HR 104
| catalogues and names |
| The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) |
| SKY2000 - Master Star Catalog |
| Smithsonian Astrophysical Observatory Star Catalog |
catalogues and names
| catalogues and names | HR 104, HD 2421, SAO 36390, BD +43 92, FK5: 2027 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 0h 28min 13.7sec | DEC: +44° 23' 40'' | ||
| position (B1900) | RA: 0h 22min 51.1sec | DEC: +43° 50' 29'' | ||
| proper motion (J2000) | RA: 0.089 arcsec/a | DEC: -0.016 arcsec/a | ||
| radial velocity | 2 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible |
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| rotational velocity | 36 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.013 arcsec | |||
| galactic coordinates | longitude: 118.57° | latitude: -18.28° | ||
magnitude
| visual magnitude | 5.17 (V on UBV Johnson system) |
spectral / color information
| spectral class | A2V s |
| B-V-magnitude | 0.03 |
| U-B-magnitude | -0.01 |
double/multiple star system information
| note (category: spectroscopic binaries): | 3.9558d, K 41.7k/s, V0 +2.0k/s, asini 2.24. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 0h 28min 13.665sec | DEC: +44° 23' 39.86'' | ±0.22 arcsec | source: 15 |
| proper motion (J2000) | RA: 0.0083 arcsec/a | DEC: -0.016 arcsec/a | source: 25 | |
| radial velocity | 2 km/s | source: 25 | ||
| trigonometric parallax | 0.013 arcsec | ±0.001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 118.57° | latitude: -18.28° | ||
magnitude:
| visual | 5.17 (observed) | source: 25 |
| photovisual | 5.2 | source: 2 |
spectral information:
| spectral class | A2 | source: 96 | |
| Morgan-Keenan | A2Vs | source: 25 | |
| B-magnitude | 5.2 ±0.05 | B-V-magnitude | 0.03 |
| U-magnitude | 5.19 ±0.05 | U-B-magnitude | -0.01 |
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 | |
| 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: 0h 25min 31.928sec | DEC: +44° 7' 5.6'' | ±0.024 arcsec |
| position (J2000) | RA: 0h 28min 13.755sec | DEC: +44° 23' 40.18'' | |
| proper motion B1950 (FK4) | RA: 0.0088 arcsec/a | DEC: -0.006 arcsec/a | ±0.005 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.009 arcsec/a | DEC: -0.011 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.2 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A2 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 546 |
| Durchmusterung | BD+43 92 |
| Boss General Catalogue | 546 |
| Henry Draper Catalogue | 2421 |