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HD 83325


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Catalogue of proper motions in the declination of stars of the Moscow zenith zone.
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High-resolution spectroscopy and direct imaging of the dwarf galaxy I ZW 18
Observations of the velocity profile of H-alpha emission in I Zw 18suggest that the ionized gas may form an incomplete shell, ring, ordouble structure several arcsec across. Several faint continuum objectsare noted along a line extending 1.5 arcsec northwest of the brightcondensations in I Zw 18. Results are presented for the effect ofGalactic interstellar Na I 5890-A absorption on the redshifted He I5876-A emission from I Zw 18. A helium abundance of about 0.234 + or -0.016 is implied for this object.

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Observation and Astrometry data

Constellation:Ursa Major
Right ascension:09h39m28.35s
Declination:+54°50'52.2"
Apparent magnitude:9.158
Proper motion RA:-22.5
Proper motion Dec:-26.6
B-T magnitude:9.552
V-T magnitude:9.191

Catalogs and designations:
Proper Names
HD 1989HD 83325
TYCHO-2 2000TYC 3807-447-1
USNO-A2.0USNO-A2 1425-07368715
HIPHIP 47404
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