Blog page 127




                                               

Gliese 433

Gliese 433 is a dim red dwarf star in the constellation of Hydra, roughly 29.5 light years away from the Sun. Astronomers have announced the discovery of a super-Earth extrasolar planet in close orbit.

                                               

HD 70573 b

HD 70573 b is a superjovian planet orbiting the youngest RV host star HD 70573 approximately 149 light-years away in the constellation of Hydra. The discovery of the planet is important because it enables the study of debris disks around young st ...

                                               

HD 72561

HD 72561 is a star in the constellation Hydra. Its apparent magnitude is 5.867. Based on parallax, it is located about 1.600 light-years away. HD 72561 is a G-type giant star. It is over 4 times as massive as the Sun and 48 times as wide. It is a ...

                                               

HD 72659 b

HD 72659 b is a superjovian exoplanet massing at least 3.3 M J orbiting at 4.77 AU from the star taking 3630 days to orbit. The orbital distance range from 3.49 AU to 6.05 AU with orbital eccentricity of 0.269.

                                               

HD 74156

HD 74156 is a yellow dwarf star in the constellation of Hydra, 210 light years from the Solar System. It is known to be orbited by two giant planets.

                                               

HD 74156 b

HD 74156 b is an extrasolar planet at least 1.88 times the mass of Jupiter that orbits the star HD 74156. It is most likely a gas giant. This planet was discovered in April 2001 by Dominique Naef and Michel Mayor along with the second planet HD 7 ...

                                               

HD 74156 c

HD 74156 c is an extrasolar planet at least eight times the mass of Jupiter orbiting the star HD 74156. It is most likely a gas giant. This planet was discovered by Dominique Naef and Michel Mayor in April 2001 together with the first planet HD 7 ...

                                               

HD 76151

HD 76151 is a G-type main sequence star in the constellation of Hydra. It has an apparent visual magnitude of approximately 6.00. An infrared excess has been detected around this star, most likely indicating the presence of a circumstellar disk a ...

                                               

HD 82943

HD 82943 is a yellow dwarf star approximately 89 light-years away in the constellation of Hydra. Two extrasolar planets have been confirmed to be orbiting it, and it is thought that the system had more giant planets that were "swallowed" by the p ...

                                               

HD 82943 b

HD 82943 b is an extrasolar planet approximately 89 light-years away in the constellation of Hydra. The planet was announced in 2000 by the Geneva Extrasolar Planet Search Team. The planet is the outermost planet of two.

                                               

HD 82943 c

HD 82943 c is an extrasolar planet approximately 89 light-years away in the constellation of Hydra. The planet was announced in 2001 to be orbiting the yellow dwarf star HD 82943. The planet is the innermost planet of two.

                                               

HD 83953

HD 83953 is a single, blue-white hued star in the equatorial constellation of Hydra. It is visible to the naked eye, having an apparent visual magnitude of 4.76. Based upon an annual parallax shift of 6.6 mas, the distance to this star is estimat ...

                                               

HD 85859

HD 85859 is a single star in the equatorial constellation of Hydra. It has an apparent visual magnitude of 4.88, which is bright enough to be visible to the naked eye. The distance to this star, as estimated from its annual parallax shift of 12.6 ...

                                               

HD 85951

HD 85951, also designated HR 3923 and formally named Felis, is a star in the constellation of Hydra. Its apparent magnitude is 4.95. Based on parallax measurements it is about 530 light-years from the Sun.

                                               

HD 86226 b

HD 86226 b is a gas giant exoplanet discovered by the Magellan Planet Search Program in 2010. It was confirmed in data collected by the CORALIE spectrograph on the Swiss 1.2-metre Leonhard Euler Telescope in 2012. It takes about 4.6 years to orbi ...

                                               

HD 86264 b

HD 86264 b is an extrasolar planet which orbits the F-type main sequence star HD 86264, located approximately 237 light years away in the constellation Hydra. The planet is considered to orbit in an eccentric path around the star with a period of ...

                                               

HD 92036

HD 92036 is a single star in the equatorial constellation of Hydra. Its apparent magnitude is 4.87. This is an aging red giant star on the asymptotic giant branch with a stellar classification of M1III:Ba0.5.

                                               

HD 92945

HD 92945 is a K-type main sequence star in the constellation of Hydra. Its apparent visual magnitude varies by 0.02 magnitudes and is approximately 7.72 at maximum brightness. A debris disk has been observed around the star by coronagraphic imagi ...

