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HD 49824


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AF Geminorum - an eclipsing triple star
AF Gem is an Algol-type eclipsing binary with a period of 1.2435 days.The period is found to have decreased slightly over the years that thisobject has been under observation. Approximately 800 observations in UBVhave been analyzed by the Wood (1972) method, and orbital elements havebeen obtained. The primary eclipse is a transit, and the eclipses arepartial. The spectral types of the components are estimated to be B9 Vand G0 IV. AF Gem has a faint visual companion situated about 2 arcsecfrom the eclipsing pair. It is most probable that this star is a memberof the system.

Lunar occultation summary. II
Results of a second series of 196 two-color photoelectric lunaroccultation observations made within the interval from May 1972 toDecember 1973 are reported. Each observation has been employed toestimate the minimum magnitude difference between the observed objectand possible undetected companions. The study contains the analyses of143 disappearances and 53 reappearances. Eighteen of these eventsmanifest some degree of multiplicity. Included in the study are 18occultation events for Pleiades members.

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Observation and Astrometry data

Constellation:Gemini
Right ascension:06h51m07.97s
Declination:+21°25'41.8"
Apparent magnitude:8.989
Distance:3030.303 parsecs
Proper motion RA:-5.7
Proper motion Dec:-5.5
B-T magnitude:9.084
V-T magnitude:8.997

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 49824
TYCHO-2 2000TYC 1343-2728-1
USNO-A2.0USNO-A2 1050-04407018
HIPHIP 32885

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