[19] The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, are defined by a polygon of 22 segments (illustrated in infobox).
If you wandered the Seattle Auto Show you might have seen an Ursa Minor Transit Connect at the Ride and Drive. In classical antiquity, the celestial pole was somewhat closer to Beta Ursae Minoris than to Alpha Ursae Minoris, and the entire constellation was taken to indicate the northern direction.
Its parent body is the comet 8P/Tuttle. Polaris (Alpha Ursae Minoris), at the end of the Little Dipper’s handle, marks (roughly) the
Others have suggested that an archaic interpretation of Ursa Major was that of a cow, forming a group with Bootes as herdsman, and Ursa Minor as a dog. The real insight is….
Around 1.5 billion years old, it has cooled and expanded since it was an A-type main sequence star.
Jeep Wrangler with Ursa Minor J30. [73], The Ursids, a prominent meteor shower that occurs in Ursa Minor, peaks between December 18 and 25.
The Drive recently featured a write up by Caleb Jacobs on Dan Grec's trip around Africa in his J30 equipped Jeep Wrangler.
Just over 3.5 degrees from the north celestial pole, Delta is a white main-sequence star of spectral type A1V with an apparent magnitude of 4.35,[40] located 172±1 light-years from Earth.
Located 860 ± 80 light-years distant,[37] it is an orange giant of spectral type K5III that has expanded and cooled off the main sequence, and has an estimated diameter around 4.8 times that of the Sun.
H1504+65 is a faint (magnitude 15.9) star that with the hottest surface temperature—200,000 K—yet discovered for a white dwarf. It is a triple star system, the supergiant primary star having two yellow-white main-sequence star companions that are 17 and 2,400 astronomical units (AU) distant and take 29.6 and 42,000 years respectively to complete one orbit. The ancient name of the constellation is Cynosura (Greek Κυνοσούρα "dog's tail"). It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations.
Or more specifically 130.9±0.6 light-years by parallax measurement.
Ursa Minor has traditionally been important for naviga… [17] The four stars constituting the bowl of the Little Dipper are of second, third, fourth, and fifth magnitudes, and provide an easy guide to determining what magnitude stars are visible, useful for city dwellers or testing one's eyesight.
For the best experience on our site, be sure to turn on Javascript in your browser.
100% "We are having fun with the ECamper.
[8] [52] It is a semidetached system, as the secondary star is filling its Roche lobe and transferring matter to the primary.
Brown (1899) suggested a non-Greek origin of the name (a loan from an Assyrian An‑nas-sur‑ra "high-rising"). Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the North American name, Little Dipper: seven stars with four in its bowl like its partner the Big Dipper.
Kochab and magnitude 3 Gamma Ursae Minoris have been called the "guardians of the pole star". "We are having fun with the ECamper. [1] Its position in the far northern celestial hemisphere means that the whole constellation is only visible to observers in the northern hemisphere. NGC 3172 (also known as Polarissima Borealis) is a faint, magnitude 14.9 galaxy that happens to be the closest NGC object to the North Celestial Pole.
Full Catalog View all. It has an apparent magnitude of 11.9 and is approximately 200,000 light years distant.
[35] A yellow-white main-sequence star of spectral type F5V, it is 97 light-years distant. [63] A further study published in 2012 showed that it has a companion around 2.7 times as massive as Jupiter that takes around 16 years to complete an orbit and is 6.8 AU distant from its Sun. For other uses, see, The 41 additional constellations added in the 16th, 17th and 18th centuries, The position of the north celestial pole moves in accordance with the Earth's.
[43] A yellow giant of spectral type G5III,[43] the primary is an RS Canum Venaticorum variable star. [15] Within the constellation's borders, there are 39 stars brighter than or equal to apparent magnitude 6.5. [65] Its centre is around 225000 light-years distant from Earth. It has a planet 4.5 times the mass of Jupiter with one of the most eccentric planetary orbits (with an eccentricity of 0.66), discovered by precisely measuring the radial velocity of the star in 2013.
