44 Cassiopeiae
catalogues and names
| catalogues and names | 44 Cas, HR 491, HD 10425, SAO 11941, BD +59 307, WDS 01433+6033A |
| constellation | Cassiopeia |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 1h 43min 19.7sec | DEC: +60° 33' 4'' | ||
| position (B1900) | RA: 1h 36min 33.2sec | DEC: +60° 2' 49'' | ||
| proper motion (J2000) | RA: 0.008 arcsec/a | DEC: -0.02 arcsec/a | ||
| radial velocity | -33 km/s note: spectroscopic binaries |
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| rotational velocity | 130 km/s | |||
| galactic coordinates | longitude: 129.27° | latitude: -1.68° | ||
magnitude
| visual magnitude | 5.78 (V on UBV Johnson system) |
spectral / color information
| spectral class | B8IIIn |
| B-V-magnitude | -0.02 |
| U-B-magnitude | -0.32 |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 66 arcsec |
| mag difference (of double or brightest multiple) | 5.1 |
| component ID | AC |
| note (category: spectroscopic binaries): | ADS 1344A. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 1h 43min 19.76sec | DEC: +60° 33' 4.72'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: 0.002 arcsec/a | DEC: -0.016 arcsec/a | source: 25 | |
| radial velocity | -33 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 129.28° | latitude: -1.68° | ||
magnitude:
| visual | 5.78 (observed) | source: 25 |
| photovisual | 5.8 | source: 2 |
| photographic | 5.7 | source: 16 |
spectral information:
| spectral class | B9 | source: 96 | |
| Morgan-Keenan | B8IIIn | source: 25 | |
| B-magnitude | 5.76 ±0.05 | B-V-magnitude | -0.02 |
| U-magnitude | 5.44 ±0.05 | U-B-magnitude | -0.32 |
double/multiple star system information:
| separation between brightest and second brightest component | 1.6 arcsec |
| magnitude difference between brightest and second brightest component | 6.3 |
| position angle | 358 ° |
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 | |
| 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: 1h 39min 55.363sec | DEC: +60° 18' 0.24'' | ±0.024 arcsec |
| position (J2000) | RA: 1h 43min 19.682sec | DEC: +60° 33' 4.28'' | |
| proper motion B1950 (FK4) | RA: 0.0012 arcsec/a | DEC: -0.014 arcsec/a | ±0.004 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0011 arcsec/a | DEC: -0.02 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | B9 |
| 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: 2086 |
| Durchmusterung | BD+59 307 |
| Boss General Catalogue | 2086 |
| Henry Draper Catalogue | 10425 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 1h 43.3min | DEC: +60° 33' |
| proper motion (J2000) | RA: 0.015 arcsec/a | DEC: -0.016 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 | 1889 | 3 | 4° | 1.7'' | 5.78 | 12.1 | B8IIIn | BU 1103 |
| 1934 | 358° | 1.6'' | ||||||
| AC | 1912 | 1 | 310° | 66'' | 5.78 | 9.6 | B8IIIn | BU 1103 |
| AD | 1912 | 1 | 229° | 140.2'' | 5.78 | 9.2 | B8IIIn | BU 1103 |
discoverer information:
| discoverer code | discoverer | reference |
| BU 1103 | Burnham, S.W. | - |
notes:
| note | 44 Cas. A is a spectroscopic binary. |