Eta Hydrae (Q1028333)

HR 3454

Bright Star Catalogue

1 reference

IRAS 08406+0334

1 reference

2MASS J08431347+0323552

1 reference

GSC 00215-02021

1 reference

η Hya

1 reference

Catalogue of suspected variable stars

BD+03 2039

1 reference

CSV 100996

1 reference

FK5 2687

1 reference

GC 11987

Boss General Catalogue

1 reference

GCRV 5754

General Catalogue of Stellar Radial Velocities

1 reference

HIC 42799

Hipparcos Input Catalogue

1 reference

JP11 1702

1 reference

N30 2036

Catalog of 5,268 Standard Stars Based on the Normal System N30

1 reference

NSV 4212

New Catalogue of Suspected Variable Stars

1 reference

PPM 154889

1 reference

ROT 1369

Catalogue of rotational velocities of the stars

1 reference

TD1 12946

TD1 Catalog of Stellar Ultraviolet Fluxes

1 reference

TYC 215-2021-1

1 reference

UBV 8422

UBV Photoelectric Photometry Catalogue

1 reference

TIC 262533375

1 reference

eta Hya

General Catalogue of Variable Stars

1 reference

YZ 3 3499

Yale Observatory Zone Catalog

1 reference

uvby98 100074280

uvbyβ Photoelectric Photometric Catalogue

1 reference

WEB 8265

Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue

1 reference

UBV Photoelectric Photometry Catalogue

Gaia DR2 3079329270187691008

1 reference

7 Hya

Flamsteed designation

0 references

Gaia DR3 3079329274484276480

1 reference

AAVSO 0838+03

1 reference

AG+03 1197

1 reference

UBV M 14621

1 reference

1 reference

inferred from equatorial coordinates

distance from Earth

131.3577±6.0685 parsec

1 reference

stellar rotational velocity

132 kilometre per second

1 reference

Catalogue of rotational velocities of the stars

135 kilometre per second

1 reference

A catalogue of stellar rotational velocities

95 kilometre per second

1 reference

Rotational Velocities of B Stars

99.2±5 kilometre per second

1 reference

New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?

parallax

7.6128±0.3517 milliarcsecond

1 reference

6.99±0.92 milliarcsecond

1 reference

The HIPPARCOS Catalogue

5.56±0.24 milliarcsecond

1 reference

declination component of proper motion

−0.995±0.451 milliarcsecond per year

1 reference

−1.08±0.2 milliarcsecond per year

1 reference

−1.29±0.63 milliarcsecond per year

1 reference

The HIPPARCOS Catalogue

−34±8 milliarcsecond per year

1 reference

AGK3

−5 milliarcsecond per year

1 reference

right ascension component of proper motion

−19.543±0.571 milliarcsecond per year

1 reference

−19.39±0.27 milliarcsecond per year

1 reference

−19.14±1.04 milliarcsecond per year

1 reference

The HIPPARCOS Catalogue

−48±8 milliarcsecond per year

1 reference

AGK3

−18 milliarcsecond per year

1 reference

−24 milliarcsecond per year

1 reference

Catalog of 5268 standard stars for the equinox and epoch 1950.0 based on the Normal Star System N30

radial velocity

21.0 kilometre per second

1 reference

Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue

21±5 kilometre per second

1 reference

General Catalogue of Stellar Radial Velocities

16.1±0.3 kilometre per second

1 reference

Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system

16.8 kilometre per second

1 reference

Sixth catalogue of fundamental stars (FK6). Part III. Additional stars with direct solutions

17.1 kilometre per second

1 reference

Radial velocities of 25 bright B3V stars

7.4 kilometre per second

1 reference

The radial velocities of 523 O and B type stars obtained at Victoria, 1923-1929

23.8 kilometre per second

1 reference

Radial velocities of 368 helium stars

12.0 kilometre per second

2 references

Eight stars whose radial velocities vary

28 kilometre per second

1 reference

type of variable star

Beta Cephei variable

1 reference

English Wikipedia

spectral class

B3V

3 references

Spectroscopic analysis of southern B and Be stars

Line strengths for southerns OB stars. II. Observations with moderate dispersion

Application of convolutional neural networks for stellar spectral classification

B4V

1 reference

The kinematics of the Gould belt: an expanding group ?

B3 V SB

24 references

Photoelectric measures of the 4430 A diffuse interstellar band

Spectrophotometric measurements of early type stars. VI. Results and discussion for 25 stars of MK type B3

Three-colour photometry in the Southern Coalsack

Standard stars for spectral classification

On the precision of the determination of spectral classes and colour excesses of O-A2 stars by the methods of two color diagrams

Spectral types of bright southern stars

A two-dimensionnal quantitative spectral classification of 283 O5-B7 stars and the construction of a spectrum-absolute magnitude diagram

The equivalent widths of absorption lines in the spectra of 109 O5-B7stars

Two-dimensional spectral classification by narrow-band photometry for B stars in clusters and associations

A system of three-color photometry, with applications to galactic structure in Cygnus

Southern hemisphere photometry. II. Photoelectric measures of bright stars

Photoelectric spectrophotometry. I. Hydrogen line intensities of O, B and A type stars

Axial Rotation and Line Broadening in Stars of Spectral Types F0-K5

The color-luminosity array for some galactic clusters

Magnitudes and colors for 833 Northern and Southern stars

Three-color observations of 108 stars intended for use as photometric standards

A study of the Orion aggregate of early-type stars. II

Red and infrared magnitudes for 138 stars observed as photometric standards

Some characteristics of color systems

Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas

A study of the Orion aggregate of early-type stars

The intensity of certain lines of He I in the B stars

Relative gradients for 166 southern stars

The color-magnitude array for the galactic cluster NGC 2362

B3

1 reference

VizieR Online Data Catalog: Henry Draper Catalogue and Extension, published in Ann. Harvard Obs. 91-100 (1918-1925)

B3VSB

25 references

Photoelectric measures of the 4430 A diffuse interstellar band

Photoeletric measures of hydrogen-line absorption in early-type stars

Spectrophotometric measurements of early type stars. VI. Results and discussion for 25 stars of MK type B3

Three-colour photometry in the Southern Coalsack

Standard stars for spectral classification

On the precision of the determination of spectral classes and colour excesses of O-A2 stars by the methods of two color diagrams

Spectral types of bright southern stars

A two-dimensionnal quantitative spectral classification of 283 O5-B7 stars and the construction of a spectrum-absolute magnitude diagram

The equivalent widths of absorption lines in the spectra of 109 O5-B7stars

Two-dimensional spectral classification by narrow-band photometry for B stars in clusters and associations

A system of three-color photometry, with applications to galactic structure in Cygnus

Southern hemisphere photometry. II. Photoelectric measures of bright stars

Photoelectric spectrophotometry. I. Hydrogen line intensities of O, B and A type stars

Axial Rotation and Line Broadening in Stars of Spectral Types F0-K5

The color-luminosity array for some galactic clusters

Magnitudes and colors for 833 Northern and Southern stars

Three-color observations of 108 stars intended for use as photometric standards

A study of the Orion aggregate of early-type stars. II

Red and infrared magnitudes for 138 stars observed as photometric standards

Some characteristics of color systems

Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas

A study of the Orion aggregate of early-type stars

The intensity of certain lines of He I in the B stars

Relative gradients for 166 southern stars

The color-magnitude array for the galactic cluster NGC 2362

UBV photometry of stars whose positions are accurately known

3.38±0.01

1 reference

UBV photometry of stars whose positions are accurately known. VII

4.1±0.007

1 reference

UBV photometry of stars whose positions are accurately known. VII

4.3±0.009

1 reference

Catalogue of Stellar Photometry in Johnson's 11-color system

4.37

1 reference

Catalogue of Stellar Photometry in Johnson's 11-color system

4.56

1 reference

4.2145±0.0032

1 reference

Catalogue of Stellar Photometry in Johnson's 11-color system

4.70

1 reference

VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)

4.84±0.033

1 reference

VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)

4.8±0.023

1 reference

luminosity

2,680 solar luminosity

1 reference

https://es.wikipedia.org/w/index.php?title=Eta_Hydrae&oldid=124159638

Spanish Wikipedia

Wikimedia import URL

absolute magnitude

−1.48

1 reference

https://sv.wikipedia.org/w/index.php?title=Eta_Hydrae&oldid=46149296

Swedish Wikipedia

Wikimedia import URL

radius

3.9 solar radius

1 reference

https://sv.wikipedia.org/w/index.php?title=Eta_Hydrae&oldid=46149296

Swedish Wikipedia

Wikimedia import URL

epoch

J2000.0

2 references

right ascension

130.80614580292 degree

1 reference

declination

3.39866297528 degree

1 reference

effective temperature

19,410 kelvin

1 reference

Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff

18,000 kelvin

1 reference

Spectroscopic analysis of southern B and Be stars

16,154 kelvin

1 reference

New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?

surface gravity

10,000 centimetre per square second

1 reference

Spectroscopic analysis of southern B and Be stars