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HD 217800


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Speckle Observations of Binary Stars with the WIYN Telescope. III. A Partial Survey of A, F, and G Dwarfs
Two hundred thirty nearby main-sequence stars with spectral types in therange of A to G have been observed by way of speckle interferometryusing the WIYN 3.5 m telescope at Kitt Peak, Arizona. The stars had noprevious mention of duplicity in the literature. Of those observed, 14showed clear evidence of a companion, and 63 were classified assuspected nonsingle based on a power spectrum analysis. The remainingstars discussed show no evidence of duplicity to the limit of thedetection system in high-quality observations. The WIYN Observatory is ajoint facility of the University of Wisconsin-Madison, IndianaUniversity, Yale University, and the National Optical AstronomyObservatory.

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Osservazione e dati astrometrici

Costellazione:Andromeda
Ascensione retta:23h02m45.62s
Declinazione:+39°53'28.1"
Magnitudine apparente:8.361
Distanza:80.972 parsec
Moto proprio RA:1.4
Moto proprio Dec:-44.2
B-T magnitude:8.852
V-T magnitude:8.402

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 217800
TYCHO-2 2000TYC 3220-389-1
USNO-A2.0USNO-A2 1275-18108475
HIPHIP 113804

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