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Photoelectric photometry of the early-type semi-detached binary UW Orionis
A photoelectric light curve of UW Ori is given along with a new epochformula. A preliminary photometric solution was obtained using theWilson-Devinney method of light curve synthesis. The results show thatit is an early-type, almost contact, semidetached binary of large mass,with a mass ratio 0.513. If the large mass component is a zero age mainsequence star, then the small mass component is no longer such. The O-Cin the time of minimum suggests an increasing period.
| Photoelectric Observations of UW Ori
Not Available
| Lunar occultation summary. III
Observations of 242 photoelectric lunar occultation events studied atErwin W. Fick Observatory are reported. Approximately one-fourth ofthese are reappearances. From each observation are estimated the minimummagnitude differences between the observed object and possibleundetected companions. Occultation observations are given of 23 starsbrighter than 6th mag, including Alpha Vir, Beta-1 Sco, Mu Gem, Xi-2Sgr, Zeta Tau, Lambda Gem, and Beta Cap.
| Photoelectric measurements of lunar occultations. VIII
Photoelectric timings are reported for 276 lunar occultation eventswhich were observed between March 1975 and February 1976. The timings(in UTC) are based on Loran G equipment of a lunar laser-ranging groupor on WWV signals. Angular diameters are determined for HR 5301, HD176124, Chi-1-Orionis, and HR 601. Twenty cases of possible or actualdouble stars, including Beta Capricorni, are noted along with oneprobable triple system (51 Piscium). Several technical and computationaldifficulties encountered in this program are discussed.
| Bright Late M-Type Stars Near the Galactic Equator.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1954ApJ...120..118N&db_key=AST
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Osservazione e dati astrometrici
| Costellazione: | Orione |
| Ascensione retta: | 05h55m51.74s |
| Declinazione: | +20°06'55.5" |
| Magnitudine apparente: | 9.103 |
| Moto proprio RA: | -0.1 |
| Moto proprio Dec: | -3.8 |
| B-T magnitude: | 10.16 |
| V-T magnitude: | 9.191 |
Cataloghi e designazioni:
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