designation Eta Hydri (η Hyi / η Hydri) is shared by two stars, in the constellation Hydrus: η1 Hydri, also HD 11733, a B-type main-sequence star η2 Hydri, also...

Eta2 Hydri b (η2 Hyi b, η2 Hydri b), commonly known as HD 11977 b, is an extrasolar planet that is approximately 217 light-years away in the constellation...

and shining with a magnitude of 5.7, around 488 light-years from Earth. Eta Hydri is the other optical double, composed of Eta1 and Eta2. Eta1 is a blue-white...

Eta2 Hydri is a star in the southern constellation of Hydrus. The name is Latinized from η2 Hydri and often catalogued as HD 11977. It is visible to the...

Topka, K.; et al. (1979). "Detection of soft X-rays from Alpha Lyrae and Eta Bootis with an imaging X-ray telescope". Astrophysical Journal. 229: 661...

Centaurus 4.3 G2V 2 Alpha Centauri B Centaurus 4.3 K1V 3 Tau Ceti Cetus 12 G8V 4 Eta Cassiopeiae Cassiopeia 19 G3V 5 Beta Hydri Hydrus 24 G2IV 6 Delta Pavonis...

magnitude derived from adding the magnitudes of Mizar A (2.220 ±0.003) and Mizar B (3.88) as per the formula: 2.01 ≈ − 2.5 log 10 ⁡ ( 10 − 0.4 ⋅ 2.220 + 10 −...

Long-Term Photometry and Spectroscopy of QS Telescopii, V834 Centauri, and BL Hydri". Publications of the Astronomical Society of the Pacific. 118 (843): 678–86...

2011). "Asteroseismic modelling of the solar-type subgiant star $\beta$ Hydri". Astronomy & Astrophysics. 527: A37. arXiv:1012.3872. Bibcode:2011A&A....

stars with over 1 million L☉ and visible to the naked eye: WR 22, WR 24 and Eta Carinae. All of these stars are located in the Carina nebula. Accurate measurement...

J.-P.; Gull, T.R. (1 March 2015). "3D radiative transfer simulations of Eta Carinae's inner colliding winds - I. Ionization structure of helium at apastron"...

Supplement, 19: 281, Bibcode:1970ApJS...19..281B, doi:10.1086/190209. Frost, E. B. (December 1924), "Fourteen spectroscopic binaries", Astrophysical Journal...

Bibcode:2012ApJ...760..152L. doi:10.1088/0004-637X/760/2/152. S2CID 51010785. Bok, B. J.; Bok, P. F.; Miller, E. W. (November 1972), "Photometric standards for...

children, cattle (Attic thremmata) ὑετίς huetis jug, amphora Tarentine (Attic hydris, hydria)(huetos rain) ἀγρίδιον agridion 'village' Aetolian (Attic chôrion)(Hesychius...

exoplanets around M dwarfs. A super-Earth planet orbiting HD 79211 (GJ 338 B)". Astronomy & Astrophysics. 637: A93. arXiv:2003.13052. Bibcode:2020A&A....

on 28 November 2006. Retrieved 11 December 2006. Holmberg, J.; Nordström, B.; Andersen, J. (July 2009). "The Geneva-Copenhagen survey of the solar neighbourhood...