x Leonis
catalogues and names
| catalogues and names | x Leo, NSV 04518, 5 Leo, HR 3782, HD 82395, SAO 98627, BD +11 2053, FK5: 1246 |
| constellation | Leo |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 9h 31min 56.7sec | DEC: +11° 17' 59'' | ||
| position (B1900) | RA: 9h 26min 33.3sec | DEC: +11° 44' 34'' | ||
| proper motion (J2000) | RA: -0.094 arcsec/a | DEC: -0.082 arcsec/a | ||
| radial velocity | 29 km/s note: variable radial velocity |
|||
| rotational velocity | <19 km/s | |||
| trigonometric parallax | 0.028 arcsec | |||
| galactic coordinates | longitude: 221.56° | latitude: 40.68° | ||
magnitude
| visual magnitude | 4.97 (V on UBV Johnson system) |
spectral / color information
| spectral class | K0-III-IIIb |
| B-V-magnitude | 1.05 |
| U-B-magnitude | 0.86 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | 4518 |
double/multiple star system information
| separation | 0 arcsec |
| mag difference (of double or brightest multiple) | 1.9 |
| note | doublicity discoverd by occultation |
| note (category: double and multiple data): | Suspected occultation double. |
| note (category: spectroscopic binaries): | Suspected SB, 5.3, 7.2, sep. 0.0066". |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 9h 31min 56.738sec | DEC: +11° 17' 59.26'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0064 arcsec/a | DEC: -0.082 arcsec/a | source: 25 | |
| radial velocity | 29 km/s | source: 25 | ||
| trigonometric parallax | 0.028 arcsec | ±0.003 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 221.57° | latitude: 40.68° | ||
magnitude:
| visual | 4.97 (observed) | source: 25 |
| photovisual | 5.1 | source: 2 |
spectral information:
| spectral class | G5 | source: 96 | |
| Morgan-Keenan | G9.5III | source: 25 | |
| B-magnitude | 6.02 ±0.05 | B-V-magnitude | 1.05 |
| U-magnitude | 6.88 ±0.05 | U-B-magnitude | 0.86 |
double/multiple star system information:
| separation between brightest and second brightest component | 0 arcsec |
| magnitude difference between brightest and second brightest component | 1.9 |
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 | |
| 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: 9h 29min 15.137sec | DEC: +11° 31' 20.05'' | ±0.004 arcsec |
| position (J2000) | RA: 9h 31min 56.749sec | DEC: +11° 17' 59.27'' | |
| proper motion B1950 (FK4) | RA: -0.0063 arcsec/a | DEC: -0.086 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0062 arcsec/a | DEC: -0.082 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.1 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | G5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 1246 |
| Durchmusterung | BD+11 2053 |
| Boss General Catalogue | 13149 |
| Henry Draper Catalogue | 82395 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 9h 29min 15.1sec | DEC: +11° 31' 20'' |
variability informations:
| variability type | - |
| magnitute at max. brightness | 4.97 |
| magnitute at min. brightness | |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K0 |
references
| to a study | 290477D (designation: ZI 762) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |