(Q3304606)

New Catalogue of Suspected Variable Stars

1 reference

1 reference

Washington Double Star Catalog

catalog code

HR 1046

Bright Star Catalogue

1 reference

Smithsonian Astrophysical Observatory Star Catalog

2MASS J03300015+5527065

1 reference

GSC 03707-00802

1 reference

HD 21447

Henry Draper Catalogue

1 reference

HIP 16292

1 reference

SAO 24064

1 reference

IRAS 03261+5516

1 reference

ADS 2565 A

Aitken Double Star Catalogue

1 reference

AG+55 344

Astronomische Gesellschaft Katalog

1 reference

BD+54 684

1 reference

CCDM J03300+5527A

Catalog of Components of Double and Multiple Stars

1 reference

CSI+54 684 2

Catalog of Stellar Identifications

1 reference

CSI+54 684 4

Catalog of Stellar Identifications

1 reference

CSV 100281

Catalogue of suspected variable stars

1 reference

GC 4146

Boss General Catalogue

1 reference

GCRV 1916

General Catalogue of Stellar Radial Velocities

1 reference

HIC 16292

Hipparcos Input Catalogue

1 reference

IDS 03224+5506 A

Index Catalogue of Visual Double Stars

1 reference

JP11 785

1 reference

NSV 1159

New Catalogue of Suspected Variable Stars

1 reference

PLX 722

General Catalogue of Trigonometric Stellar Parallaxes

1 reference

PPM 28513

1 reference

ROT 497

Catalogue of rotational velocities of the stars

1 reference

TD1 2209

TD1 Catalog of Stellar Ultraviolet Fluxes

1 reference

TYC 3707-802-1

1 reference

UBV 3320

UBV Photoelectric Photometry Catalogue

1 reference

UBV 3322

UBV Photoelectric Photometry Catalogue

1 reference

uvby98 100021447

uvbyβ Photoelectric Photometric Catalogue

1 reference

WDS J03300+5527A

Washington Double Star Catalog

1 reference

WEB 3107

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

1 reference

https://vizier.u-strasbg.fr/viz-bin/VizieR-5?-ref=VIZ62716da6840d6&-out.add=.&-source=VI/42/out&-c=050.1173%20%2b55.0167,eq=B1875,rs=2

Gaia DR2 448233374109147264

1 reference

1 reference

distance from Earth

59.4092±0.5961 parsec

1 reference

stellar rotational velocity

191 kilometre per second

2 references

Rotational velocities of A-type stars. III. Velocity distributions

Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i

175 kilometre per second

1 reference

The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars

parallax

16.8324±0.1689 milliarcsecond

1 reference

17.07±0.69 milliarcsecond

1 reference

The HIPPARCOS Catalogue

16.42±0.29 milliarcsecond

1 reference

Validation of the new Hipparcos reduction

declination component of proper motion

−12.567±0.299 milliarcsecond per year

1 reference

−11.07±0.3 milliarcsecond per year

1 reference

Validation of the new Hipparcos reduction

−11.77±0.73 milliarcsecond per year

1 reference

right ascension component of proper motion

The HIPPARCOS Catalogue

−46.265±0.412 milliarcsecond per year

1 reference

−46.08±0.27 milliarcsecond per year

1 reference

Validation of the new Hipparcos reduction

−45.38±0.66 milliarcsecond per year

1 reference

The HIPPARCOS Catalogue

radial velocity

0.3 kilometre per second

1 reference

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

0.3±2 kilometre per second

1 reference

General Catalogue of Stellar Radial Velocities

−1.9±0.9 kilometre per second

1 reference

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

spectral class

A1V

1 reference

A1Va

1 reference

The early A type stars: refined MK classification, confrontation with Stromgren photometry, and the effects of rotation

A2

1 reference

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

5.16±0.01

1 reference

UBV photometry of stars whose positions are accurately known. VII

5.14±0.007

B band

1 reference

UBV photometry of stars whose positions are accurately known. VII

5.09±0.009

V band

1 reference

UBV photometry of stars whose positions are accurately known. VII

5.01

R band

1 reference

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

5.02

I band

1 reference

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

5.0618±0.0026

1 reference

5.22

1 reference

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

5.06±0.036

H band

1 reference

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

4.996±0.018

K band

1 reference

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

absolute magnitude

1.17

1 reference

imported from Wikimedia project

Swedish Wikipedia

Wikimedia import URL

https://sv.wikipedia.org/w/index.php?title=HD_21447&oldid=50142897

1 reference

52.50076446176200 degree

1 reference

declination

55.45180943613190 degree

1 reference

effective temperature

9,240 kelvin

1 reference

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

9,078 kelvin

1 reference