Contents
Images
Upload your image
DSS Images Other Images
Related articles
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
|
Submit a new article
Related links
Submit a new link
Member of following groups:
|
Observation and Astrometry data
| Constellation: | Τρόπις |
| Right ascension: | 10h20m18.84s |
| Declination: | -66°03'49.0" |
| Apparent magnitude: | 7.507 |
| Distance: | 157.729 parsecs |
| Proper motion RA: | -17.4 |
| Proper motion Dec: | 15.5 |
| B-T magnitude: | 7.614 |
| V-T magnitude: | 7.516 |
Catalogs and designations:
|
