c Tauri
| catalogues and names | c Tau, NSV 15957, 59 Tau, HR 1369, HD 27638, SAO 76573, WDS 04226+2538 |
| constellation | Taurus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 4h 22min 34,9sec | DEC: +25° 37' 45'' |
| position (J1900) | RA: 4h 16min 29,7sec | DEC: +25° 23' 37'' |
| proper motion (J2000) | RA: 0,017 arcsec/a | DEC: -0,023 arcsec/a |
| radial velocity | 17 km/s note: variable radial velocity |
|
| rotational velocity | 350 km/s (uncertain) (variable) | |
| note (category: radial and/or rotational velocities): | ADS 3161B, +36.8k/s. |
magnitude
| visual magnitude | 5,37 (V on UBV Johnson system) |
spectral / color information
| spectral class | B9V |
| B-V-magnitude | -0,05 |
| U-B-magnitude | -0,08 |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 19,4 arcsec |
| mag difference (of double or brightest multiple) | 3 |
| note (category: double and multiple data): | CPM. Component A suspected occultation double; component B, G2V, strong lithium. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 4h 22min 34,928sec | DEC: +25° 37' 45,82'' | ±0,2 arcsec | source: 52 |
| proper motion (J2000) | RA: 0,001 arcsec/a | DEC: -0,009 arcsec/a | source: 25 | |
| radial velocity | 17 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 171,51° | latitude: -16,74° | ||
| GCI unit vector (J2000) | X: 0,371807 | Y: 0,821378 | Z: 0,432548 | |
magnitude:
| visual | 5,37 (observed) | source: 25 |
| photovisual | 5,4 | source: 2 |
| photographic | 5,4 | source: 16 |
spectral information:
| spectral class | B9 | source: 96 | |
| Morgan-Keenan | B9V | source: 25 | |
| B-magnitude | 5,32 ±0,05 | B-V-magnitude | -0,05 |
| U-magnitude | 5,24 ±0,05 | U-B-magnitude | -0,08 |
double/multiple star system information:
| separation between brightest and second brightest component | 19,5 arcsec |
| magnitude difference between brightest and second brightest component | 3,03 |
| position angle | 25 ° |
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 (J1950) | RA: 4h 19min 32,079sec | DEC: +25° 30' 46,87'' | ±0,015 arcsec |
| position (J2000) | RA: 4h 22min 34,919sec | DEC: +25° 37' 44,99'' | |
| proper motion J1950 (FK4) | RA: 0,0013 arcsec/a | DEC: -0,021 arcsec/a | ±0,003 arcsec/a in RA ±0,002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0,0012 arcsec/a | DEC: -0,023 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5,4 (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: 5292 |
| Durchmusterung | BD+25 707 |
| Boss General Catalogue | 5292 |
| Henry Draper Catalogue | 27638 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 4h 22,6min | DEC: +25° 38' |
| proper motion (J2000) | RA: 0,019 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 |
| - | 1822 | 39 | 25° | 19,5'' | 5,4 | 8,43 | B9Vnn F8V | STF 528 |
discoverer information:
| discoverer code | discoverer | reference |
| STF 528 | Struve, F.G.W. | - |
notes:
| note | Chi Tau. Proper motion of B +032 +003. |