[50] The combined spectrum of the system is A2V, but the masses of the two component stars are unknown. [56] Ursa Minor has two enigmatic white dwarfs. [51] RU Ursae Minoris is another example, ranging from 10 to 10.66 over 0.52 days. [25] Slightly variable over a period of 4.6 days, Kochab has had its mass estimated at 1.3 times that of the Sun via measurement of these oscillations. It is likely to have been a B3 main-sequence star and is now slightly variable.
It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. [61] HD 120084 is another evolved star, this time a yellow giant of spectral type G7III, around 2.4 times the mass of the Sun.
[45] Located south of Kochab and Pherkad towards Draco is RR Ursae Minoris,[3] a red giant of spectral type M5III that is also a semiregular variable ranging from magnitude 4.44 to 4.85 over a period of 43.3 days. [66] In 1999, Kenneth Mighell and Christopher Burke used the Hubble Space Telescope to confirm that it had a single burst of star formation that lasted around 2 billion years that took place around 14 billion years ago,[67] and that the galaxy was probably as old as the Milky Way itself.[68].
Around 390 light-years distant, it shines with an apparent magnitude of 5.04. [9][a] Its New Latin name of stella polaris was coined only in the early modern period. [42], Located close to Polaris is Lambda Ursae Minoris, a red giant of spectral type M1III. Ursa Minor, (Latin: “Lesser Bear”) in astronomy, a constellation of the northern sky, at about 15 hours right ascension and 80° north declination, and seven of whose stars outline the Little Dipper. Read more. Ursa Minor (Latin: "Lesser Bear", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the Northern Sky. There are various proposed explanations for the name Cynosura.
Ursa Minor has traditionally been important for navigation, particularly by mariners, because of Polaris being the north pole star. [70] It has been characterized as a starburst galaxy, which means it is undergoing a high rate of star formation compared to a typical galaxy.
Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the North American name, Little Dipper: seven stars with four in its bowl like its partner the Big Dipper. [58] WISE 1506+7027 is a brown dwarf of spectral type T6 that is a mere 11.1+2.3−1.3 light-years away from Earth. NGC 6217 is a barred spiral galaxy located some 67 million light-years away,[69] which can be located with a 10 cm (4 in) or larger telescope as an 11th magnitude object about 2.5° east-northeast of Zeta Ursae Minoris. [35] Nearby Zeta lies 5.00-magnitude Theta Ursae Minoris. 勾陳 Gòuchén (Curved Array) (including α UMi, δ UMi, ε UMi, ζ UMi, η UMi, θ UMi, λ UMi) and [46] T Ursae Minoris is another red giant variable star that has undergone a dramatic change in status—from being a long period (Mira) variable ranging from magnitude 7.8 to 15 over 310–315 days to a semiregular variable.
[19] The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, are defined by a polygon of 22 segments (illustrated in infobox).
If you wandered the Seattle Auto Show you might have seen an Ursa Minor Transit Connect at the Ride and Drive. In classical antiquity, the celestial pole was somewhat closer to Beta Ursae Minoris than to Alpha Ursae Minoris, and the entire constellation was taken to indicate the northern direction.
Its parent body is the comet 8P/Tuttle. Polaris (Alpha Ursae Minoris), at the end of the Little Dipper’s handle, marks (roughly) the
Others have suggested that an archaic interpretation of Ursa Major was that of a cow, forming a group with Bootes as herdsman, and Ursa Minor as a dog. The real insight is….
Around 1.5 billion years old, it has cooled and expanded since it was an A-type main sequence star.
Jeep Wrangler with Ursa Minor J30. [73], The Ursids, a prominent meteor shower that occurs in Ursa Minor, peaks between December 18 and 25.
The Drive recently featured a write up by Caleb Jacobs on Dan Grec's trip around Africa in his J30 equipped Jeep Wrangler.
Just over 3.5 degrees from the north celestial pole, Delta is a white main-sequence star of spectral type A1V with an apparent magnitude of 4.35,[40] located 172±1 light-years from Earth.
Located 860 ± 80 light-years distant,[37] it is an orange giant of spectral type K5III that has expanded and cooled off the main sequence, and has an estimated diameter around 4.8 times that of the Sun.
