HR 7598
catalogues and names
| catalogues and names | HR 7598, HD 188385, SAO 125221, BD +6 4351, WDS 19547+0708 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 19h 54min 40.3sec | DEC: +7° 8' 25'' | ||
| position (B1900) | RA: 19h 49min 47.1sec | DEC: +6° 52' 42'' | ||
| proper motion (J2000) | RA: 0.034 arcsec/a | DEC: -0.003 arcsec/a | ||
| radial velocity | -16 km/s | |||
| galactic coordinates | longitude: 46.7° | latitude: -10.6° | ||
magnitude
| visual magnitude | 6.15 (V on UBV Johnson system) |
spectral / color information
| spectral class | A2V |
| B-V-magnitude | 0.03 |
| U-B-magnitude | 0.04 |
double/multiple star system information
| separation | 13.8 arcsec |
| mag difference (of double or brightest multiple) | 6.4 |
| note (category: double and multiple data): | Optical. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 19h 54min 40.191sec | DEC: +7° 8' 25.27'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: 0.0018 arcsec/a | DEC: 0.002 arcsec/a | source: 25 | |
| radial velocity | -16 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 46.7° | latitude: -10.6° | ||
magnitude:
| visual | 6.15 (observed) | source: 25 |
| photovisual | 6 | source: 2 |
| photographic | 6.3 | source: 16 |
spectral information:
| spectral class | A0 | source: 96 | |
| Morgan-Keenan | A2V | source: 25 | |
| B-magnitude | 6.18 ±0.05 | B-V-magnitude | 0.03 |
| U-magnitude | 6.22 ±0.05 | U-B-magnitude | 0.04 |
double/multiple star system information:
| separation between brightest and second brightest component | 13.8 arcsec |
| magnitude difference between brightest and second brightest component | 5.8 |
| position angle | 306 ° |
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 52min 13.651sec | DEC: +7° 0' 28.87'' | ±0.06 arcsec |
| position (J2000) | RA: 19h 54min 40.25sec | DEC: +7° 8' 24.79'' | |
| proper motion B1950 (FK4) | RA: 0.0021 arcsec/a | DEC: -0.001 arcsec/a | ±0.01 arcsec/a in RA ±0.012 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0023 arcsec/a | DEC: -0.003 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A0 |
| 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: 27567 |
| Durchmusterung | BD+06 4351 |
| Boss General Catalogue | 27567 |
| Henry Draper Catalogue | 188385 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 19h 54.7min | DEC: +7° 8' |
| proper motion (J2000) | RA: 0.027 arcsec/a | DEC: 0.002 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 |
| - | 1878 | 9 | 316° | 12.3'' | 6.15 | 12 | A2V | BU 659 |
| 1958 | 306° | 13.8'' |
discoverer information:
| discoverer code | discoverer | reference |
| BU 659 | Burnham, S.W. | - |