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HD 2020


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Stellar spectrophotometric standards. II
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Energy distributions in the spectra of 10 B to A stars
The energy distributions in the spectra of 10 stars of spectral classesB to A having V magnitude of about 8 m are obtained. The photometricaccuracy in tying in the absolute energy distributions in the stellarspectra to Vega averages no worse than 3-4%, which permits therecommendation of these stars as secondary spectrophotometric standards.

UBVR photometry of Seyfert galaxies
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观测天体数据

星座:雙魚座
右阿森松:00h24m36.35s
赤纬:+16°58'47.3"
视星:8.506
距离:197.239 天文距离
右阿森松适当运动:11.3
赤纬适当运动:-9
B-T magnitude:8.683
V-T magnitude:8.521

目录:
适当名称   (Edit)
HD 1989HD 2020
TYCHO-2 2000TYC 1180-502-1
USNO-A2.0USNO-A2 1050-00125413
HIPHIP 1946

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