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HD 12912


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Speckle Interferometry of Southern Double Stars. II. Measures from the CASLEO 2.15 Meter Telescope, 1995-1996
Relative astrometry is presented for 198 observations of 160 doublestars. The data were obtained at the 2.15 m telescope at the ComplejoAstronómico El Leoncito (Argentina) with a multianodemicrochannel array (MAMA) detector system. Five high-qualitynondetections are also reported. When judged against ephemeris positionsfor binaries with very well determined orbits, the separation residualsexhibit a root mean square deviation of13.2+3.4-1.9 mas and the position angle residualsexhibit rms deviation of 2.9d+0.8d-0.5d. Factorsaffecting the measurement precision are discussed.

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Observation and Astrometry data

Constellation:くじら座
Right ascension:02h05m59.35s
Declination:-22°09'02.5"
Apparent magnitude:8.226
Distance:132.45 parsecs
Proper motion RA:6
Proper motion Dec:58.3
B-T magnitude:8.776
V-T magnitude:8.272

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 12912
TYCHO-2 2000TYC 5858-110-1
USNO-A2.0USNO-A2 0675-00738240
HIPHIP 9798

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