital eccentricity of greater than 0.65. The smaller member of this tightly orbiting pair has about 55% the mass of the Sun.Based upon radial velocity variations of HD 132563B, the presence of an ordinary giant planet has been inferred by S. Desidera et al. (2011). This object is orbiting the star with a period of 1,544 days, at a distance of about 2.6 AU, and with an orbital eccentricity of 0.22.
F8 V/G0 V

G3V

HD 129132 is a spectroscopic binary in the constellation Boötes. The stars orbit each other every 9.27 years.

K4III

K2IV

B3V

A0V

HD 13931 b (also known as HIP 10626 b) is an extrasolar planet which orbits the G-type star HD 13931, located approximately 144 light years away in the constellation Andromeda. This planet takes 11.55 years to orbit the star at the average distance of 5.15 AU or 770 Gm. The planet’s eccentricity (0.02) is about the same as Earth. The orbital distance for this planet ranges from 5.05 to 5.25 AU. This planet was discovered by using radial velocity method from spectrograph taken at Keck Observatory on November 13, 2009.

HD 126614 Ab

K0 / M

HD 132406 b is a long period massive gas giant extrasolar planet orbiting the Sun-like star HD 132406.HD 132406 b has at least 5.61 times the mass of Jupiter. The orbital distance from the star is almost twice that of from Earth to the Sun. The orbital period is 2.7 years.

HD 139357 is a 6th magnitude K-type giant star located approximately 390 light years from Earth, visible in the constellation Draco. Its mass is four thirds that of our Sun but its radius is 11.47 times larger. However, despite being a giant star, it is only 3.07 billion years old, which is younger than our Sun.It hosts a planet discovered in 2009.

HD 126614 Ab, or simply HD 126614 b, (also known as HIP 70623 b) is an extrasolar planet which orbits the primary K-type star HD 126614 A, located approximately 240 light years away in the constellation Virgo. It was discovered on November 13, 2009. However, this planet has a highly eccentric orbit around its parent star. The planetary distance ranges from 0.94 AU to 3.61 AU. HD 126614 A also has the highest metallicity of any star hosting any exoplanets, at +0.56 dex.

HD 129357 is a G-type star in the constellation Boötes that is located about 154 light years from the Sun. The measured properties of this star are very similar to those of the Sun, making it a candidate solar twin. However, it has a lower abundance of lithium than the Sun and appears over 3 billion years older, so it may instead be a solar analog. It was suggested by astronomer Olin Eggen that this star is a member of the Wolf 630 moving group of stars that share a common motion through space.

M5III

M1III

HD 136352d

HD 133002 is the Henry Draper Catalogue designation for a star in the northern constellation of Ursa Minor. With an apparent visual magnitude of 5.65, it is faintly visible to the naked eye. (According to the Bortle scale, it can be viewed from dark rural skies.) The high declination of +82.5° means it is hidden from view from most of the southern hemisphere. Parallax measurements made with the Hipparcos spacecraft yield an estimated distance of around 141 light years from the Sun. If it was instead positioned at a distance of 33 ly (10 pc), this would be a second magnitude star.This is an F-type main sequence star with a stellar classification of F9 V. It is estimated to have 51% greater mass than the Sun, and is younger with an age of around 2.8 billion years. The projected rotational velocity along the star's equator is a relatively leisurely 5.2 km/s. The star is considered a photometric solar analog, although it is deficient in elements more massive than helium when compared to the Sun. The chemical composition and relatively low surface gravity for a star of its classification suggest that this may instead be a subgiant star that is in the process of evolving away from the main sequence. The effective temperature of the star's photosphere is 5,461 K, giving it the yellow-white hue of an F-type star.This star has been examined for evidence of an infrared excess, but none was detected. During a 2006−2007 survey of nearby stars, it was discovered that HD 133002 has a low-mass common proper motion stellar companion. This object has an estimated 15% of the Sun's mass. It has a projected separation of around 80 AU from the primary, which suggests an orbital period of roughly 700 years. At present, there is insufficient observational data available to determine orbital elements.

G6IV

B9p

HD 13931b

HD 132406 b

HD 134060b

HD 130948 or HP Boötis is a variable star with 2 brown dwarfs in the constellation Boötes. It has a stellar classification of G1V, which means it is a main sequence star with a mass and surface temperature that are similar to the Sun. The estimated age of this star is also similar to the Sun at 4.7 billion years (Gyr) old, but it has a lower proportion of elements (63%) other than hydrogen or helium.

