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Star in the constellation Hydra
54 Hydrae, also known by its Bayer designation m Hydrae, is a binary star 99 light-years from Earth, easily divisible in small amateur telescopes. The
54_Hydrae
Constellation straddling the celestial equator
star in Hydra is Sigma Hydrae (σ Hydrae), which also has the name of Minchir, from the Arabic for snake's nose. At magnitude 4.54, it is rather dim. The
Hydra_(constellation)
27m 35.25s −08° 39′ 31.3″ 1.99 −1.69 177 K3III Alfard, Kalbelaphard, Cor Hydrae, Soheil al Fard, Soheil Solitarius γ Hya γ 46 345 115659 64962 13h 18m 55
List_of_stars_in_Hydra
Star in the constellation Hydra
constellation of Hydra. It has the Bayer designation Alpha Hydrae, which is that is Latinized from α Hydrae, and abbreviated Alpha Hya or α Hya. It is a giant
Alphard
Double star system in the constellation Hydra
asterism consisting of δ Hydrae, σ Hydrae, η Hydrae, ρ Hydrae, ε Hydrae, ζ Hydrae, ω Hydrae and θ Hydrae Consequently, δ Hydrae itself is known as 柳宿一 (Liǔ
Delta_Hydrae
Triple star system in the constellation Hydra
Tau1 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
Tau1_Hydrae
Star in the constellation Hydra
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
Mu_Hydrae
Likely extrasolar planet in the constellation Hydra
Hydrae approximately 176 light-years (54 parsecs, or nearly 1.665×1016 km) away in the constellation of Hydra. TW Hydrae b is an ice giant, an exoplanet with
TW_Hydrae_b
Star in the constellation Hydra
9 Hydrae is a single star in the equatorial constellation of Hydra, located 205 light years away from the Sun. It is visible to the naked eye as a faint
9_Hydrae
Star in the constellation Hydra
of Sigma Hydrae, Delta Hydrae, Eta Hydrae, Rho Hydrae, Epsilon Hydrae, Zeta Hydrae, Omega Hydrae and Theta Hydrae. Consequently, Sigma Hydrae itself is
Sigma_Hydrae
Star in the constellation Hydra
consisting of Upsilon1 Hydrae, Lambda Hydrae, Mu Hydrae, HD 87344, Kappa Hydrae and Phi1 Hydrae. Consequently, Upsilon1 Hydrae itself is known as 張宿一
Upsilon1_Hydrae
Star in the constellation Hydra
C Hydrae is a single star in the equatorial constellation of Hydra, located 122 light years away from the Sun. It has the Flamsteed designation 30 Monocerotis
C_Hydrae
Double star in the constellation Hydra
Beta Hydrae, Latinized from β Hydrae, is a double star in the equatorial constellation of Hydra. Historically, Beta Hydrae was designated 28 Crateris
Beta_Hydrae
Binary star system in the constellation Hydra
Hydrae, ι Hydrae and 33 Hydrae (A Hydrae) were traditionally known as Ukdah, Arabic for "knot". The name Ukdah is now officially applied to ι Hydrae.
