List of stars in Hydrus - AbsoluteAstronomy.com

This is the list of notable star

Star

A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...

s in the constellation

Constellation

In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....

Hydrus
Hydrus
Hydrus is a small constellation in the southern sky, created in the sixteenth century. Its name means "male water snake", and it should not be confused with Hydra, a much larger constellation which represents a female water snake.-History:...

, sorted by decreasing brightness.

Name	B Bayer designation A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name...	G. Gould designation Gould designations for stars are similar to Flamsteed designations in the way that they number stars within a constellation in increasing order of right ascension. Each star is assigned an integer , followed by " G. " , and then the Latin genitive of the constellation it lies in...	HD Henry Draper Catalogue The Henry Draper Catalogue is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension , published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the...	HIP	vis. mag. Apparent magnitude The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...	abs. mag. Absolute magnitude Absolute magnitude is the measure of a celestial object's intrinsic brightness. it is also the apparent magnitude a star would have if it were 32.6 light years away from Earth...	Dist. (ly)	Sp. class Stellar classification In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...	Notes
β Hyi Beta Hydri Beta Hydri is a star in the constellation Hydrus. It is about 24.4 light years away from Earth. It is larger and slightly more massive than the Sun....	β	5	2151	2021	2.82	3.45	24	G2IV	nearby star
α Hyi Alpha Hydri Alpha Hydri is a star in the constellation Hydrus. It is sometimes informally known as the Head of Hydrus. It should not be confused with Alpha Hydrae in the constellation Hydra. Alpha Hydri is one of only three stars in the constellation Hydrus that is above the fourth visual magnitude...	α	24	12311	9236	2.86	1.16	71	F0V	Head of Hydrus
γ Hyi	γ	62	24512	17678	3.26	−0.83	214	M2III	Foo Pih
δ Hyi	δ	38	15008	11001	4.08	0.99	135	A3V
ε Hyi	ε	44	16978	12394	4.12	0.76	153	B9III
η² Hyi	η²	21	11977	8928	4.68	0.57	217	G5III	has a planet Extrasolar planet An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars... (b)
ν Hyi	ν	50	18293	13244	4.76	−0.26	329	K3III
ζ Hyi	ζ	47	17566	12876	4.83	0.05	295	A2IV/V
λ Hyi	λ	8	4815	3781	5.09	1.10	205	K5III
μ Hyi	μ	42	16522	11757	5.27	0.51	292	G4III
θ Hyi	θ	51	19400	14131	5.51	−0.52	525	B8III/IV
ι Hyi	ι	56	21024	15201	5.51	3.17	96	F4III
π¹ Hyi	π¹	35	14141	10418	5.57	−1.21	739	M1III
π² Hyi	π²	36	14287	10513	5.67	−0.11	468	K2III
BN Hyi		55	20313	14521	5.67	1.26	248	F2II-III	δ Sct variable Delta Scuti variable A Delta Scuti variable is a variable star which exhibits variations in its luminosity due to both radial and non-radial pulsations of the star's surface. Typical brightness fluctuations are from 0.003 to 0.9 magnitudes in V over a period of a few hours, although the amplitude and period of the...
		15	10615	7921	5.70	0.42	371	K2/K3III
		9	8810	6631	5.92	−1.53	1009	M0III
		4	1801	1706	5.96	−0.69	697	K3III
		59	21722	15968	5.96	2.99	128	F3V
κ Hyi	κ	39	15248	11095	5.99	1.05	318	K0III
		12	9896	7387	6.03	3.00	132	F2V
τ² Hyi	τ²	18	11604	8366	6.05	2.09	202	F0III
		22	11995	8983	6.07	2.73	152	F0IV/V
		26	12477	9318	6.09	0.50	428	K2III
		14	10042	7271	6.11	0.46	441	G3IV
		53	19940	14547	6.12	1.30	300	K1III
		58	21563	15840	6.14	−0.17	595	A4:V+...
σ Hyi	σ	25	12363	8991	6.15	3.07	135	F5/F6IV/V
		13	10052	7506	6.18	−0.78	805	M3III
CT Hyi		61	24188	17543	6.26	0.50	463	B8V	α² CVn variable
τ¹ Hyi	τ¹	17	10859	7879	6.33	0.91	395	G6/G8III
		23	12270	9149	6.36	0.28	535	G8II/III
		20	11944	8957	6.43	2.73	179	F2V
		1	1221	1268	6.49	−0.18	704	G8/K0III
η¹ Hyi	η¹	19	11733	8751	6.77	−0.03	748	B9V
GJ 3021 GJ 3021 GJ 3021, formally cataloged as Gliese 3021, is a binary star system approximately 57 light-years away in the constellation of Hydrus ....		2	1237	1292	6.59	5.36	57	G8.5Vk	has a planet (b GJ 3021 b GJ 3021 b is an extrasolar planet approximately 57 light-years away in the constellation of Hydrus. The planet is a Jupiter-like planet orbiting about 0.5 AU from its star with a minimum mass 3.37 times that of Jupiter, as determined by measuring variations in the radial velocity of the star... )
HD 10180 HD 10180 HD 10180 is a solar-type star. A research team led by Christophe Lovis of the University of Geneva discovered that the star has at least five planets, and possibly as many as seven. It is 127 light-years away, in the southern constellation of Hydrus...			10180	7599	7.33	4.36	128	G1V	has six confirmed planets (c, d, e, f, g and h) and one unconfirmed planet (b)

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