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TYC 4437-1424-1


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Correlation of the HIPPARCOS and Allegheny Observatory Parallax Catalogs
No significant difference is found between the systems of the Hipparcosand Allegheny Observatory MAP parallax catalogs. The correlation of theparallaxes of 63 stars common to both programs is 0.9995 +/- 0.0001,with an average standard deviation of the difference of 0.0023". Whilethere is no indication of systematic difference in the two programs, ourstudy suggests that the formal errors in one or both catalogs aresomewhat underestimated.

Spectral types and luminosity classifications of MAP region stars using UBVRI and DDO photometry
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1989AJ.....98.1768C&db_key=AST

An Astrometric Study of the Spectroscopic Binary ? Draconis
Abstract image available at:http://adsabs.harvard.edu/abs/1974PASP...86..448B

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观测天体数据

星座:天龍座
右阿森松:18h23m12.46s
赤纬:+72°53'40.4"
视星:9.258
右阿森松适当运动:7.3
赤纬适当运动:-6.8
B-T magnitude:9.713
V-T magnitude:9.296

目录:
适当名称   (Edit)
TYCHO-2 2000TYC 4437-1424-1
USNO-A2.0USNO-A2 1575-03955502
HIPHIP 90097

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