HR 8025
catalogues and names
| catalogues and names | HR 8025, HD 199611, SAO 33004, BD +50 3233, FK5: 3670, WDS 20564+5044 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 20h 56min 25.5sec | DEC: +50° 43' 43'' | ||
| position (B1900) | RA: 20h 53min 15sec | DEC: +50° 20' 40'' | ||
| proper motion (J2000) | RA: 0.041 arcsec/a | DEC: -0.015 arcsec/a | ||
| radial velocity | -15 km/s note: spectroscopic binaries |
|||
| rotational velocity | 109 km/s (uncertain) (variable) | |||
| galactic coordinates | longitude: 90.1° | latitude: 3.49° | ||
magnitude
| visual magnitude | 5.81 (V on UBV Johnson system) |
spectral / color information
| spectral class | F0III |
| B-V-magnitude | 0.3 |
| U-B-magnitude | 0.04 |
| note (category: spectra): | Also classified F3Vw. |
double/multiple star system information
| separation | 7.2 arcsec |
| mag difference (of double or brightest multiple) | 7.7 |
| note (category: double and multiple data): | Binary. |
| note (category: spectroscopic binaries): | ADS 14460A. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 20h 56min 25.454sec | DEC: +50° 43' 43.07'' | ±0.2 arcsec | source: 52 |
| proper motion (J2000) | RA: 0.0039 arcsec/a | DEC: -0.017 arcsec/a | source: 25 | |
| radial velocity | -15 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 90.1° | latitude: 3.49° | ||
magnitude:
| visual | 5.81 (observed) | source: 25 |
| photovisual | 5.8 | source: 2 |
| photographic | 6.1 | source: 16 |
spectral information:
| spectral class | F0 | source: 96 | |
| Morgan-Keenan | F0III | source: 25 | |
| B-magnitude | 6.11 ±0.05 | B-V-magnitude | 0.3 |
| U-magnitude | 6.15 ±0.05 | U-B-magnitude | 0.04 |
double/multiple star system information:
| separation between brightest and second brightest component | 7.2 arcsec |
| magnitude difference between brightest and second brightest component | 7.7 |
| position angle | 348 ° |
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 | |
| 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 | |
| 52 | PPMN-HP subset |
| PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H) | |
| 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: 20h 54min 50.14sec | DEC: +50° 32' 8.84'' | ±0.029 arcsec |
| position (J2000) | RA: 20h 56min 25.44sec | DEC: +50° 43' 42.79'' | |
| proper motion B1950 (FK4) | RA: 0.0033 arcsec/a | DEC: -0.017 arcsec/a | ±0.005 arcsec/a in RA ±0.005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0037 arcsec/a | DEC: -0.019 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | F0 |
| 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: 29243 |
| Durchmusterung | BD+50 3233 |
| Boss General Catalogue | 29243 |
| Henry Draper Catalogue | 199611 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 20h 56.4min | DEC: +50° 44' |
| proper motion (J2000) | RA: 0.041 arcsec/a | DEC: -0.015 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 |
| - | 1889 | 4 | 344° | 6.9'' | 5.81 | 13.5 | F0III | BU 1137 |
| 1934 | 348° | 7.2'' |
discoverer information:
| discoverer code | discoverer | reference |
| BU 1137 | Burnham, S.W. | - |
notes:
| note | A is a spectroscopic binary. |