Mufrid
catalogues and names
| catalogues and names | Mufrid, h Boo, NSV 19993, 8 Boo, HR 5235, HD 121370, SAO 100766, BD +19 2725, FK5: 513, WDS 13547+1824A |
| other names | Muphrid, Mufride, Muphride |
| constellation | Bootes |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Mufrid; Muphrid; Mufride; Muphride. |
position, motion, parallax:
| position (J2000) | RA: 13h 54min 41.1sec | DEC: +18° 23' 52'' | ||
| position (B1900) | RA: 13h 49min 55.3sec | DEC: +18° 53' 56'' | ||
| proper motion (J2000) | RA: -0.063 arcsec/a | DEC: -0.358 arcsec/a | ||
| radial velocity | 0 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible |
|||
| rotational velocity | 13 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.108 arcsec | |||
| galactic coordinates | longitude: 5.3° | latitude: 73.03° | ||
magnitude
| visual magnitude | 2.68 (V on UBV Johnson system) |
spectral / color information
| spectral class | G0IV |
| B-V-magnitude | 0.58 |
| U-B-magnitude | 0.2 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
double/multiple star system information
| separation | 112.6 arcsec |
| mag difference (of double or brightest multiple) | 6 |
| note | Worley (1978) update of the IDS |
| note (category: double and multiple data): | A* 2.68 G0IV. Visual component 8.8v at 113" optical. |
| note (category: spectroscopic binaries): | 494.173d, K 8.4k/s, V0 +1.0k/s, asini 55.1. Unresolved by speckle interferometry. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 13h 54min 41.074sec | DEC: +18° 23' 51.72'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0044 arcsec/a | DEC: -0.358 arcsec/a | source: 25 | |
| radial velocity | 0 km/s | source: 25 | ||
| trigonometric parallax | 0.108 arcsec | ±0.011 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 5.31° | latitude: 73.03° | ||
magnitude:
| visual | 2.68 (observed) | source: 25 |
| photovisual | 2.8 | source: 2 |
spectral information:
| spectral class | G0 | source: 96 | |
| Morgan-Keenan | G0IV | source: 25 | |
| B-magnitude | 3.26 ±0.05 | B-V-magnitude | 0.58 |
| U-magnitude | 3.46 ±0.05 | U-B-magnitude | 0.2 |
double/multiple star system information:
| separation between brightest and second brightest component | 112.6 arcsec |
| magnitude difference between brightest and second brightest component | 6.1 |
| position angle | 103 ° |
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: 13h 52min 18.168sec | DEC: +18° 38' 51.35'' | ±0.003 arcsec |
| position (J2000) | RA: 13h 54min 41.076sec | DEC: +18° 23' 51.72'' | |
| proper motion B1950 (FK4) | RA: -0.0045 arcsec/a | DEC: -0.363 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0044 arcsec/a | DEC: -0.358 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 2.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | G0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 513 |
| Durchmusterung | BD+19 2725 |
| Boss General Catalogue | 18805 |
| Henry Draper Catalogue | 121370 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 13h 54.7min | DEC: +18° 24' |
| proper motion (J2000) | RA: -0.063 arcsec/a | DEC: -0.358 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 |
| - | 1822 | 13 | 120° | 126.2'' | 2.68 | 8.8 | G0IV | SHJ 169 |
| 1925 | 103° | 112.6'' |
discoverer information:
| discoverer code | discoverer | reference |
| SHJ 169 | South & Herschel | - |
notes:
| note | Eta Boo. A is a long-period spectroscopic binary. B is BD+19@2726. Proper motion of B -040 +017. |