(Q3781356)

HD 57821

Henry Draper Catalogue

1 reference

SAO 152776

Smithsonian Astrophysical Observatory Star Catalog

1 reference

HIP 35727

1 reference

2MASS J07221353-1900598

1 reference

GSC 05974-03954

1 reference

ALS 17342

Catalog of Galactic OB Stars

1 reference

BD-18 1806

1 reference

CEL 1805

Celescope Catalogue of Ultraviolet Magnitudes

1 reference

FK5 2570

1 reference

GC 9836

Boss General Catalogue

1 reference

GCRV 4894

General Catalogue of Stellar Radial Velocities

1 reference

HIC 35727

Hipparcos Input Catalogue

1 reference

JP11 1543

1 reference

PMC 90-93 1260

Tokyo Photoelectric Meridian Circle Catalog

1 reference

PPM 218547

1 reference

ROT 1190

Catalogue of rotational velocities of the stars

1 reference

TD1 9935

TD1 Catalog of Stellar Ultraviolet Fluxes

1 reference

TYC 5974-3954-1

1 reference

UBV 7150

UBV Photoelectric Photometry Catalogue

1 reference

UBV M 13227

Photoelectric catalogue, magnitudes and colors of stars in the UBV and UCBV systems

1 reference

uvby98 100057821

uvbyβ Photoelectric Photometric Catalogue

1 reference

YZ 108 2925

Yale Observatory Zone Catalog

1 reference

WEB 7119

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

1 reference

Gaia DR2 2930559063426460544

1 reference

1 reference

186.1816±9.1235 parsec

1 reference

stellar rotational velocity

100 kilometre per second

1 reference

Rotational Velocities of B Stars

117 kilometre per second

1 reference

Catalogue of rotational velocities of the stars

parallax

5.3711±0.2632 milliarcsecond

1 reference

6.31±0.69 milliarcsecond

1 reference

The HIPPARCOS Catalogue

6.78±0.26 milliarcsecond

1 reference

declination component of proper motion

−6.702±0.39 milliarcsecond per year

1 reference

−6.91±0.25 milliarcsecond per year

1 reference

−6.43±0.62 milliarcsecond per year

1 reference

The HIPPARCOS Catalogue

−6 milliarcsecond per year

1 reference

right ascension component of proper motion

−1.178±0.427 milliarcsecond per year

1 reference

−1.69±0.19 milliarcsecond per year

1 reference

−1.66±0.56 milliarcsecond per year

1 reference

The HIPPARCOS Catalogue

9 milliarcsecond per year

1 reference

radial velocity

27.0 kilometre per second

1 reference

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

27±2 kilometre per second

1 reference

General Catalogue of Stellar Radial Velocities

32.9±1.6 kilometre per second

1 reference

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

27.7 kilometre per second

1 reference

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

26.0 kilometre per second

1 reference

Catalogue of observed velocities

32.1 kilometre per second

1 reference

Radial velocities of 368 helium stars

spectral class

B5II/III

1 reference

Catalogue of two-dimensional spectral types for the HD stars, Vol.4

B7IV

1 reference

Spectral classification of the bright B8 stars

B8

1 reference

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

4.53

1 reference

Catalog of Galactic OB Stars

4.893±0.014

1 reference

4.95±0.009

1 reference

4.8957±0.0045

1 reference

5.035±0.037

1 reference

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

5.022±0.029

astronomical filter

H band

1 reference

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

4.988±0.02

astronomical filter

K band

1 reference

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

absolute magnitude

−0.90

1 reference

imported from Wikimedia project

Swedish Wikipedia

Wikimedia import URL

https://sv.wikipedia.org/w/index.php?title=HD_57821&oldid=48918198

radius

4.7 solar radius

1 reference

imported from Wikimedia project

Swedish Wikipedia

Wikimedia import URL

https://sv.wikipedia.org/w/index.php?title=HD_57821&oldid=48918198

epoch

J2000.0

1 reference

right ascension

110.55637087750 degree

1 reference

declination

−19.01660127750 degree

1 reference

effective temperature

13,323 kelvin

1 reference

An empirical temperature calibration for the Δ a photometric system . I. The B-type stars

12,445 kelvin

1 reference