n1Bootis
| catalogues and names | n1Boo, NSV 20324, 52 Boo, HR 5763, HD 138481, SAO 45580, FK5: 573 |
| constellation | Bootes |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 15h 30min 55,8sec | DEC: +40° 49' 59'' |
| position (J1900) | RA: 15h 27min 20,2sec | DEC: +41° 10' 26'' |
| proper motion (J2000) | RA: 0,011 arcsec/a | DEC: -0,007 arcsec/a |
| radial velocity | -10 km/s | |
| rotational velocity | <17 km/s (uncertain) (variable) | |
| trigonometric parallax | 0,02 arcsec | |
magnitude
| visual magnitude | 5,02 (V on UBV Johnson system) |
spectral / color information
| spectral class | K4.5IIIbBa0.4 |
| B-V-magnitude | 1,59 |
| U-B-magnitude | 1,9 |
| R-I-magnitude | 0,93 |
| note (category: spectra): | Also classified M0IIIab and K5.5Ib. |
miscellaneous information
| note (category: group membership): | UMa stream. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 15h 30min 55,762sec | DEC: +40° 49' 59,03'' | ±0,06 arcsec | source: 15 |
| proper motion (J2000) | RA: 0,001 arcsec/a | DEC: -0,007 arcsec/a | source: 25 | |
| radial velocity | -10 km/s | source: 25 | ||
| trigonometric parallax | 0,02 | ±0,002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 66,1° | latitude: 54,58° | ||
| GCI unit vector (J2000) | X: -0,458162 | Y: -0,602128 | Z: 0,653857 | |
magnitude:
| visual | 5,02 (observed) | source: 25 |
| photovisual | 5,2 | source: 2 |
| photographic | 5 | source: 16 |
spectral information:
| spectral class | K5 | source: 96 | |
| Morgan-Keenan | K4.5IIIbBa0.5 | source: 25 | |
| B-magnitude | 6,61 ±0,05 | B-V-magnitude | 1,59 |
| U-magnitude | 8,51 ±0,05 | U-B-magnitude | 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 | |
| 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 | |
| 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: 15h 29min 7,882sec | DEC: +41° 0' 9,24'' | ±0,004 arcsec |
| position (J2000) | RA: 15h 30min 55,763sec | DEC: +40° 49' 59,07'' | |
| proper motion J1950 (FK4) | RA: 0,0006 arcsec/a | DEC: -0,01 arcsec/a | ±0,001 arcsec/a in RA ±0,001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0,001 arcsec/a | DEC: -0,007 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 | K5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 573 |
| Durchmusterung | BD+41 2609 |
| Boss General Catalogue | 20866 |
| Henry Draper Catalogue | 138481 |