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The Ninth Catalogue of Spectroscopic Binary Orbits(http://sb9.astro.ulb.ac.be) continues the series of compilations ofspectroscopic orbits carried out over the past 35 years by Batten andcollaborators. As of 2004 May 1st, the new Catalogue holds orbits for2386 systems. Some essential differences between this catalogue and itspredecessors are outlined and three straightforward applications arepresented: (1) completeness assessment: period distribution of SB1s andSB2s; (2) shortest periods across the H-R diagram; (3)period-eccentricity relation.
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Membro dei seguenti gruppi:
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Osservazione e dati astrometrici
| Costellazione: | Dragone |
| Ascensione retta: | 18h44m29.46s |
| Declinazione: | +56°46'43.4" |
| Magnitudine apparente: | 8.314 |
| Distanza: | 107.066 parsec |
| Moto proprio RA: | 19.9 |
| Moto proprio Dec: | 51.8 |
| B-T magnitude: | 8.888 |
| V-T magnitude: | 8.362 |
Cataloghi e designazioni:
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