H1504+65 is a faint (magnitude 15.9) star that with the hottest surface temperature—200,000 K—yet discovered for a white dwarf. It is a triple star system, the supergiant primary star having two yellow-white main-sequence star companions that are 17 and 2,400 astronomical units (AU) distant and take 29.6 and 42,000 years respectively to complete one orbit. The ancient name of the constellation is Cynosura (Greek Κυνοσούρα "dog's tail"). It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations.
Or more specifically 130.9±0.6 light-years by parallax measurement.
Ursa Minor has traditionally been important for naviga… [17] The four stars constituting the bowl of the Little Dipper are of second, third, fourth, and fifth magnitudes, and provide an easy guide to determining what magnitude stars are visible, useful for city dwellers or testing one's eyesight.
For the best experience on our site, be sure to turn on Javascript in your browser.
100% "We are having fun with the ECamper.
[8] [52] It is a semidetached system, as the secondary star is filling its Roche lobe and transferring matter to the primary.
Brown (1899) suggested a non-Greek origin of the name (a loan from an Assyrian An‑nas-sur‑ra "high-rising"). Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the North American name, Little Dipper: seven stars with four in its bowl like its partner the Big Dipper.
Kochab and magnitude 3 Gamma Ursae Minoris have been called the "guardians of the pole star". "We are having fun with the ECamper. [1] Its position in the far northern celestial hemisphere means that the whole constellation is only visible to observers in the northern hemisphere. NGC 3172 (also known as Polarissima Borealis) is a faint, magnitude 14.9 galaxy that happens to be the closest NGC object to the North Celestial Pole.
Full Catalog View all. It has an apparent magnitude of 11.9 and is approximately 200,000 light years distant.
[35] A yellow-white main-sequence star of spectral type F5V, it is 97 light-years distant. [63] A further study published in 2012 showed that it has a companion around 2.7 times as massive as Jupiter that takes around 16 years to complete an orbit and is 6.8 AU distant from its Sun. For other uses, see, The 41 additional constellations added in the 16th, 17th and 18th centuries, The position of the north celestial pole moves in accordance with the Earth's.
[43] A yellow giant of spectral type G5III,[43] the primary is an RS Canum Venaticorum variable star. [15] Within the constellation's borders, there are 39 stars brighter than or equal to apparent magnitude 6.5. [65] Its centre is around 225000 light-years distant from Earth. It has a planet 4.5 times the mass of Jupiter with one of the most eccentric planetary orbits (with an eccentricity of 0.66), discovered by precisely measuring the radial velocity of the star in 2013.
[50] The combined spectrum of the system is A2V, but the masses of the two component stars are unknown. [56] Ursa Minor has two enigmatic white dwarfs. [51] RU Ursae Minoris is another example, ranging from 10 to 10.66 over 0.52 days. [25] Slightly variable over a period of 4.6 days, Kochab has had its mass estimated at 1.3 times that of the Sun via measurement of these oscillations. It is likely to have been a B3 main-sequence star and is now slightly variable.
It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. [61] HD 120084 is another evolved star, this time a yellow giant of spectral type G7III, around 2.4 times the mass of the Sun.
[45] Located south of Kochab and Pherkad towards Draco is RR Ursae Minoris,[3] a red giant of spectral type M5III that is also a semiregular variable ranging from magnitude 4.44 to 4.85 over a period of 43.3 days. [66] In 1999, Kenneth Mighell and Christopher Burke used the Hubble Space Telescope to confirm that it had a single burst of star formation that lasted around 2 billion years that took place around 14 billion years ago,[67] and that the galaxy was probably as old as the Milky Way itself.[68].
Around 390 light-years distant, it shines with an apparent magnitude of 5.04. [9][a] Its New Latin name of stella polaris was coined only in the early modern period. [42], Located close to Polaris is Lambda Ursae Minoris, a red giant of spectral type M1III. Ursa Minor, (Latin: “Lesser Bear”) in astronomy, a constellation of the northern sky, at about 15 hours right ascension and 80° north declination, and seven of whose stars outline the Little Dipper. Read more. Ursa Minor (Latin: "Lesser Bear", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the Northern Sky. There are various proposed explanations for the name Cynosura.
Ursa Minor has traditionally been important for navigation, particularly by mariners, because of Polaris being the north pole star. [70] It has been characterized as a starburst galaxy, which means it is undergoing a high rate of star formation compared to a typical galaxy.
Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the North American name, Little Dipper: seven stars with four in its bowl like its partner the Big Dipper. [58] WISE 1506+7027 is a brown dwarf of spectral type T6 that is a mere 11.1+2.3−1.3 light-years away from Earth. NGC 6217 is a barred spiral galaxy located some 67 million light-years away,[69] which can be located with a 10 cm (4 in) or larger telescope as an 11th magnitude object about 2.5° east-northeast of Zeta Ursae Minoris. [35] Nearby Zeta lies 5.00-magnitude Theta Ursae Minoris. 勾陳 Gòuchén (Curved Array) (including α UMi, δ UMi, ε UMi, ζ UMi, η UMi, θ UMi, λ UMi) and [46] T Ursae Minoris is another red giant variable star that has undergone a dramatic change in status—from being a long period (Mira) variable ranging from magnitude 7.8 to 15 over 310–315 days to a semiregular variable.
Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. It is listed in the MUL.APIN catalogue, compiled around 1000 BC among the "Stars of Enlil"—that is, the northern sky. Articles from Britannica Encyclopedias for elementary and high school students. It is a spectroscopic binary, with a companion 0.36 AU distant, and a third star—an orange main-sequence star of spectral type K0—8100 AU distant. [26] Bearing the proper name of Yildun, it has around 2.8 times the diameter and 47 times the luminosity of the Sun. [18], The three-letter abbreviation for the constellation, as adopted by the IAU (International Astronomical Union) in 1922, is "UMi".
[19] The official constellation boundaries, as set by Belgian astronomer Eugène Delporte in 1930, are defined by a polygon of 22 segments (illustrated in infobox).
If you wandered the Seattle Auto Show you might have seen an Ursa Minor Transit Connect at the Ride and Drive. In classical antiquity, the celestial pole was somewhat closer to Beta Ursae Minoris than to Alpha Ursae Minoris, and the entire constellation was taken to indicate the northern direction.
Its parent body is the comet 8P/Tuttle. Polaris (Alpha Ursae Minoris), at the end of the Little Dipper’s handle, marks (roughly) the
Others have suggested that an archaic interpretation of Ursa Major was that of a cow, forming a group with Bootes as herdsman, and Ursa Minor as a dog. The real insight is….
Around 1.5 billion years old, it has cooled and expanded since it was an A-type main sequence star.
Jeep Wrangler with Ursa Minor J30. [73], The Ursids, a prominent meteor shower that occurs in Ursa Minor, peaks between December 18 and 25.
The Drive recently featured a write up by Caleb Jacobs on Dan Grec's trip around Africa in his J30 equipped Jeep Wrangler.
Just over 3.5 degrees from the north celestial pole, Delta is a white main-sequence star of spectral type A1V with an apparent magnitude of 4.35,[40] located 172±1 light-years from Earth.
Located 860 ± 80 light-years distant,[37] it is an orange giant of spectral type K5III that has expanded and cooled off the main sequence, and has an estimated diameter around 4.8 times that of the Sun.
H1504+65 is a faint (magnitude 15.9) star that with the hottest surface temperature—200,000 K—yet discovered for a white dwarf. It is a triple star system, the supergiant primary star having two yellow-white main-sequence star companions that are 17 and 2,400 astronomical units (AU) distant and take 29.6 and 42,000 years respectively to complete one orbit. The ancient name of the constellation is Cynosura (Greek Κυνοσούρα "dog's tail"). It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations.
Or more specifically 130.9±0.6 light-years by parallax measurement.
Ursa Minor has traditionally been important for naviga… [17] The four stars constituting the bowl of the Little Dipper are of second, third, fourth, and fifth magnitudes, and provide an easy guide to determining what magnitude stars are visible, useful for city dwellers or testing one's eyesight.
For the best experience on our site, be sure to turn on Javascript in your browser.
100% "We are having fun with the ECamper.
[8] [52] It is a semidetached system, as the secondary star is filling its Roche lobe and transferring matter to the primary.
Brown (1899) suggested a non-Greek origin of the name (a loan from an Assyrian An‑nas-sur‑ra "high-rising"). Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the North American name, Little Dipper: seven stars with four in its bowl like its partner the Big Dipper.
