54 Piscium
catalogues and names
| catalogues and names | NSV 00245, 54 Psc, HR 166, HD 3651, SAO 74175, BD +20 85, WDS 00394+2115 |
| constellation | Pisces |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 0h 39min 21.8sec | DEC: +21° 15' 2'' | ||
| position (B1900) | RA: 0h 34min 9.5sec | DEC: +20° 42' 40'' | ||
| proper motion (J2000) | RA: -0.464 arcsec/a | DEC: -0.37 arcsec/a | ||
| radial velocity | -34 km/s note: variable radial velocity |
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| trigonometric parallax | 0.099 arcsec | |||
| galactic coordinates | longitude: 119.18° | latitude: -41.53° | ||
magnitude
| visual magnitude | 5.87 (V on UBV Johnson system) |
spectral / color information
| spectral class | K0+V |
| B-V-magnitude | 0.85 |
| U-B-magnitude | 0.57 |
| R-I-magnitude |
variability information
| variable star identification | 245 |
| note (category: variability): | 5.83 - 5.89V. |
double/multiple star system information
| separation | 122 arcsec |
| mag difference (of double or brightest multiple) | 4.9 |
| note | Worley (1978) update of the IDS |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 0h 39min 21.818sec | DEC: +21° 15' 1.59'' | ±0.2 arcsec | source: 52 |
| proper motion (J2000) | RA: -0.0326 arcsec/a | DEC: -0.372 arcsec/a | source: 25 | |
| radial velocity | -34 km/s | source: 25 | ||
| trigonometric parallax | 0.099 arcsec | ±0.01 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 119.19° | latitude: -41.53° | ||
magnitude:
| visual | 5.87 (observed) | source: 25 |
| photovisual | 6.1 | source: 2 |
| photographic | 7.1 | source: 16 |
spectral information:
| spectral class | K0 | source: 96 | |
| Morgan-Keenan | K0V | source: 25 | |
| B-magnitude | 6.72 ±0.05 | B-V-magnitude | 0.85 |
| U-magnitude | 7.29 ±0.05 | U-B-magnitude | 0.57 |
double/multiple star system information:
| separation between brightest and second brightest component | 128.6 arcsec |
| magnitude difference between brightest and second brightest component | 4.9 |
| position angle | 90 ° |
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 | |
| 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 | |
| 52 | PPMN-HP subset |
| PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H) | |
| 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: 0h 36min 45.412sec | DEC: +20° 58' 51.87'' | ±0.014 arcsec |
| position (J2000) | RA: 0h 39min 21.779sec | DEC: +21° 15' 1.69'' | |
| proper motion B1950 (FK4) | RA: -0.0331 arcsec/a | DEC: -0.366 arcsec/a | ±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0332 arcsec/a | DEC: -0.37 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6.1 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | K0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 778 |
| Durchmusterung | BD+20 85 |
| Boss General Catalogue | 778 |
| Henry Draper Catalogue | 3651 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 0h 39.4min | DEC: +21° 15' |
| proper motion (J2000) | RA: -0.458 arcsec/a | DEC: -0.371 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 |
| - | 1852 | 5 | 104° | 98.5'' | 6.1 | 11 | K0V | STT |
| 1921 | 90° | 128.6'' |
discoverer information:
| discoverer code | discoverer | reference |
| STT | Struve, O. |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 0h 36min 45.4sec | DEC: +20° 58' 52'' |
variability informations:
| magnitute at max. brightness | 5.83 |
| magnitute at min. brightness | 5.89 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K0 |
references
| to a study | 731201D (designation: HD 3651) |