HR 7456
catalogues and names
| catalogues and names | HR 7456, HD 185018, SAO 105045, BD +10 3984, WDS 19369+1116A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 19h 36min 52.5sec | DEC: +11° 16' 24'' | ||
| position (B1900) | RA: 19h 32min 9.1sec | DEC: +11° 3' 0'' | ||
| proper motion (J2000) | RA: 0.018 arcsec/a | DEC: 0.005 arcsec/a | ||
| radial velocity | -1 km/s | |||
| galactic coordinates | longitude: 48.18° | latitude: -4.75° | ||
magnitude
| visual magnitude | 5.98 (V on UBV Johnson system) |
spectral / color information
| spectral class | G0Ib |
| B-V-magnitude | 0.88 |
double/multiple star system information
| number of components of multiple star system | 5 |
| separation | 80 arcsec |
| mag difference (of double or brightest multiple) | 5.7 |
| component ID | AD |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 19h 36min 52.518sec | DEC: +11° 16' 22.86'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: 0.0016 arcsec/a | DEC: -0.009 arcsec/a | source: 25 | |
| radial velocity | -1 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 48.18° | latitude: -4.75° | ||
magnitude:
| visual | 5.98 (observed) | source: 25 |
| photovisual | 6.2 | source: 2 |
| photographic | 6.9 | source: 16 |
spectral information:
| spectral class | G5 | source: 96 | |
| Morgan-Keenan | G0Ib-II | source: 25 | |
| B-magnitude | 6.86 ±0.05 | B-V-magnitude | 0.88 |
double/multiple star system information:
| separation between brightest and second brightest component | 17 arcsec |
| magnitude difference between brightest and second brightest component | 8 |
| position angle | 57 ° |
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 | |
| 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 | |
| 17 | ACRS |
| Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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: 19h 34min 30.755sec | DEC: +11° 9' 37.44'' | ±0.054 arcsec |
| position (J2000) | RA: 19h 36min 52.487sec | DEC: +11° 16' 24.11'' | |
| proper motion B1950 (FK4) | RA: 0.0011 arcsec/a | DEC: 0.007 arcsec/a | ±0.009 arcsec/a in RA ±0.007 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0012 arcsec/a | DEC: 0.005 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6.2 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | G5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 27120 |
| Durchmusterung | BD+10 3984 |
| Boss General Catalogue | 27120 |
| Henry Draper Catalogue | 185018 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 19h 36.9min | DEC: +11° 16' |
| proper motion (J2000) | RA: 0.024 arcsec/a | DEC: -0.009 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 |
| AB | 1910 | 3 | 57° | 17'' | 5.98 | 14 | G0I-II | J 133 |
| AC | 1910 | 5 | 315° | 20.2'' | 5.98 | 12.5 | - | J 133 |
| Bb | 1934 | 1 | 25° | 5'' | 13.5 | 14.8 | - | KUI 92 |
discoverer information:
| discoverer code | discoverer | reference |
| J 133 | Jonckheere, R. | - |
| KUI 92 | Kuiper, G.P. | - |