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HD 154357


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관련 글

A photometric study of K and M dwarf stars found by Stephenson
Broadband photometry has been obtained for a sample of the K and M dwarfstars found in an objective prism survey by Stephenson (1986). Among thestars with unknown proper motion, about 24 percent of those observedappear from the photometry not to be dwarfs, although the percentagevaries considerably with spectral type. For stars with V less than 11.5and B - V equal to or greater than 1.2, it is estimated that, within thearea surveyed, Stephenson's survey is about 68 percent complete.

Dwarf K and M stars of small proper motion found in a large spectroscopic survey
More than 2000 candidates for K and M dwarf status, generally havingproper motions that are either unknown or less than 0.2 arcsec perannum, have been identified in an objective-prism survey covering theentire sky north of declination - 25 degrees and more than 10 degreesfrom the galactic plane. More than 95 percent have no previousindication that they are dwarfs. Several dozen appear to be visualdouble stars.

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관측 및 측정 데이터

별자리:헤르쿨레스자리
적경:17h04m18.92s
적위:+20°02'53.1"
가시등급:8.292
거리:740.741 파섹
적경상의 고유운동:-10.9
적위상의 고유운동:6.1
B-T magnitude:10.189
V-T magnitude:8.449

천체목록:
일반명   (Edit)
HD 1989HD 154357
TYCHO-2 2000TYC 1543-5-1
USNO-A2.0USNO-A2 1050-08334902
HIPHIP 83531

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