Tau2_Hydrae
Star in the constellation Hydra
Omega Hydrae, Latinised from ω Hydrae, is a golden-hued star in the equatorial constellation of Hydra, located to the west-southwest of the brighter star
Omega_Hydrae
Star in the constellation Hydra
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
Lambda_Hydrae
Index of articles associated with the same name
The Bayer designation Tau Hydrae (τ Hya, τ Hydrae) is shared by two star systems in the equatorial constellation of Hydra. The two stars are separated
Tau_Hydrae
Binary star system in the constellation Hydra
Phi3 Hydrae (φ3 Hya) is a binary star in the equatorial constellation of Hydra. It originally received the Flamsteed designation of 2 Crateris before being
Phi3_Hydrae
Star in the constellation Hydra
Upsilon2 Hydrae, Latinised from υ2 Hydrae, is a solitary star in the equatorial constellation of Hydra. Visible to the naked eye, it is photometrically
Upsilon2_Hydrae
Star in the constellation Hydra
Xi Hydrae, Latinised from ξ Hydrae, is a solitary star in the equatorial constellation of Hydra. With an apparent magnitude of 3.54 it is visible to the
Xi_Hydrae
Binary star system in the constellation Hydra
Chi2 Hydrae, Latinised from χ2 Hydrae, is a binary star system in the equatorial constellation of Hydra. Based upon an annual parallax shift of 4.6 mas
Chi2_Hydrae
Binary star in the constellation Hydra
asterism consisting of ρ Hydrae, δ Hydra, σ Hydrae, η Hydrae, ε Hydrae, ζ Hydrae, ω Hydrae and θ Hydrae Consequently, ρ Hydrae itself is known as 柳宿四 (Liǔ
Rho_Hydrae
Star in the constellation Hydra
Hydrae is a single variable star in the equatorial constellation of Hydra. It is sometimes identified as Gl 355 from the Gliese Catalogue; LQ Hydrae is
LQ_Hydrae
Star in the constellation Hydra
Chi1 Hydrae (χ1 Hydrae) is a binary star in the equatorial constellation of Hydra. It originally received the Flamsteed designation of 9 Crateris before
Chi1_Hydrae
Star in the constellation Hydra
Iota Hydrae, formally named Ukdah /ˈʌkdə/, is a star in the constellation of Hydra, about 8° to the north-northwest of Alphard (Alpha Hydrae) and just
Iota_Hydrae
Star in the constellation Hydra
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
Kappa_Hydrae
Star in the constellation Hydra
Phi1 Hydrae, Latinized from φ1 Hydrae, is a yellow-hued star in the constellation Hydra. Its apparent magnitude is 7.61, making it too faint to be seen
Phi1_Hydrae
Stellar classification
(2002). "Starspots and active regions on the emission red dwarf star LQ Hydrae". Astronomy and Astrophysics. 396: 203–211. Bibcode:2002A&A...396..203A
K-type_main-sequence_star
Binary star system in the constellation Hydra
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
Theta_Hydrae
Star in the constellation Hydra
asterism consisting of η Hydrae, δ Hydra, σ Hydrae, ρ Hydrae, ε Hydrae, ζ Hydrae, ω Hydrae and θ Hydrae Consequently, η Hydrae itself is known as 柳宿三 (Liǔ
Eta_Hydrae
Blue-hued star in the constellation Hydra
Omicron Hydrae (ο Hya) is the Bayer designation for a solitary star in the equatorial constellation Hydra. At one time it bore the Flamsteed designation
Omicron_Hydrae
Brown dwarf in the constellation Centaurus
spectral type of M8, it is very young, and probably a member of the TW Hydrae association. Its estimated mass is around 25 Jupiter masses. The companion
2M1207
(Wasat) Triple star system 3.54 Iota Cephei Star 3.54 Xi Hydrae Star 3.54 Delta Eridani (Rana) Star Suspected variable star 3.54 Iota Lupi Star Maximum brightness
List of brightest natural objects in the sky
List_of_brightest_natural_objects_in_the_sky
Type of variable star
see it in a few of the several thousand Mira stars known, possibly in R Hydrae. Most Mira variables do exhibit slight cycle-to-cycle changes in period
