Arcturus
| catalogues and names | Arcturus, a Boo, NSV 06603, 16 Boo, HR 5340, HD 124897, SAO 100944, FK5: 526 |
| other names | Haris-el-sema |
| constellation | Bootes |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | ARCTURUS; Haris-el-sema. |
position, motion, parallax:
| position (J2000) | RA: 14h 15min 39,7sec | DEC: +19° 10' 57'' |
| position (J1900) | RA: 14h 11min 6sec | DEC: +19° 42' 11'' |
| proper motion (J2000) | RA: -1,093 arcsec/a | DEC: -1,998 arcsec/a |
| radial velocity | -5 km/s note: variable radial velocity |
|
| rotational velocity | <17 km/s (uncertain) (variable) | |
| trigonometric parallax | 0,09 arcsec | |
| note (category: radial and/or rotational velocities): | Radial velocity varies in period 1.842d. |
magnitude
| visual magnitude | -0,04 (V on UBV Johnson system) |
spectral / color information
| spectral class | K1.5IIIFe-0.5 |
| B-V-magnitude | 1,23 |
| U-B-magnitude | 1,27 |
| R-I-magnitude | 0,65 |
variability information
| variable star identification | 6603 |
| note (category: variability): | H and K emission vary. |
miscellaneous information
| note (category: group membership): | Arcturus group. |
| note (category: stellar radii or diameters): | Diam. = 0.019 - 0.027". |
| note (category: miscellaneous): | High space velocity? |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 14h 15min 39,677sec | DEC: +19° 10' 56,71'' | ±0,06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0,0771 arcsec/a | DEC: -1,998 arcsec/a | source: 25 | |
| radial velocity | -5 km/s | source: 25 | ||
| trigonometric parallax | 0,09 | ±0,009 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 15,14° | latitude: 69,11° | ||
| GCI unit vector (J2000) | X: -0,783787 | Y: -0,526987 | Z: 0,328577 | |
magnitude:
| visual | -0,04 (observed) | source: 25 |
| photovisual | 0,2 | source: 2 |
spectral information:
| spectral class | K0 | source: 96 | |
| Morgan-Keenan | K1.5IIIFe-0.5 | source: 25 | |
| B-magnitude | 1,19 ±0,05 | B-V-magnitude | 1,23 |
| U-magnitude | 2,46 ±0,05 | U-B-magnitude | 1,27 |
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 (J1950) | RA: 14h 13min 22,75sec | DEC: +19° 26' 30,95'' | ±0,003 arcsec |
| position (J2000) | RA: 14h 15min 39,687sec | DEC: +19° 10' 56,77'' | |
| proper motion J1950 (FK4) | RA: -0,0776 arcsec/a | DEC: -1,999 arcsec/a | ±0,001 arcsec/a in RA ±0,001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,077 arcsec/a | DEC: -1,998 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 0,2 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | K0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 526 |
| Durchmusterung | BD+19 2777 |
| Boss General Catalogue | 19242 |
| Henry Draper Catalogue | 124897 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (J1950) | RA: 14h 13min 22,7sec | DEC: +19° 26' 31'' |
variability informations:
| magnitute at max. brightness | -0,13 |
| magnitute at min. brightness | -0,03 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K2 |
references
| to a study | 0138D (designation: 252) |