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Binary Star Orbits. II. Preliminary First Orbits for 117 Systems
Orbital elements are presented for 117 binary systems with no previousorbit calculation. For nearly all of these systems, these elements mustbe regarded as preliminary, but the ephemerides presented here should berelatively accurate over the next several decades. Further, the analysisof these systems should highlight the need for their continuedobservation by dedicated programs to improve the veracity of theseelements.
| ICCD speckle observations of binary stars. VIII - Measurements during 1989-1991 from the Cerro Tololo 4 M telescope
One-thousand eighty-eight observations of 947 binary star systems,observed by means of speckle interferometry with the 4 m telescope onCerro Tololo, are presented. These measurements, made during the period1989-1991, comprise the second installment of results stemming from theexpansion of our speckle program to the southern hemisphere.
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Observation and Astrometry data
| Constellation: | Vela |
| Right ascension: | 09h12m31.98s |
| Declination: | -40°31'54.5" |
| Apparent magnitude: | 8.684 |
| Distance: | 116.009 parsecs |
| Proper motion RA: | 73.3 |
| Proper motion Dec: | -101.2 |
| B-T magnitude: | 9.374 |
| V-T magnitude: | 8.741 |
Catalogs and designations:
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