Gliese 229B (Q1152575)

Dwarfs Cooler than “M”: The Definition of Spectral Type “L” Using Discoveries from the 2 Micron All‐Sky Survey

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geïmporteerd uit Wikimedia-project

onderdeel van

Gliese 229

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afbeelding

Brown Dwarf Gliese 229B.jpg
800 × 565; 91 kB

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Nederlandstalige Wikipedia

massa

35 Jupitermassa

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Discovery of a cool brown dwarf

GJ 229 B

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HD 42581B

Henry Draper katalogus

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Washington Double Star Catalog

WDS J06106-2152B

catalogus

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datum van ontdekking of uitvinding

1995

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ontdekkingsmethode

direct imaging ^Engels

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sterrenbeeld

Haas

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gebaseerd op heuristiek

inferred from equatorial coordinates ^Engels

hemellichaam

HD 42581

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vermeld in referentie als

GJ 229

argument van periapsis

180 booggraad

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Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs

afstand tot Aarde

5,8 parsec

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FURTHER DEFINING SPECTRAL TYPE “Y” AND EXPLORING THE LOW-MASS END OF THE FIELD BROWN DWARF MASS FUNCTION

5,77±0,04 parsec

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THE BROWN DWARF KINEMATICS PROJECT I. PROPER MOTIONS AND TANGENTIAL VELOCITIES FOR A LARGE SAMPLE OF LATE-TYPE M, L, AND T DWARFS

M sin i

1,61971 Jupitermassa

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Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs

excentriciteit

0,03±0,2

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Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs

omlooptijd

52.890 dag

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Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs

semi-hoofdas

19,433 astronomische eenheid

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Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs

parallax

173,2±1,1 milliboogseconde

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Astrometry and Photometry for Cool Dwarfs and Brown Dwarfs

173,19±1,12 milliboogseconde

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declinatie component van eigen beweging

−714,1±0,6 milliarcsecond per year

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THE BROWN DWARF KINEMATICS PROJECT I. PROPER MOTIONS AND TANGENTIAL VELOCITIES FOR A LARGE SAMPLE OF LATE-TYPE M, L, AND T DWARFS

rechte klimming component van eigen beweging

−137±0,9 milliarcsecond per year

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THE BROWN DWARF KINEMATICS PROJECT I. PROPER MOTIONS AND TANGENTIAL VELOCITIES FOR A LARGE SAMPLE OF LATE-TYPE M, L, AND T DWARFS

spectraalklasse

T6:

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Toward Spectral Classification of L and T Dwarfs: Infrared and Optical Spectroscopy and Analysis

T7.0

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A unified near-infrared spectral classification scheme for T dwarfs

T6

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T

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T6.5

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The Spectra of T Dwarfs. I. Near‐Infrared Data and Spectral Classification

Discovery of a Brown Dwarf Companion to Gliese 570ABC: A 2MASS T Dwarf Significantly Cooler than Gliese 229B

14,01±0,05

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14,36±0,05

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14,36±0,05

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epoche

J2000.0

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THE BROWN DWARF KINEMATICS PROJECT I. PROPER MOTIONS AND TANGENTIAL VELOCITIES FOR A LARGE SAMPLE OF LATE-TYPE M, L, AND T DWARFS

rechte klimming

92,64500 booggraad

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THE BROWN DWARF KINEMATICS PROJECT I. PROPER MOTIONS AND TANGENTIAL VELOCITIES FOR A LARGE SAMPLE OF LATE-TYPE M, L, AND T DWARFS

declinatie

−21,866667 booggraad

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THE BROWN DWARF KINEMATICS PROJECT I. PROPER MOTIONS AND TANGENTIAL VELOCITIES FOR A LARGE SAMPLE OF LATE-TYPE M, L, AND T DWARFS

Encyclopædia Britannica Online-identificatiecode

Identificatiecodes

ARICNS-identificatiecode

00490

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topic/Gliese-229-B

genoemd als

Gliese 229 B

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Extrasolar Planets Encyclopaedia-identificatiecode voor exoplaneet

gj_229_b--6536

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Google Knowledge Graph-identificatiecode

/g/120x5z_b

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SIMBAD-identificatiecode

HD 42581B

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