Садржај
Слике
Уплоадјуј своје слике
DSS Images Other Images
Везани чланци
Hipparcos astrometry for 257 stars using Tycho-2 data
We present improved Hipparcos astrometry for 257 Hipparcos stars,resolved into 342 components. For 64 of the stars no astrometry wasobtained in the Hipparcos Catalogue, while for the remaining starsadditional components have been added by this solution or the positionshave been revised considerably. We have used the published Hipparcostransit data for the new solutions, together with results from thesecond reduction of the Tycho data for defining better initial values.Based on observations made with the ESA Hipparcos astrometry satellite.Table 3 is only available in electronic form at the CDS via anonymousftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
| UBV photometry of wide visual double stars. V. Double stars with mainly K- and M- type primaries.
We present UBV photometric observations of 55 wide visual double starswith K- and M- type primaries. Our observations have been compared andcombined with information available in the literature. At least 58% ofthem are optical pairs.
|
Додај нови чланак
Линкови у сродству са темом
Додај нови линк
Чланови следећих група \:
|
Посматрања и Астрометриски подаци
| Сазвежђа: | Јарац |
| Ректацензија: | 21h45m18.38s |
| Deклинација: | -13°40'33.4" |
| Apparent магнитуда: | 8.593 |
| Даљина: | 2000 parsecs |
| Proper motion RA: | -6.4 |
| Proper motion Dec: | 4.3 |
| B-T magnitude: | 10.402 |
| V-T magnitude: | 8.743 |
Каталог и designations:
|