                                               

HD 96700

HD 96700 is the Henry Draper Catalogue designation for a star in the equatorial constellation of Hydra. It has an apparent visual magnitude of 6.51, which puts it below the limit that can be seen with the naked eye by a typical observer. Based up ...

                                               

HD 96819

HD 96819 is a single star in the equatorial constellation of Hydra. It was formerly known by its designation 10 Crateris, but that name fell into disuse after constellations were redrawn and the star was no longer in Crater. It is visible to the ...

                                               

HD 100307

HD 100307 is a suspected variable star in the constellation of Hydra. Its apparent magnitude is 6.16, but interstellar dust makes it appear 0.346 magnitudes dimmer than it should be. It is located some 340 light-years away, based on parallax. HD ...

                                               

HD 122430 b

HD 122430 b is a giant planet orbiting around the giant star HD 122430. It has a mass at least 3.71 times that of Jupiter. This planet located at a distance of 1.02 astronomical units away from its star, which is very similar to the Earths distan ...

                                               

HR 4339

HR 4339 is a single star in the equatorial constellation of Hydra. It was designated as Beta Antliae by Lacaille, and Gould intended to keep it in that constellation. However, the delineating of constellation boundaries by the IAU in 1930 saw it ...

                                               

HR 4458

HR 4458 is a binary star system in the equatorial constellation of Hydra. It has the Gould designation 289 G. Hydrae ; HR 4458 is the Bright Star Catalogue designation. At a distance of 31.13 light years, it is the closest star system to the sola ...

                                               

Iota Hydrae

Iota Hydrae, formally named Ukdah, is a star in the constellation of Hydra, about 8° to the north-northwest of Alphard and just to the south of the celestial equator. Visible to the naked eye, it is a suspected variable star with an apparent visu ...

                                               

Kappa Hydrae

κ Hydrae, Latinised as Kappa Hydrae, is a solitary star in the equatorial constellation of Hydra. Its apparent visual magnitude is 5.06, which is bright enough to be faintly visible to the naked eye. The distance to this star is around 135 pc, ba ...

                                               

KU Hydrae

KU Hydrae is a binary star in the constellation Hydra. The primary star is an Alpha2 Canum Venaticorum variable with its apparent magnitude varying from 0.05 magnitudes over a period of 33.97 days. This star was discovered to be a visual binary s ...

                                               

Lambda Hydrae

λ Hydrae, Latinised as Lambda Hydrae, is a spectroscopic binary star in the constellation Hydra. Its apparent magnitude is 3.61 Located around 33.3 parsecs distant. The spiral galaxy NGC 3145 is only 7.8′ away to the southwest. The primary is an ...

                                               

Mu Hydrae

μ Hydrae, Latinised as Mu Hydrae, is a solitary, orange-hued star in the equatorial constellation of Hydra. It is visible to the naked eye with an apparent visual magnitude of 3.83. Positioned just 1.8° to the south-southwest is the planetary neb ...

                                               

NGC 2936

NGC 2936 is an interacting spiral galaxy located at a distance of 326 million light years, in the constellation Hydra. NGC 2936 is interacting with elliptical galaxy NGC 2937, located just beneath it. They were both discovered by Albert Marth on ...

                                               

NGC 3081

NGC 3081 is a barred lenticular ring galaxy in the constellation of Hydra. NGC 3081 is located about 85 million light-years away from Earth, which means, given its apparent dimensions, that NGC 3081 is approximately 60.000 light years across. It ...

                                               

NGC 3923

NGC 3923 is an elliptical galaxy located in the constellation Hydra. It is located at a distance of circa 90 million light years from Earth, which, given its apparent dimensions, means that NGC 3923 is about 155.000 light years across. NGC 3923 i ...

                                               

Nu Hydrae

Nu Hydrae, Latinized from ν Hydrae, is an orange-hued star in the constellation Hydra, near the border with the neighboring constellation of Crater. It has an apparent visual magnitude of 3.115, which is bright enough to be seen with the naked ey ...

                                               

Omega Hydrae

Omega Hydrae, Latinized from ω Hydrae, is a golden-hued star in the equatorial constellation of Hydra, located to the west-southwest of the brighter star Zeta Hydrae. Based upon an annual parallax shift of just 3.64 mas as seen from Earth, it is ...

