[67], Also discovered through the radial velocity method, albeit a year earlier, is HD 136418 b, a 2-Jupiter mass planet that orbits the star HD 136418 at a distance of 1.32 AU with a period of 464.3 days. [70] WASP-14 b has a density of 4.6 grams per cubic centimeter, making it one of the densest exoplanets known. For the astronomical observatory, see, "The Celestial River: Identifying the Ancient Egyptian Constellations", "What's 250 Million Light-Years Big, Almost Empty, and Full of Answers? [8] The two components are separated by 13.4 arcseconds, at an angle of 236 degrees. [105] The meteor stream is associated with three different asteroids: 1620 Geographos, 2062 Aten, and 1978 CA. [40], Kappa Boötis is another wide double star. Location Izar is relatively easy to find because it is one of the bright stars that form the kite-shaped pattern of Boötes.

[71] Its fairly large diameter means that it has a low surface brightness, so it appears far dimmer than the catalogued magnitude of 9.1 and requires a large amateur telescope to view. The other Chinese constellations made up of the stars of Boötes existed in the modern constellation's north; they are all representations of weapons. [62] It has a mass of 1.09 M☉ and a radius of 1 R☉. [2] Based upon parallax measurements, it is located at a distance of approximately 160 light-years (49 parsecs) from Earth. The secondary is itself an eclipsing variable star with a range of 0.6 magnitudes; its orbital period is 6.4 hours.

Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye. [83] The radiant is located in northern Boötes near Kappa Boötis,[84] in its namesake former constellation of Quadrans Muralis.

Another northern constellation was Qigong, the Seven Dukes, which mostly straddled the Boötes-Hercules border. Rho Boötis, Latinized from ρ Boötis, is a single, orange-hued star in the northern constellation of Boötes.It is visible to the naked eye with an apparent visual magnitude of 3.59. Boötes is home to the Quadrantid meteor shower, the most prolific annual meteor shower. The proper motion of ρ Boötis is for the next 1000 years is represented with the red arrow. [92] Its meteors are slow-moving, with a velocity of 20.9 kilometers per second. These stars are somewhat similar to Cepheid variables, but they do not have the same relationship between their period and luminosity. The parent star, technically HD 132563B, is a star of magnitude 9.47, 96 parsecs from Earth. HD 132563B b is one of very few planets found in triple star systems; it orbits the isolated member of the system, which is separated from the other components, a spectroscopic binary, by 400 AU. It is larger than the Sun, with a mass of 1.26 M☉ and a radius of 1.59 R☉. [33] It is a Delta Scuti variable, ranging between magnitudes 3.02 and 3.07 every 7 hours. The predictions of a shower less spectacular than the 1998 showing were borne out in a display that had a maximum zenithal hourly rate of 16–20 meteors per hour that night. ρ Boötis visual magnitude is 3.58. Bootes' golden wain. The three-letter abbreviation for the constellation, as adopted by the International Astronomical Union in 1922, is "Boo". Arcturus was given such importance in Chinese celestial mythology because of its status marking the beginning of the lunar calendar, as well as its status as the brightest star in the northern night sky.

The host star itself is a magnitude 4.5 star of type F7V, 15.6 parsecs from Earth. The June Bootids, also known as the Iota Draconids, is a meteor shower associated with the comet 7P/Pons-Winnecke, first recognized on May 27, 1916, by William F. Quadrans Muralis, the Quadrant, was a constellation created near Beta Boötis from faint stars. [11], Another myth associated with Boötes by Hyginus is that of Icarius, who was schooled as a grape farmer and winemaker by Dionysus.

[62] HD 132406 orbits 1.98 AU from its host star with a period of 974 days and has a mass of 5.61 MJ. His Arctic charge around the Pole. [10], Following another reading, the constellation is identified with Arcas and also referred to as Arcas and Arcturus, son of Zeus and Callisto. situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. [18] The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, are defined by a polygon of 16 segments. [53], T Boötis was a nova observed in April 1860 at a magnitude of 9.7. [3] Boötes may have been represented by the animal foreleg constellation in ancient Egypt, resembling that of an ox sufficiently to have been originally proposed as the "foreleg of ox" by Berio. In Yup'ik language, Boötes is Taluyaq, literally "fish trap," and the funnel-shaped part of the fish trap is known as Ilulirat. The constellation Zhouding, a bronze tripod-mounted container used for food, was sometimes cited as the stars 1, 2, and 6 Boötis.

It is smaller than Jupiter, at 0.884 MJ and 0.962 RJ. The star is radiating 132[5] times the Sun's luminosity from its enlarged photosphere at an effective temperature of about 4,300 K.[5], In Chinese, 梗河 (Gěng Hé), meaning Celestial Lance, refers to an asterism consisting of ρ Boötis, ε Boötis and σ Boötis. [36], Mu Boötis, known as Alkalurops, is a triple star popular with amateur astronomers. It is 9 times as luminous as the Sun and has 2.7 times its diameter. In the meantime Callisto had been transformed into a she-bear by Zeus's wife Hera, who was angry at Zeus's infidelity. [68], WASP-14 b is one of the most massive and dense exoplanets known,[69] with a mass of 7.341 MJ and a radius of 1.281 RJ. [110] The average Rho Bootid has an entry velocity of 43 km/s. the following (all times relative to the local timezone Europe/London): The image below is a photograph of ρ Boötis from the Digitized Sky Survey 2 (DSS2 - see [90], On April 28, 1984, a remarkable outburst of the normally placid Alpha Bootids was observed by visual observer Frank Witte from 00:00 to 2:30 UTC. HD 128311 is the host star for a two-planet system, consisting of HD 128311 b and HD 128311 c, discovered in 2002 and 2005, respectively. [69] Its host star, WASP-14, is an F5V-type star of magnitude 9.75, 160 parsecs from Earth. [28] Muphrid and Arcturus lie only 3.3 light-years away from each other. ρ Boötis is distant

Tau Boötis is orbited by a large planet, discovered in 1999. It may have been placed entirely in Boötes, on either side of the Boötes-Virgo border, or on either side of the Virgo-Libra border.

Viewed from Arcturus, Muphrid would have a visual magnitude of -2½, while Arcturus would be around visual magnitude -4½ when seen from Muphrid.

Though named for a star in Boötes, the Phi Bootid radiant has moved into Hercules.

[17], Boötes is a constellation bordered by Virgo to the south, Coma Berenices and Canes Venatici to the west, Ursa Major to the northwest, Draco to the northeast, and Hercules, Corona Borealis and Serpens Caput to the east. information about the ρ Boötis double sysyem: Your guide to the Solar System and the night sky. the Hertzsprung–Russell diagram. ρ Boötis is a visual double star [13][40] To the naked eye, Izar has a magnitude of 2.37. It is now dormant. [35], Delta Boötis is a wide double star with a primary of magnitude 3.5 and a secondary of magnitude 7.8.

[2] Covering 907 square degrees, Boötes culminates at midnight around 2 May and ranks 13th in area.

The secondary is 196 light-years away and has a magnitude of 6.6. Denning. Boötes. If you find this website useful please consider a small donation that will help covering hosting costs. [66] Its orbit is somewhat elliptical, with an eccentricity of 0.22. [13] Fifty million light-years from Earth, NGC 5248 is a member of the Virgo Cluster of galaxies; it has dim outer arms and obvious H II regions, dust lanes, and young star clusters. [13] The secondary and tertiary stars are separated by 2 arcseconds; the primary and secondary are separated by 109.1 arcseconds at an angle of 171 degrees.[39]. It has a spectral class of B9 and is 40 parsecs from Earth.