Westerlund 1-26 (Q14914833)

time of discovery or invention

1 reference

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Westerlund 1.jpg
574 × 574; 381 KB

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catalog code

2MASS J16470540-4550367

1 reference

Gaia DR2 5940106041452150272

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discoverer or inventor

Bengt Westerlund

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1961

1 reference

Russian Wikipedia

constellation

Ara

1 reference

https://arxiv.org/abs/1309.4086

English Wikipedia

distance from Earth

11,500 light-year

2 references

reference URL

Russian Wikipedia

parallax

0.6798±0.2455 milliarcsecond

1 reference

declination component of proper motion

−4.481±0.582 milliarcsecond per year

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right ascension component of proper motion

−0.91±0.608 milliarcsecond per year

1 reference

radial velocity

−49.42±1.94 kilometre per second

1 reference

spectral class

M5-6Ia

1 reference

A serendipitous survey for variability amongst the massive stellar population of Westerlund 1

16.79

3 references

https://arxiv.org/abs/1211.5832

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

22.1

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11.2114±0.0062

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4.31±0.52

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1.35±1.32

astronomical filter

H band

1 reference

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

luminosity

340,000 solar luminosity

2 references

reference URL

https://arxiv.org/abs/1309.4086

https://arxiv.org/abs/1309.4086

Russian Wikipedia

radius

1,530 solar radius

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reference URL

1 reference

251.77252653864880 degree

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declination

−45.84350230546150 degree

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age estimated by a dating method

7.9 megaannum

1 reference