HD 1 (Q1091618)

SB9: The ninth catalogue of spectroscopic binary orbits

1 reference

1 reference

3.0 solar mass

1 reference

Swedish Wikipedia

https://sv.wikipedia.org/w/index.php?title=HD_1&oldid=49929761

catalog code

2MASS J00050881+6750240

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AG+67 4

Astronomische Gesellschaft Katalog

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BD+67 1599

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GSC 04294-00080

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HD 1

Henry Draper Catalogue

1 reference

Hipparcos Input Catalogue

SIMBAD

HIC 422

catalog

1 reference

HIP 422

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IRAS 00025+6733

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PPM 11914

1 reference

SAO 10963

Smithsonian Astrophysical Observatory Star Catalog

1 reference

TYC 4294-80-1

1 reference

SBC9 3638

Eighth catalogue of the orbital elements of spectroscopic binary systems

1 reference

SIMBAD

Gaia DR1 528971917388852608

1 reference

Gaia DR2 528971921686610304

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1 reference

Catalan Wikipedia

distance from Earth

365.3902±4.9532 parsec

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parallax

2.7368±0.0371 milliarcsecond

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2.53±0.69 milliarcsecond

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The HIPPARCOS Catalogue

3.2±0.48 milliarcsecond

1 reference

Validation of the new Hipparcos reduction

1.97±0.26 milliarcsecond

1 reference

Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties

declination component of proper motion

−4.165±0.064 milliarcsecond per year

1 reference

−7.12±0.42 milliarcsecond per year

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Validation of the new Hipparcos reduction

−7.08±0.54 milliarcsecond per year

1 reference

The HIPPARCOS Catalogue

9±4 milliarcsecond per year

1 reference

The Proper Motions of the AGK3 R and SRS Stars

−5±7 milliarcsecond per year

1 reference

right ascension component of proper motion

AGK3

8.159±0.06 milliarcsecond per year

1 reference

6.72±0.45 milliarcsecond per year

1 reference

Validation of the new Hipparcos reduction

7.13±0.54 milliarcsecond per year

1 reference

The HIPPARCOS Catalogue

7±3 milliarcsecond per year

1 reference

The Proper Motions of the AGK3 R and SRS Stars

3±9 milliarcsecond per year

1 reference

AGK3

radial velocity

−27.33±0.48 kilometre per second

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−29.80 kilometre per second

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HD 1: The number-one star in the sky

spectral class

G9-K0IIIa

1 reference

HD 1: The number-one star in the sky

K0

1 reference

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

8.7±0.02

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7.42±0.01

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6.9591±0.0002

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5.118±0.037

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

4.548±0.04

astronomical filter

H band

1 reference

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

4.325±0.036

astronomical filter

K band

1 reference

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

absolute magnitude

−0.01

1 reference

Swedish Wikipedia

https://sv.wikipedia.org/w/index.php?title=HD_1&oldid=49929761

radius

26.64 solar radius

1 reference

Swedish Wikipedia

https://sv.wikipedia.org/w/index.php?title=HD_1&oldid=49929761

1 reference

1.28682786715430 degree

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declination

67.83999086995450 degree

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age estimated by a dating method

350 megaannum

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English Wikipedia