V0650 Cassiopeiae
catalogues and names
| catalogues and names | V0650 Cas, HR 9017, HD 223358, SAO 20866, BD +64 1861, WDS 23487+6453A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 23h 48min 39sec | DEC: +64° 52' 35'' | ||
| position (B1900) | RA: 23h 43min 48.3sec | DEC: +64° 19' 16'' | ||
| proper motion (J2000) | RA: 0.013 arcsec/a | DEC: -0.02 arcsec/a | ||
| radial velocity | -3 km/s | |||
| trigonometric parallax | 0.009 arcsec | |||
| galactic coordinates | longitude: 116.33° | latitude: 2.81° | ||
| note (category: dynamical parallaxes): | 0.006". |
magnitude
| visual magnitude | 6.41 (V on UBV Johnson system) |
spectral / color information
| spectral class | A0pSrSi:Cr: |
| B-V-magnitude | 0.06 |
| U-B-magnitude | 0.02 |
variability information
| variable star identification | V650 Cas |
| note (category: variability): | 0.9135 or 1.092d. Amp. 0.03u. |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 0.7 arcsec |
| mag difference (of double or brightest multiple) | 2 |
| component ID | AB |
| note (category: double and multiple data): | AB 6.8 A0, 7.4v, 565.77y, a = 0.74". C, 8.6v at 50" optical. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 23h 48min 39.096sec | DEC: +64° 52' 35.25'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: 0.0037 arcsec/a | DEC: -0.016 arcsec/a | source: 25 | |
| radial velocity | -3 km/s | source: 25 | ||
| trigonometric parallax | 0.009 arcsec | ±0.001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 116.33° | latitude: 2.81° | ||
magnitude:
| visual | 6.41 (observed) | source: 25 |
| photovisual | 6.4 | source: 2 |
| photographic | 6.4 | source: 16 |
spectral information:
| spectral class | A0 | source: 96 | |
| Morgan-Keenan | A0pSrSi:Cr: | source: 25 | |
| B-magnitude | 6.47 ±0.05 | B-V-magnitude | 0.06 |
| U-magnitude | 6.49 ±0.05 | U-B-magnitude | 0.02 |
variability information:
| variability type | 160 |
| var. amplitude | 0 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.7 arcsec |
| magnitude difference between brightest and second brightest component | 1.2 |
| position angle | 310 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 6.41 | A0 | HR 9017, HD 223358, SAO 20866 |
| B | 7.8 | - |
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 | |
| 16 | PPM North and PPM South Catalogs and PPM Supplement |
| Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993 | |
| 17 | ACRS |
| Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 1991 | |
| 19 | WDS Catalog |
| Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996 | |
| 25 | Bright Star Catalogue, 5th edition |
| Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994 | |
| 27 | Catalog of Red Magnitudes (CRM) |
| Warren, W.H. Jr., Northern Hemisphere Catalog of Red Magnitudes, 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: 23h 46min 12.858sec | DEC: +64° 35' 55.21'' | ±0.031 arcsec |
| position (J2000) | RA: 23h 48min 38.975sec | DEC: +64° 52' 34.61'' | |
| proper motion B1950 (FK4) | RA: 0.0019 arcsec/a | DEC: -0.014 arcsec/a | ±0.006 arcsec/a in RA ±0.005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.002 arcsec/a | DEC: -0.02 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6.4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 33045 |
| Durchmusterung | BD+64 1861 |
| Boss General Catalogue | 33045 |
| Henry Draper Catalogue | 223358 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 23h 48.7min | DEC: +64° 53' |
| proper motion (J2000) | RA: 0.023 arcsec/a | DEC: -0.017 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 |
| AB | 1843 | often | 218° | 0.4'' | 6.4 | 7.6 | - | STT 507 |
| 1992 | 310° | 0.7'' | ||||||
| AC | 1847 | 21 | 354° | 48.8'' | 6.4 | 8.6 | - | STT 507 |
| 1959 | 351° | 50.4'' | ||||||
| AD | 1916 | 1 | 109° | 51'' | - | 13 | - | FOX 278 |
discoverer information:
| discoverer code | discoverer | reference |
| STT 507 | Struve, O. | - |
| FOX 278 | Fox, P. | - |
notes:
| note | P = 566yr., a = 0.74", motion direct. Spectrum A0pSrSi:Cr:. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 23h 43.8min | DEC: +64° 20' |
magnitudes, spectral classes, orbital elements:
| author: | D.J. Zulevic |
| date of observation: | 1975 |
| magnitude of component A: | 6.9 |
| magnitude of component B: | 6.9 |
| spectral class component B: | A0p |
| spectral class component B: | A0p |
| period [y]: | 565.77 |
| semi-major axis [arcsec]: | 0.74 |
| inclination [deg]: | 52.5 |
| node [deg]: | 125 |
| eccentricity: | 0 |
| time of periastron passage: | 1699.83 |
| grade: | preliminary |
| reference: | Circ. Inf. No. 72, 1977. |
| notes | Star C (mag. 8.6, 50") is probably optical. |
| other name(s) | STT 507 |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 23h 46min 12.9sec | DEC: +64° 35' 55'' |
variability informations:
| variability type | ACV | rotating variable star |
| magnitute at max. brightness | 6.41 | |
| magnitute amplitude | 0.02 | |
| photometric system | visual, photovisual or Johnson's V |
references
| to a study | E.W.Burke, T.H.Barr, PASP 93,344,1981. |
| to a chart/photograph | no chart is avaible, but the star is contained in the 'Bonner Durchmusterung' |
miscanellous
| ID in the GCVS catalogue | 18/650 |
| constellation | Cassiopeia |
| notes on existence | The star is equivalent to '67644'. |
variability type description
| variability type | description |
| ACV | Alpha2 Canum Venaticorum variables. These are main-sequence stars with spectral types B8p-A7p and displaying strong magnetic fields. Spectra show abnormally strong lines of Si, Sr, Cr, and rare earths whose intensities vary with rotation. They exhibit magnetic field and brightness changes (periods of 0.5-160 days or more). The amplitudes of the brightness changes are usually withine 0.01-0.1 mag in V. ACVO Rapidly oscillating Alpha2 CVn variables. These are nonradially pulsating, rotating magnetic variables of Ap spectral type (DO Eri). Pulsation periods are in the range of 6-12 mmag (0.004-0.01 days), while amplitudes of light variation caused by the pulsation are about 0.01 mag in V. The pulsational variations are superposed on those caused by rotation. |