Mira_variable
Binary star system in the constellation Hydra
Psi Hydrae (ψ Hydrae) is a star system in the equatorial constellation of Hydra. Based upon an annual parallax shift of 14.09 mas as seen from Earth, it
Psi_Hydrae
HD 146946 90.3 F9V HD 82943 (164 G. Hydrae) 90.31 ± 0.07 Hydra 09h 34m 50.735s −12° 07′ 46.37″ F9 V Fe+0.5 6.54 36.1158±0.0264 Has 2 confirmed (HD 82943
List of star systems within 90–95 light-years
List_of_star_systems_within_90–95_light-years
Star in the constellation Hydra
away from the Sun. This is most likely (98.7% chance) a member of the TW Hydrae association. This is a rapidly rotating A-type main-sequence star that is
HD_96819
Star in the constellation Hydra
HD 83953 (I Hydrae) is a single, blue-white hued star in the equatorial constellation of Hydra. It is visible to the naked eye, having an apparent visual
HD_83953
Star in the constellation Leo
with a radial velocity of +4.8 km/s. It is a candidate member of the TW Hydrae stellar kinematic group. This is an F-type main-sequence star with a stellar
89_Leonis
Star in the constellation Hydra
51 Hydrae is a single star in the equatorial constellation of Hydra, located 170 light years away from the Sun. It has the Bayer designation k Hydrae; 51
51_Hydrae
Beuermann, K.; Reinsch, K. (2024). "Current and secular accretion rates of EX Hydrae". Astronomy and Astrophysics. 687: A273. arXiv:2412.13850. Bibcode:2024A&A
List_of_smallest_known_stars
Chinese traditional practice
Scorpionis South: The Vermilion Bird (Summer solstice)—Huo (Fire 火), α Hydrae West: The White Tiger (Autumn equinox)—Mǎo (Hair 毛), η Tauri (the Pleiades)
Feng_shui
86–2.13var) Polaris α Ursae Minoris 0430 F7 Ib Northern 48 2.00 Alphard α Hydrae 0180 K3 II-III Southern 49 2.00 Hamal α Arietis 0066 K1 IIIb Northern 50
List_of_brightest_stars
Chemical compound of hydrogen and oxygen
those of more than half of T Tauri stars such as AA Tauri as well as TW Hydrae, IRC +10216 and APM 08279+5255, VY Canis Majoris and S Persei. Liquid water
Water
78 B F0V Beta Gruis (Tiaki) 177 ± 4 Grus M4.5 III 2.146 Alphard (Alpha Hydrae) 177 ± 8 Hydra K3IIIa +2.00 Acubens (Alpha Cancri) 178 ± 3 Cancer kA7VmF0/2III/IVSr
List of star systems within 150–200 light-years
List_of_star_systems_within_150–200_light-years
CH3OH; simplest possible alcohol
astronomers detected methanol in a planet-forming disc around the young star TW Hydrae using the Atacama Large Millimeter Array radio telescope. In their embalming
Methanol
09.567s −66° 28′ 07.68″ K3III-IV 8.40 Has three confirmed exoplanets 1 Hydrae 88.23 ± 0.15 Hydra 08h 24m 35.14s −03° 45′ 04.2″ F6V 5.61 HD 144585 88.42
List of star systems within 85–90 light-years
List_of_star_systems_within_85–90_light-years
Study of the movement of stars
Journal. 976 (1): 54. doi:10.3847/1538-4357/ad8348. ISSN 0004-637X. Song, Inseok; et al. (December 2003). "New Members of the TW Hydrae Association, β Pictoris
Stellar_kinematics
Star in the constellation Crater
consisting of Alpha Crateris, Gamma Crateris, Zeta Crateris, Lambda Crateris, Nu Hydrae, Eta Crateris, Delta Crateris, Iota Crateris, Kappa Crateris, Epsilon Crateris
Alpha_Crateris
Nearest OB association to Earth
million-year-old Eta Chamaeleontis moving group, ~8 million-year-old TW Hydrae association, ~12 million-year-old Beta Pictoris moving group, and possibly
Scorpius–Centaurus association
Scorpius–Centaurus_association
L/Teff V674 Cephei 999 L/Teff RSGC1-F09 (FMR2006 9) 996+210 −269 L/Teff CZ Hydrae 990 L/Teff IRAS 18111-2257 ~990 – 1,200 L/Teff Estimated based on the bolometric
List_of_largest_stars
Christopher J. (2000-08-01). "WFPC2 Images of a Face-on Disk Surrounding TW Hydrae". The Astrophysical Journal. 538 (2): 793–800. Bibcode:2000ApJ...538..793K
List of resolved circumstellar disks
List_of_resolved_circumstellar_disks
Vela KV ADS 9544 56.4 ± 0.8 Serpens KV Gliese 727 56.4 ± 1 Aquila KV Tau¹ Hydrae 56.5 ± 2.2 Hydra 09h 29m 08.89655s −02° 46′ 08.2649″ F6V 4.59 Gliese 3833
List of star systems within 55–60 light-years
List_of_star_systems_within_55–60_light-years
Sigma Librae (Brachium) 261.0+5.25 −6.26 Libra M2.5III 3.20 - 3.46 Iota Hydrae (Ukdah) 263 ± 3 Hydra K2.5 III 3.91 HJ 2814 B 263.5 ± 0.9 Serpens G0V 8
List of star systems within 250–300 light-years
List_of_star_systems_within_250–300_light-years
Star in the constellation Hydra
(164 G. Hydrae) is a star with a pair of orbiting exoplanets in the equatorial constellation of Hydra. It has an apparent visual magnitude of 6.54, which
HD_82943
Star in the constellation Hydra
Phi2 Hydrae, Latinized from φ2 Hydrae, is a star in the constellation Hydra. It originally received the Flamsteed designation of 1 Crateris before being
Phi2_Hydrae
141°12′E / 22°N 141.2°E / 22; 141.2 Hydrae Chasma 6°48′S 62°00′W / 6.8°S 62.0°W / -6.8; -62.0 Ius Chasma 6°54′S 85°48′W / 6.9°S 85.8°W / -6.9; -85
List_of_chasmata_on_Mars
V1298 Tauri 354 ± 2 Taurus K0-K1.5 10.31 - 10.43 Has 4 exoplanets. Rho Hydrae 354 ± 8 Hydra A0 Vn 4.34 HD 115587 356.2±0.5 G0 Has one known exoplanet
List of star systems within 350–400 light-years
List_of_star_systems_within_350–400_light-years
Young binary star system in the constellation Sagittarius
systems within 100 parsecs with protoplanetary disks, the others being TW Hydrae, HD 141569, and 49 Ceti. The two stars are still accreting matter from the
V4046_Sagittarii
WD 0343+247 129 ± 1 03h 46m 46.517s +24° 56′ 02.67″ DX13 +19.0 Epsilon Hydrae (Ashlesha) A 129 ± 5 Hydra 08h 46m 46.51223s +06° 25′ 07.6855″ G5 III 3
List of star systems within 100–150 light-years
List_of_star_systems_within_100–150_light-years
Galaxy in the constellation of Hydra
Gliese 357 d HD 72659 b HD 74156 b c HD 82943 b c HD 86226 b HD 86264 b TW Hydrae b (unconfirmed) WASP-193b Star clusters Messier 48 Messier 68 NGC 5694 Price-Whelan
ESO_510-G13
Substellar object
signature, this object was determined to belong to the ~8-million-year-old TW Hydrae association, and the mass of the secondary was determined to be 8 ± 2 MJ
Brown_dwarf
2005 video game
(スタジアム跡☆) 2:07 9. "Stadium Mark ★" (スタジアム跡★) 1:43 10. "Col Hydrae ☆" (コル・ヒドラエ遺跡☆) 2:57 11. "Col Hydrae ★" (コル・ヒドラエ遺跡★) 1:51 12. "Mintakah Valley ☆" (ミンタカ渓谷☆)
Code_Age_Commanders
Branch of astronomy
formation and wind acceleration around the aluminum oxide-rich AGB star W Hydrae". Science Advances. 3 (11): id.eaao2149. Bibcode:2017SciA....3O2149T. doi:10
Dust_astronomy
Possible existence of liquid water beyond Earth
planet-hunting Kepler space telescope during its first four months of operation, 54 are orbiting in the parent star's habitable 'Goldilocks' zone where liquid
List of extrasolar candidates for liquid water
List_of_extrasolar_candidates_for_liquid_water
Navigation (PDF). Bethesda, MD: National Imagery and Mapping Agency. ISBN 0-939837-54-4. Retrieved 2016-09-20. Strasbourg Astronomical Data Center (CDS) (2010)
List_of_stars_for_navigation
0.08 3.166 F6 IV 355 LQ Hydrae Hydra 59.59 ± 0.03 7.82 (7.79 to 7.86) K1Vp 356 11 Leonis Minoris Leo Minor 36.64 ± 0.04 5.54 + 14.0 G8V + M4 357 Hydra
List of Gliese and GJ objects (1-1000)
List_of_Gliese_and_GJ_objects_(1-1000)
Constellation in the southern celestial hemisphere
Alpha, and Gamma Crateris—form a triangle located near the brighter star Nu Hydrae in Hydra. Within the constellation's borders, there are 33 stars brighter
Crater_(constellation)
Subdwarf B star
