Contingut
Imatges
Carregar la teva Imatge
DSS Images Other Images
Articles Relacionats
Open clusters with Hipparcos. I. Mean astrometric parameters
New memberships, mean parallaxes and proper motions of all 9 openclusters closer than 300 pc (except the Hyades) and 9rich clusters between 300 and 500 pc have been computed using Hipparcosdata. Precisions, ranging from 0.2 to 0.5 mas for parallaxes and 0.1 to0.5 mas/yr for proper motions, are of great interest for calibratingphotometric parallaxes as well as for kinematical studies. Carefulinvestigations of possible biases have been performed and no evidence ofsignificant systematic errors on the mean cluster parallaxes has beenfound. The distances and proper motions of 32 more distant clusters,which may be used statistically, are also indicated. Based onobservations made with the ESA Hipparcos astrometry satellite
|
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: | Monoceros |
| Ascensió Recta: | 06h31m36.09s |
| Declinació: | -05°22'07.4" |
| Magnitud Aparent: | 7.433 |
| Distancia: | 308.642 parsecs |
| Moviment propi RA: | -3.1 |
| Moviment propi Dec: | -0.2 |
| B-T magnitude: | 7.353 |
| V-T magnitude: | 7.427 |
Catàlegs i designacions:
|