HR 5385

HD 12661 b is a giant exoplanet two and a half times the mass of Jupiter orbiting around the star HD 12661.

G7IIIa + F9IV

HD 135438 is a K-type giant star in the northern constellation of Boötes. It has a magnitude 9.36 companion at an angular separation of 118.2″ along a position angle of 158° (as of 2012).

Fischer et al.

F2V

HD 126128/9 is a triple star in the northern constellation of Boötes. Two of the components (HD 126128) form a binary star system with an orbital period of 39.5 years and an eccentricity of 0.25. The third component (HD 126129), and the brightest member of the trio, lies at an angular separation of 6.250″ from the other two.

HD 136418 b is an extrasolar planet orbiting the G-type star HD 136418 approximately 320 light years away in the constellation Boötes It has a notable orbit, staying within the known Habitable zone. It also has a star very similar in temperature as the sun.

HD 13189 b

HD 126614 b

HD 134060c

HD 13931 b (also known as HIP 10626 b) is an extrasolar planet which orbits the G-type star HD 13931, located approximately 144 light years away in the constellation Andromeda. This planet takes 11.55 years to orbit the star at the average distance of 5.15 AU or 770 Gm. The planet’s eccentricity (0.02) is about the same as Earth. The orbital distance for this planet ranges from 5.05 to 5.25 AU.

HD 13189 is an 8th magnitude star in Triangulum constellation.In 2005, a planetary companion or brown dwarf was announced in orbit around this star. At the time, the parallax estimate was 0.54 ± 0.93 mas, which would suggest a distance of 6,040 ly (1,850 pc) with a high margin of error. In 2007, van Leeuwen published a revised parallax measurement of 1.78 ± 0.73, which corresponds to a distance of 1,830 ly (560 pc) with a smaller but still significant margin of error.It has a spectral classification of K1II-III, making it a giant star that has evolved away from the main sequence. The mass is 2–7 times the Sun, while measurements of the star's radius give estimates of 45.5 or 50.4 solar radii. This mass range is typical of a B-type main sequence star, suggesting the star belong to stellar class B when it was on the main sequence. The atmosphere of the star displays short period radial velocity variations with a primary period of 4.89 days. This behavior is typical for giant K-type stars such as this and it is not the result of a close-orbit planetary companion.The star is possibly the most massive of all planet-harboring stars although the star Epsilon Tauri is potentially more massive.

HD 134987 b

HD 136118 is a F-type main-sequence star located approximately 171 light-years away in the constellation of Serpens Cauda. It is an F-type dwarf and has apparent magnitude +6.94.

K1III

This planet is an eccentric Jupiter gas giant discovered by the Magellan Planet Search Program in 2010.

HD 128311c

HD 130322 b

HD 134060 b

F6II

HD 131473 is a binary star system in the northern constellation of Boötes. The primary is an F-type main sequence star with a stellar classification of F9V.

HD 128311 c

HD 130917 is a single star in the northern constellation of Boötes. It is an A-type main sequence star with a stellar classification of A4V. At an apparent magnitude of 5.80, it is visible to the naked eye.

HD 136352c

G0VFe+0.4

A0Vs

B9V

HD 131664 is an 8th magnitude G-type main sequence star located approximately 181 light-years away in the constellation of Apus.On October 26, 2008, a brown dwarf was discovered along with five other planets (BD-17°63 b, HD 145377 b, HD 153950 b, HD 73267 b, and HD 20868 b). This brown dwarf has mass of at least 18.15 times that of Jupiter and orbits in a long-period, eccentric orbit. Follow-up studies with the Hipparcos satellite adjusted the predicted mass of the companion to 23 times that of Jupiter (minimum of 18 and maximum of 49 Jovian masses).

HD 136352b

HD 131664 b

HD 132406 is a star in Boötes constellation. The spectrum is G0V, apparent magnitude +8.45, and the stellar distance 221 ly (68 pc).The star is 100K hotter, 1.8 Gya older, and 1.5 times more enrich in heavy elements [Fe/H] than our Sun.The star is unusual since it has one known planet, HD 132406 b, as of 2007.

A2V

HD 135530 is a suspected variable star in the northern constellation of Boötes.

HD 136352 c

M2IIIa

HD 135944 is a star in the northern constellation of Boötes. With an apparent magnitude of 6.5, it is at the limits of naked eye visibility. There is a magnitude 8.94 companion at an angular separation of 67.3″ along a position angle of 102° (as of 2011).

HD 131664b

BD+00°3243, HIP 72339, LTT 5873, NLTT 38386

HD 12661b

Da Silva et al.

HD 136418 b