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HD 22089


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관련 글

Evidence of decay of the magnetic fields of AP stars
Data obtained in the Geneva photometric system (Rufener, 1981) andappropriate calibrations of this system in terms of surface magneticfield and gravity are used to provide, on the basis of 708 field andcluster Ap stars, observational evidence that these stars undergo decayof their magnetic field on an evolutionary timescale. Justifications aregiven for the application of a photometric gravity calibration topeculiar stars. The dependence of the photometrically estimated surfacemagnetic field on gravity is found to differ markedly from availabletheoretical calculations. HgMn stars are found to show the same trend,strengthening the impression that they might be slightly magnetic.He-weak stars do not.

Micrometer observations of double stars.8.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1975ApJS...29..315H&db_key=AST

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관측 및 측정 데이터

별자리:페르세우스자리
적경:03h35m14.22s
적위:+42°35'26.8"
가시등급:8.956
거리:10000000 파섹
적경상의 고유운동:0.3
적위상의 고유운동:-4.9
B-T magnitude:9.106
V-T magnitude:8.969

천체목록:
일반명   (Edit)
HD 1989HD 22089
TYCHO-2 2000TYC 2870-964-1
USNO-A2.0USNO-A2 1275-02454929
HIPHIP 16729

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