首页     开始     To Survive in the Universe    
Inhabited Sky
    News@Sky     天文图片     收集     论坛     Blog New!     常见问题     新闻     登录  

HD 142842


目录

图像

上传图像

DSS Images   Other Images


相关文章

Two-colour photometry for 9473 components of close Hipparcos double and multiple stars
Using observations obtained with the Tycho instrument of the ESAHipparcos satellite, a two-colour photometry is produced for componentsof more than 7 000 Hipparcos double and multiple stars with angularseparations 0.1 to 2.5 arcsec. We publish 9473 components of 5173systems with separations above 0.3 arcsec. The majority of them did nothave Tycho photometry in the Hipparcos catalogue. The magnitudes arederived in the Tycho B_T and V_T passbands, similar to the Johnsonpassbands. Photometrically resolved components of the binaries withstatistically significant trigonometric parallaxes can be put on an HRdiagram, the majority of them for the first time. Based on observationsmade with the ESA Hipparcos satellite.

UBV absolute CCD photometry and differential astrometry of close visual double stars, with G-type primaries
We present V magnitudes, (B-V) and (U-B) colours of close visual doublestar components, and their differences as well as separations andposition angles of 40 visual double stars. The common properties of themembers of this sample are the small angular separation rho, which isless than 7'', and the common spectral type of the primaries, which areof G-type. The observations made with the Bessel U, B and V filters,while the astrometry was performed in the V filter only. For theobservations, the CCD camera attached to the Cassegrain focus of the 90cm Dutch telescope, at La Silla, Chile, had been used. From the analysisof the data we concluded that from the sample of the fourty double starsobserved seven proved to be physical pairs, while the rest must havecommon origin components. Based on observations made at ESO La Silla,Chile. Tables 1 and 2 are only available in electronic form at the CDSvia anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

提交文章


相关链接

  • - 没有找到链接 -
提交链接


下列团体成员


观测天体数据

星座:南三角座
右阿森松:16h00m57.62s
赤纬:-65°53'45.4"
视星:9.375
距离:261.097 天文距离
右阿森松适当运动:9.9
赤纬适当运动:0.4
B-T magnitude:9.909
V-T magnitude:9.42

目录:
适当名称   (Edit)
HD 1989HD 142842
TYCHO-2 2000TYC 9048-1988-1
USNO-A2.0USNO-A2 0225-24371654
HIPHIP 78451

→ 要求更多目录从vizier