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HD 248063


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Observations of fuors. FU Orionis during 1984-1990 - Notable variation in the brightness decline rate
Results of FU Ori photometry on Mt. Maidanak during 1984-1990 areanalyzed. In December 1987, the fuor exhibited a stepwise decrease inbrightness by 0.1 mag, after which the decrease rate of FU Oribrightness grew threefold (0.07 mag/yr compared to 0.02 mag/yr during1961-1980), while the U-B color parameter decreased to +0.82 mag. Adistance modulus of 8.1 +/- 0.2 mag is confirmed on the basis ofphotometry of 65 stars in the neighborhood of FU Ori. UBVR magnitudes ofvariable and emission-line stars in the FU Ori field are also presented;brightness variations are suspected for seven stars.

FUOR observations III. FU Orionis during 1984-1990. A remarkable change in the brightness decrease rate.
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관측 및 측정 데이터

별자리:오리온자리
적경:05h49m18.11s
적위:+08°14'42.2"
가시등급:10.54
적경상의 고유운동:-1.5
적위상의 고유운동:-2.8
B-T magnitude:10.724
V-T magnitude:10.556

천체목록:
일반명   (Edit)
HD 1989HD 248063
TYCHO-2 2000TYC 715-557-1
USNO-A2.0USNO-A2 0975-02062463
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