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Subject
- ephemerides1
- galactic plane1
- globular star clusters1
- horizontal branch stars1
- hst photometry1
- intergalactic medium1
- interstellar cloud1
- meridian circles1
- morgan-keenan classification1
- photographic magnitude1
- photovisual magnitude1
- ring galaxies1
- s stars1
- south galactic pole1
- star-forming regions1
- stellar ages1
- stellar evolutionary models1
- stellar radii1
- ultraviolet sources1