Kochab and magnitude 3 Gamma Ursae Minoris have been called the "guardians of the pole star". "We are having fun with the ECamper. [1] Its position in the far northern celestial hemisphere means that the whole constellation is only visible to observers in the northern hemisphere. NGC 3172 (also known as Polarissima Borealis) is a faint, magnitude 14.9 galaxy that happens to be the closest NGC object to the North Celestial Pole.
Full Catalog View all. It has an apparent magnitude of 11.9 and is approximately 200,000 light years distant.
[35] A yellow-white main-sequence star of spectral type F5V, it is 97 light-years distant. [63] A further study published in 2012 showed that it has a companion around 2.7 times as massive as Jupiter that takes around 16 years to complete an orbit and is 6.8 AU distant from its Sun. For other uses, see, The 41 additional constellations added in the 16th, 17th and 18th centuries, The position of the north celestial pole moves in accordance with the Earth's.
[43] A yellow giant of spectral type G5III,[43] the primary is an RS Canum Venaticorum variable star. [15] Within the constellation's borders, there are 39 stars brighter than or equal to apparent magnitude 6.5. [65] Its centre is around 225000 light-years distant from Earth. It has a planet 4.5 times the mass of Jupiter with one of the most eccentric planetary orbits (with an eccentricity of 0.66), discovered by precisely measuring the radial velocity of the star in 2013.
[50] The combined spectrum of the system is A2V, but the masses of the two component stars are unknown. [56] Ursa Minor has two enigmatic white dwarfs. [51] RU Ursae Minoris is another example, ranging from 10 to 10.66 over 0.52 days. [25] Slightly variable over a period of 4.6 days, Kochab has had its mass estimated at 1.3 times that of the Sun via measurement of these oscillations. It is likely to have been a B3 main-sequence star and is now slightly variable.
It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. [61] HD 120084 is another evolved star, this time a yellow giant of spectral type G7III, around 2.4 times the mass of the Sun.
[45] Located south of Kochab and Pherkad towards Draco is RR Ursae Minoris,[3] a red giant of spectral type M5III that is also a semiregular variable ranging from magnitude 4.44 to 4.85 over a period of 43.3 days. [66] In 1999, Kenneth Mighell and Christopher Burke used the Hubble Space Telescope to confirm that it had a single burst of star formation that lasted around 2 billion years that took place around 14 billion years ago,[67] and that the galaxy was probably as old as the Milky Way itself.[68].
Around 390 light-years distant, it shines with an apparent magnitude of 5.04. [9][a] Its New Latin name of stella polaris was coined only in the early modern period. [42], Located close to Polaris is Lambda Ursae Minoris, a red giant of spectral type M1III. Ursa Minor, (Latin: “Lesser Bear”) in astronomy, a constellation of the northern sky, at about 15 hours right ascension and 80° north declination, and seven of whose stars outline the Little Dipper. Read more. Ursa Minor (Latin: "Lesser Bear", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the Northern Sky. There are various proposed explanations for the name Cynosura.
Ursa Minor has traditionally been important for navigation, particularly by mariners, because of Polaris being the north pole star. [70] It has been characterized as a starburst galaxy, which means it is undergoing a high rate of star formation compared to a typical galaxy.
Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the North American name, Little Dipper: seven stars with four in its bowl like its partner the Big Dipper. [58] WISE 1506+7027 is a brown dwarf of spectral type T6 that is a mere 11.1+2.3−1.3 light-years away from Earth. NGC 6217 is a barred spiral galaxy located some 67 million light-years away,[69] which can be located with a 10 cm (4 in) or larger telescope as an 11th magnitude object about 2.5° east-northeast of Zeta Ursae Minoris. [35] Nearby Zeta lies 5.00-magnitude Theta Ursae Minoris. 勾陳 Gòuchén (Curved Array) (including α UMi, δ UMi, ε UMi, ζ UMi, η UMi, θ UMi, λ UMi) and [46] T Ursae Minoris is another red giant variable star that has undergone a dramatic change in status—from being a long period (Mira) variable ranging from magnitude 7.8 to 15 over 310–315 days to a semiregular variable.
