Contingut
Imatges
Carregar la teva Imatge
DSS Images Other Images
Articles Relacionats
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.
|
Enviar un nou article
Enllaços Relacionats
- - No s'ha trobat enllaços -
Enviar un nou enllaç
Membre dels grups següents:
|
Dades d'Observació i Astrometria
| Constel·lació: | Eridanus |
| Ascensió Recta: | 03h22m06.32s |
| Declinació: | -13°16'23.2" |
| Magnitud Aparent: | 8.798 |
| Distancia: | 386.1 parsecs |
| Moviment propi RA: | 6.9 |
| Moviment propi Dec: | -14 |
| B-T magnitude: | 10.249 |
| V-T magnitude: | 8.918 |
Catàlegs i designacions:
|