                                               

Omicron Hydrae

Omicron Hydrae is the Bayer designation for a solitary star in the equatorial constellation Hydra. At one time it bore the Flamsteed designation 25 Crateris, but this is no longer used by astronomers so as to avoid confusion. With an apparent vis ...

                                               

Phi1 Hydrae

Phi 1 Hydrae, Latinized from φ 1 Hydrae, is a yellow-hued star in the constellation Hydra. Its apparent magnitude is 7.61, making it too faint to be seen with the naked eye. Based upon an annual parallax shift of 12.3 mas as seen from Earth, it i ...

                                               

Phi2 Hydrae

Phi 2 Hydrae, Latinized from φ 2 Hydrae, is a star in the constellation Hydra. It originally received the Flamsteed designation of 1 Crateris before being placed in the Hydra constellation. Based upon an annual parallax shift of 4.31 mas as seen ...

                                               

Phi3 Hydrae

Phi 3 Hydrae is a binary star in the equatorial constellation of Hydra. It originally received the Flamsteed designation of 2 Crateris before being placed in the Hydra constellation. Based upon an annual parallax shift of 15.49 mas as seen from E ...

                                               

Pi Hydrae

Pi Hydrae is a star in the constellation Hydra with an apparent visual magnitude of 3.3, making it visible to the naked eye. Parallax measurements put this star at a distance of about 101 light-years from the Earth. The spectrum of this star show ...

                                               

R Hydrae

R Hydrae, also known as R Hya, is a Mira-type variable star in the constellation Hydra. The magnitude of R Hydrae varies over a period of 389 days, between 3.5 and 10.9. The period of R Hydrae changes slowly. At maximum brightness the star can be ...

                                               

Rho Hydrae

Rho Hydrae, equally written ρ Hydrae, is a binary star in the equatorial constellation of Hydra. It is visible to the naked eye with an apparent visual magnitude of 4.34. The distance to this system, based upon an annual parallax shift of 9.21 ma ...

                                               

Sigma Hydrae

Sigma Hydrae, also named Minchir, is a solitary star in the equatorial constellation of Hydra. It is visible to the naked eye with an apparent visual magnitude of 4.48. The estimated distance to this star from the Sun, based upon an annual parall ...

                                               

Tau1 Hydrae

Tau 1 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 from the Sun. The system has a combined appare ...

                                               

Theta Hydrae

Theta Hydrae, Latinized from θ Hydrae, is a binary star system in the constellation Hydra. It is visible to the naked eye with an apparent visual magnitude of 3.9. The star system has a high proper motion with an annual parallax shift of 28.74 ma ...

                                               

Tololo 1247-232

Tololo 1247-232) is a small galaxy at a distance of 652.000.000 light-years. It is situated in the southern equatorial constellation of Hydra. Visually, Tol 1247 appears to be an irregular or possibly a barred spiral galaxy. Tol 1247 is named aft ...

                                               

TW Hydrae

TW Hydrae is a T Tauri star approximately 196 light-years away in the constellation of Hydra. The star is the closest such star to the Solar System. TW Hydrae is about 80% of the mass of the Sun, but is only about 5-10 million years old. The star ...

                                               

TW Hydrae b

TW Hydrae b is a likely extrasolar planet orbiting the young T Tauri star TW Hydrae approximately 176 light-years away in the constellation of Hydra. It is likely a Neptune-like planet orbiting at a distance of nearly 22 AU from its star.

                                               

U Hydrae

U Hydrae is a single star in the equatorial constellation of Hydra, near the northern constellation border with Sextans. It is a semiregular variable star of sub-type SRb, with its brightness ranging from visual magnitude 4.7 to 5.2 over a 450-da ...

                                               

Upsilon2 Hydrae

Upsilon 2 Hydrae, Latinized from υ 2 Hydrae, is a solitary star in the equatorial constellation of Hydra. Visible to the naked eye, it is photometrically stable with an apparent visual magnitude of 4.59. Based upon an annual parallax shift of 10. ...

                                               

V Hydrae

V Hydrae is a carbon star in the constellation Hydra. To date perhaps uniquely in our galaxy it has plasma ejections/eruptions on a grand scale every 8.5 years caused by its near, unseen companion in an 8.5 year orbit, inferred by its ultraviolet ...