Zaniah
catalogues and names
| catalogues and names | Zaniah, h Vir, NSV 05555, 15 Vir, HR 4689, HD 107259, SAO 138721, BD +0 2926, FK5: 460, WDS 12199-0040 |
| constellation | Virgo |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Zaniah. |
position, motion, parallax:
| position (J2000) | RA: 12h 19min 54.4sec | DEC: -0° 40' 1'' | ||
| position (B1900) | RA: 12h 14min 47.3sec | DEC: -0° 6' 40'' | ||
| proper motion (J2000) | RA: -0.063 arcsec/a | DEC: -0.018 arcsec/a | ||
| radial velocity | 2 km/s note: spectroscopic binaries, double lined spectra note: orbital data avaible |
|||
| rotational velocity | 34 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.016 arcsec | |||
| galactic coordinates | longitude: 286.4° | latitude: 61.19° | ||
magnitude
| visual magnitude | 3.89 (V on UBV Johnson system) |
spectral / color information
| spectral class | A2IV |
| B-V-magnitude | 0.02 |
| U-B-magnitude | 0.06 |
| R-I-magnitude |
variability information
| variable star identification | 5555 |
| note (category: variability): | Delta Sct? |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 0 arcsec |
| mag difference (of double or brightest multiple) | 0.5 |
| note | doublicity discoverd by occultation |
| note (category: double and multiple data): | 4.9, 5.4, sep. 0.008". Also astrometric and interferometric double, 5.4v sep. 0.124", position angle changed 35d in 1.5yrs. |
| note (category: spectroscopic binaries): | 71.9d, K 30.5k/s, V0 +5.3k/s, msin3i 1.49, asini 28.4. Resolved by speckle interferometry at 4-meter Mayall telescope, sep. 0.12"; also resolved 1980.47, sep. 0.085"; 1981.24, sep. 0.109"; 1982.17, sep. 0.124"; 1983.10, sep. 0.14"; 1986.45, sep. 0.09". |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 12h 19min 54.358sec | DEC: -0° 40' 0.51'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0042 arcsec/a | DEC: -0.018 arcsec/a | source: 25 | |
| radial velocity | 2 km/s | source: 25 | ||
| trigonometric parallax | 0.016 arcsec | ±0.002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 286.42° | latitude: 61.19° | ||
magnitude:
| visual | 3.89 (observed) | source: 25 |
| photovisual | 4 | source: 2 |
spectral information:
| spectral class | A0 | source: 96 | |
| Morgan-Keenan | A2IV+A4V | source: 25 | |
| B-magnitude | 3.91 ±0.05 | B-V-magnitude | 0.02 |
| U-magnitude | 3.97 ±0.05 | U-B-magnitude | 0.06 |
sources:
| 2 | HD and HDE Catalogs |
| Cannon, A.J., and E.C. Pickering, Harvard Annals, Vols 91-99, 1918-24, Cambridge, Massachusetts: Harvard University; Cannon, A.J., Harvard Annals, Vol. 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. 112, 1949, Cambridge, Massachusetts: Harvard University | |
| 15 | FK5, FK5 Extension and FK5 Supplement |
| Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991 | |
| 25 | Bright Star Catalogue, 5th edition |
| Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994 | |
| 96 | SAO or HD/HDE Catalog |
| Reference from Value 1 or Reference from Value 2 | |
data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)
position and proper motion:
| position (B1950) | RA: 12h 17min 20.761sec | DEC: -0° 23' 20.65'' | ±0.004 arcsec |
| position (J2000) | RA: 12h 19min 54.366sec | DEC: -0° 40' 0.49'' | |
| proper motion B1950 (FK4) | RA: -0.0043 arcsec/a | DEC: -0.022 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0041 arcsec/a | DEC: -0.018 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | A0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 460 |
| Durchmusterung | BD+00 2926 |
| Boss General Catalogue | 16813 |
| Henry Draper Catalogue | 107259 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 12h 19.9min | DEC: -0° 40' |
| proper motion (J2000) | RA: -0.063 arcsec/a | DEC: -0.018 arcsec/a |
double/multiple star system information:
| component | year | number of measures | position angle | angular separation | magnitude of 1st component | magnitude of 2nd component | spectral class(es) | discoverer code |
| - | 1976 | 43 | ° | '' | 3.89 | - | A2IV | MCA 37 |
discoverer information:
| discoverer code | discoverer | reference |
| MCA 37 | McAlister, H.A. | - |
notes:
| note | Eta Vir. A spectroscopic and occultation binary now resolved by speckle interferometry: P = 13.1yr., a = 0.136", motion direct. |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 12h 17min 20.8sec | DEC: -0° 23' 21'' |
variability informations:
| magnitute at max. brightness | 3.86 |
| magnitute at min. brightness | 3.93 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | A2 |
references
| to a study | 0807D (designation: 45G VIR) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |