Alkalurops
catalogues and names
| catalogues and names | Alkalurops, m1Boo, NSV 07063, 51 Boo, HR 5733, HD 137391, SAO 64686, BD +37 2636, FK5: 568, WDS 15245+3723A |
| other names | Inkalunis, Icalurus, Clava, Venabulum |
| constellation | Bootes |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Alkalurops; Inkalunis; Icalurus; Clava; Venabulum. |
position, motion, parallax:
| position (J2000) | RA: 15h 24min 29,4sec | DEC: +37° 22' 38'' | ||
| position (2001,08) | RA: 15h 24min 31sec | DEC: +37° 22' 25'' | ||
| position (B1900) | RA: 15h 20min 42,7sec | DEC: +37° 43' 40'' | ||
| proper motion (J2000) | RA: -0,146 arcsec/a | DEC: 0,087 arcsec/a | ||
| radial velocity | -13 km/s note: spectroscopic binaries |
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| rotational velocity | 84 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0,039 arcsec | |||
| galactic coordinates | longitude: 60,39° | latitude: 56,31° | ||
magnitude
| visual magnitude | 4,31 (V on UBV Johnson system) |
spectral / color information
| spectral class | F2IVa |
| B-V-magnitude | 0,31 |
| U-B-magnitude | 0,07 |
| R-I-magnitude |
variability information
| variable star identification | 7063 |
| note (category: variability): | Delta Sct? |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 108,9 arcsec |
| mag difference (of double or brightest multiple) | 2,2 |
| component ID | AxBC |
| note (category: double and multiple data): | Probably binary with HR 5734, a close binary ADS 9626BC. |
| note (category: spectroscopic binaries): | ADS 9626A, 298.75d. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 15h 24min 29,434sec | DEC: +37° 22' 37,79'' | ±0,06 arcsec | source: 15 |
| position (2001,08) | RA: 15h 24min 31sec | DEC: +37° 22' 25'' | JD: 2451938,14 | |
| proper motion (J2000) | RA: -0,0122 arcsec/a | DEC: 0,087 arcsec/a | source: 25 | |
| radial velocity | -13 km/s | source: 25 | ||
| trigonometric parallax | 0,039 arcsec | ±0,004 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 60,39° | latitude: 56,31° | ||
magnitude:
| visual | 4,31 (observed) | source: 25 |
| photovisual | 4,5 | source: 2 |
spectral information:
| spectral class | F0 | source: 96 | |
| Morgan-Keenan | F2IVa | source: 25 | |
| B-magnitude | 4,62 ±0,05 | B-V-magnitude | 0,31 |
| U-magnitude | 4,69 ±0,05 | U-B-magnitude | 0,07 |
double/multiple star system information:
| separation between brightest and second brightest component | 0,1 arcsec |
| position angle | 280 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 4,31 | F0 | Alkalurops, m1Bootis, 51 Boo, HR 5733, HD 137391, SAO 64686 |
| B | 6,5 | K0 | m2Bootis, 51 Boo, HR 5734, HD 137392, SAO 64687 |
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 | |
| 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 | |
| 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: 15h 22min 35,995sec | DEC: +37° 33' 5,49'' | ±0,005 arcsec |
| position (2001,08) | RA: 15h 24min 33sec | DEC: +37° 22' 19'' | JD: 2451938,14 |
| position (J2000) | RA: 15h 24min 29,445sec | DEC: +37° 22' 37,76'' | |
| proper motion B1950 (FK4) | RA: -0,0124 arcsec/a | DEC: 0,084 arcsec/a | ±0,001 arcsec/a in RA ±0,001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0121 arcsec/a | DEC: 0,087 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4,5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | F0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 568 |
| Durchmusterung | BD+37 2636 |
| Boss General Catalogue | 20724 |
| Henry Draper Catalogue | 137391 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 15h 24,5min | DEC: +37° 23' |
| proper motion (J2000) | RA: -0,146 arcsec/a | DEC: 0,087 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 |
| Aa | 1988 | 2 | 350° | 0,1'' | 4,31 | - | F2IVa | CHR 181 |
| 1993 | 280° | - | ||||||
| Aa-BC | 1834 | 54 | 171° | 108,4'' | 4,31 | 6,5 | F2IVa G0V | STF 28 |
| BC | 1826 | often | 327° | 1,3'' | 7,2 | 7,8 | G0V | STF1938 |
| 1994 | 10° | 2,1'' |
discoverer information:
| discoverer code | discoverer | reference |
| CHR 181 | - | - |
| STF 28 | Struve, F.G.W. | - |
| STF1938 | Struve, F.G.W. | - |
notes:
| note | Mu (1) Boo. A is a long-period spectroscopic binary. BC: Mu (2) Boo. P = 246yr., a = 1.40", motion retrograde. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 15h 20,7min | DEC: +37° 42' |
magnitudes, spectral classes, orbital elements:
| author: | P. Baize |
| date of observation: | 1951 |
| magnitude of component A: | 6,98 |
| magnitude of component B: | 6,98 |
| spectral class component B: | G1V |
| spectral class component B: | G1V |
| period [y]: | 260,1 |
| semi-major axis [arcsec]: | 1,463 |
| inclination [deg]: | 135,4 |
| node [deg]: | 174,9 |
| equinox of node: | 1900 |
| eccentricity: | 0,59 |
| time of periastron passage: | 1865 |
| dates of ephemeris: | 1950-2020 |
| grade: | reliable |
| reference: | J. Observateurs 35, 81; 1952. |
| notes | Star A (Mu Boo, mag. 4.32, 108", F0V) is physical and is a spectroscopic binary, P = 298.75 d. |