unpredictably by up to 0.13 magnitudes. It has been classified as a V361 Hydrae variable, but also as a V1093 Herculis variable, which typically has slower
Kepler-429
Nebula located in the constellation of Hydra
this is its rotational period, and has the variable star designation LW Hydrae. When observed in ultraviolet wavelengths by the International Ultraviolet
Abell_35
Irregular galaxy in the Hydra constellation
Gliese 357 d HD 72659 b HD 74156 b c HD 82943 b c HD 86226 b HD 86264 b TW Hydrae b (unconfirmed) WASP-193b Star clusters Messier 48 Messier 68 NGC 5694 Price-Whelan
MRC_1138−262
Pair of overlapping galaxies in the constellation of Hydra
Gliese 357 d HD 72659 b HD 74156 b c HD 82943 b c HD 86226 b HD 86264 b TW Hydrae b (unconfirmed) WASP-193b Star clusters Messier 48 Messier 68 NGC 5694 Price-Whelan
AM_1316−241
Herbig Ae star in the constellation Sagittarius
around HD 163296. The abundance of methanol is lower when compared to TW Hydrae, likely due to a difference in stellar radiation. The water snowline has
HD_163296
Star in the constellation Pictor
Song, B. Zuckerman; Bessell, M. S. (December 2003). "New Members of the TW Hydrae Association, β Pictoris Moving Group, and Tucana/Horologium Association"
AB_Pictoris
000 C 2,600,000 Sextans A 100 2,000 C 4,310,000 IRC +30374 2,000 C 3,900 IRC +60144 2,000 C 3,400 CZ Hydrae 2,000 C 7,200 SS Virginis 2,000 C-N4.5 2,100
List_of_coolest_stars
Ancient port town in Kerala, India
daunger of pirates and rovers, which keepe ordinarily about a place called Hydræ and besides that, it is not richly stored and furnished with merchandise
Nelcynda
Lib 4 129433 71974 14h 43m 13.57s −24° 59′ 51.8″ 5.70 0.21 409 B9.5V 53 Hydrae Gliese 570 KX 131977 73184 14h 57m 27.35s −21° 24′ 55.7″ 5.72 6.86 19 K4V
List_of_stars_in_Libra
Super-Earth orbiting Kepler-1229
named Kepler-1229, orbited by a total of one planet. The star has a mass of 0.54 M☉ and a radius of 0.51 R☉. It has a temperature of 3724 K and is about 3
Kepler-1229b
Planetary nebula in the constellation Hydra
Gliese 357 d HD 72659 b HD 74156 b c HD 82943 b c HD 86226 b HD 86264 b TW Hydrae b (unconfirmed) WASP-193b Star clusters Messier 48 Messier 68 NGC 5694 Price-Whelan
Abell_33
1976 Classical albedo feature name WGPSN Hydrae Chaos 5°54′S 300°02′E / 5.9°S 300.03°E / -5.9; 300.03 (Hydrae) 66 2014 Classical albedo feature name
List of areas of chaos terrain on Mars
List_of_areas_of_chaos_terrain_on_Mars
Star in the constellation Hydra
Gliese 357 d HD 72659 b HD 74156 b c HD 82943 b c HD 86226 b HD 86264 b TW Hydrae b (unconfirmed) WASP-193b Star clusters Messier 48 Messier 68 NGC 5694 Price-Whelan
HD_96700
Dwarfs in SDSS, 2MASS, and WISE: Discovery of a Possible L7 Member of the TW Hydrae Association". The Astronomical Journal. 150 (6): 182. arXiv:1510.08464.
List of exoplanets discovered in 2015
List_of_exoplanets_discovered_in_2015
Galaxy in the constellation Hydra
Gliese 357 d HD 72659 b HD 74156 b c HD 82943 b c HD 86226 b HD 86264 b TW Hydrae b (unconfirmed) WASP-193b Star clusters Messier 48 Messier 68 NGC 5694 Price-Whelan
Tololo_1247−232
Anglican bishop (1547–1616)
Christi imperterritus hostes Bella geras, libri sunt monumenta tui: His Hydræ fidei quotquot capita alta resurgunt, Tu novus Alcides tot resecare soles
Thomas_Bilson
Barred spiral galaxy in the constellation Hydra
Gliese 357 d HD 72659 b HD 74156 b c HD 82943 b c HD 86226 b HD 86264 b TW Hydrae b (unconfirmed) WASP-193b Star clusters Messier 48 Messier 68 NGC 5694 Price-Whelan
GAMA202627
Galaxy in the constellation Hydra
Gliese 357 d HD 72659 b HD 74156 b c HD 82943 b c HD 86226 b HD 86264 b TW Hydrae b (unconfirmed) WASP-193b Star clusters Messier 48 Messier 68 NGC 5694 Price-Whelan
TN_J0924−2201
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