z Piscium
| catalogues and names | z Psc, NSV 15259, 86 Psc, HR 361, HD 7344, SAO 109739, FK5: 1033, WDS 01137+0735A |
| constellation | Pisces |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 1h 13min 43,9sec | DEC: +7° 34' 31'' |
| position (J1900) | RA: 1h 8min 30,3sec | DEC: +7° 2' 48'' |
| proper motion (J2000) | RA: 0,144 arcsec/a | DEC: -0,056 arcsec/a |
| radial velocity | 9 km/s note: spectroscopic binaries |
|
| rotational velocity | 262 km/s (uncertain) (variable) | |
| trigonometric parallax | 0,026 arcsec | |
| note (category: dynamical parallaxes): | 0.012". |
magnitude
| visual magnitude | 5,24 (V on UBV Johnson system) |
spectral / color information
| spectral class | A7IV |
| B-V-magnitude | 0,32 |
| U-B-magnitude | 0,09 |
double/multiple star system information
| number of components of multiple star system | 5 |
| separation | 0,1 arcsec |
| mag difference (of double or brightest multiple) | 0,1 |
| component ID | O |
| note (category: double and multiple data): | CPM with HR 362 at 24". ADS 996A is close occultation double, 6.3, 6.3v, 0.05":. Component B, HR 362 is SB; C, 12.2 is 1" from B. |
| note (category: spectroscopic binaries): | ADS 996A, RV var. by 45k/s. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 1h 13min 43,887sec | DEC: +7° 34' 31,16'' | ±0,06 arcsec | source: 15 |
| proper motion (J2000) | RA: 0,0097 arcsec/a | DEC: -0,056 arcsec/a | source: 25 | |
| radial velocity | 9 km/s | source: 25 | ||
| trigonometric parallax | 0,026 | ±0,003 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 132,57° | latitude: -54,88° | ||
| GCI unit vector (J2000) | X: 0,940415 | Y: 0,313434 | Z: 0,131829 | |
magnitude:
| visual | 5,24 (observed) | source: 25 |
| photovisual | 5,6 | source: 2 |
spectral information:
| spectral class | A5 | source: 96 | |
| Morgan-Keenan | A7IV | source: 25 | |
| B-magnitude | 5,56 ±0,05 | B-V-magnitude | 0,32 |
| U-magnitude | 5,65 ±0,05 | U-B-magnitude | 0,09 |
double/multiple star system information:
| separation between brightest and second brightest component | 22,9 arcsec |
| magnitude difference between brightest and second brightest component | 1,03 |
| position angle | 63 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 5,24 | A5 | z Piscium, 86 Psc, HR 361, HD 7344, SAO 109739 |
| B | 6,3 | F8 | z Piscium, 86 Psc, HR 362, HD 7345, SAO 109740 |
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 | |
| 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 (J1950) | RA: 1h 11min 6,933sec | DEC: +7° 18' 41,34'' | ±0,004 arcsec |
| position (J2000) | RA: 1h 13min 43,886sec | DEC: +7° 34' 31,13'' | |
| proper motion J1950 (FK4) | RA: 0,0095 arcsec/a | DEC: -0,05 arcsec/a | ±0,001 arcsec/a in RA ±0,001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0,0097 arcsec/a | DEC: -0,056 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5,6 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | A5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 1033 |
| Durchmusterung | BD+06 174 |
| Boss General Catalogue | 1476 |
| Henry Draper Catalogue | 7344 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 1h 13,7min | DEC: +7° 35' |
| proper motion (J2000) | RA: 0,144 arcsec/a | DEC: -0,056 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 | 1832 | often | 64° | 23,6'' | 5,23 | 6,26 | A7IV F7V | STF 100 |
| 1986 | 63° | 22,9'' | ||||||
| BC | 1888 | 25 | 248° | 0,9'' | 6,26 | 12,2 | - | BU 1029 |
| 1987 | 78° | 1,6'' |
discoverer information:
| discoverer code | discoverer | reference |
| STF 100 | Struve, F.G.W. | - |
| BU 1029 | Burnham, S.W. | - |
notes:
| note | Zeta Psc. Both A and B are spectroscopic and occulta- tion binaries, B has P = 9.08d. BC: Single 1914 - 1951. |