5 Lyn
| catalogues and names | 5 Lyn, HR 2293, HD 44708, SAO 25733, WDS 06268+5825A |
| constellation | Lynx |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 6h 26min 48,9sec | DEC: +58° 25' 2'' |
| position (J1900) | RA: 6h 18min 5sec | DEC: +58° 28' 19'' |
| proper motion (J2000) | RA: -0,005 arcsec/a | DEC: -0,009 arcsec/a |
| radial velocity | -3 km/s note: spectroscopic binaries |
|
| rotational velocity | <19 km/s | |
| trigonometric parallax | 0,005 arcsec | |
magnitude
| visual magnitude | 5,21 (V on UBV Johnson system) |
spectral / color information
| spectral class | K4III |
| B-V-magnitude | 1,53 |
| U-B-magnitude | 1,88 |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 95,4 arcsec |
| mag difference (of double or brightest multiple) | 2,6 |
| component ID | AC |
| note (category: double and multiple data): | B, 10v at 31" optical; C, G8III probably optical. D, 12v at 80". |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 6h 26min 48,884sec | DEC: +58° 25' 2,86'' | ±0,2 arcsec | source: 52 |
| proper motion (J2000) | RA: -0,0009 arcsec/a | DEC: 0,002 arcsec/a | source: 25 | |
| radial velocity | -3 km/s | source: 25 | ||
| trigonometric parallax | 0,005 | - | source: 25 | |
| galactic coord. (B1950) | longitude: 156,53° | latitude: 19,78° | ||
| GCI unit vector (J2000) | X: -0,061137 | Y: 0,520146 | Z: 0,851887 | |
magnitude:
| visual | 5,21 (observed) | source: 25 |
| photovisual | 5,5 | source: 2 |
| photographic | 6,5 | source: 16 |
spectral information:
| spectral class | K2 | source: 96 | |
| Morgan-Keenan | K4III | source: 25 | |
| B-magnitude | 6,74 ±0,05 | B-V-magnitude | 1,53 |
| U-magnitude | 8,62 ±0,05 | U-B-magnitude | 1,88 |
double/multiple star system information:
| separation between brightest and second brightest component | 31,4 arcsec |
| magnitude difference between brightest and second brightest component | 6,69 |
| position angle | 139 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 5,21 | K2 | 5 Lyn, HR 2293, HD 44708, SAO 25733 |
| B | 7,9 | G5 |
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: 6h 22min 27,087sec | DEC: +58° 26' 49,89'' | ±0,018 arcsec |
| position (J2000) | RA: 6h 26min 48,895sec | DEC: +58° 25' 1,92'' | |
| proper motion J1950 (FK4) | RA: -0,0004 arcsec/a | DEC: -0,009 arcsec/a | ±0,004 arcsec/a in RA ±0,002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0006 arcsec/a | DEC: -0,009 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5,5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | K2 |
| 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: 8287 |
| Durchmusterung | BD+58 927 |
| Boss General Catalogue | 8287 |
| Henry Draper Catalogue | 44708 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 6h 26,8min | DEC: +58° 25' |
| proper motion (J2000) | RA: -0,008 arcsec/a | DEC: 0,004 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 | 1879 | 5 | 139° | 30,3'' | 5,21 | 11,9 | K4III | S 514 |
| 1961 | - | 31,4'' | ||||||
| AC | 1879 | 6 | 272° | 96'' | 5,21 | 7,9 | - | S 514 |
discoverer information:
| discoverer code | discoverer | reference |
| S 514 | South, J. | - |
notes:
| note | 5 Lyn. A is a spectroscopic binary. |